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Wikipedia:WikiProject Colorado/Counties

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The following Colorado county data is for use by WikiProject Colorado.

Colorado counties

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The 64 Counties of the State of Colorado
County[1] Date created[1] County seat[1] Population[2] 2020 population density[a] 2020 Area[b] Elevation[c] County website CDOT map Coordinates[d]
2021 rank 2021 estimate[e] Change 2020 Census Change 2010 Census Change 2000 Census Land Water Total Max[f] Min[g]
Adams County November 15, 1902 Brighton 5 522,140 +0.49% 519,572 +17.66% 441,603 +26.87% 348,076 445/sq mi
172/km2   		1,166.7 sq mi
3,021.8 km2   		16.9 sq mi
43.7 km2   		1,183.6 sq mi
3,065.5 km2   		5,668 ft
1728 m 		4,432 ft
1351 m 		Adams County map 39°52′27″N 104°20′16″W / 39.8741789°N 104.3378450°W / 39.8741789; -104.3378450 (Adams County, Colorado)
Alamosa County March 08, 1913 Alamosa 31 16,547 +1.04% 16,376 +6.03% 15,445 +3.21% 14,965 22.66/sq mi
8.75/km2   		722.6 sq mi
1,871.6 km2   		0.6 sq mi
1.7 km2   		723.2 sq mi
1,873.3 km2   		14,351 ft
4374 m 		6,387 ft
1947 m 		Alamosa County map 37°34′22″N 105°47′18″W / 37.5728342°N 105.7884000°W / 37.5728342; -105.7884000 (Alamosa County, Colorado)
Arapahoe County November 01, 1861 Littleton 3 654,900 −0.03% 655,070 +14.52% 572,003 +17.01% 488,829 821/sq mi
317/km2   		797.9 sq mi
2,066.4 km2   		7.6 sq mi
19.8 km2   		805.5 sq mi
2,086.2 km2   		6,218 ft
1895 m 		4,730 ft
1442 m 		Arapahoe County map 39°39′01″N 104°20′22″W / 39.6503229°N 104.3393175°W / 39.6503229; -104.3393175 (Arapahoe County, Colorado)
Archuleta County April 14, 1885 Pagosa Springs 34 13,790 +3.23% 13,359 +10.55% 12,084 +22.13% 9,894 9.89/sq mi
3.82/km2   		1,350.1 sq mi
3,496.7 km2   		5.3 sq mi
13.7 km2   		1,355.4 sq mi
3,510.4 km2   		13,308 ft
4056 m 		6,085 ft
1855 m 		Archuleta County map 37°11′37″N 107°02′53″W / 37.1937061°N 107.0481382°W / 37.1937061; -107.0481382 (Archuleta County, Colorado)
Baca County April 16, 1889 Springfield 56 3,514 +0.23% 3,506 −7.44% 3,788 −16.14% 4,517 1.37/sq mi
0.53/km2   		2,555.0 sq mi
6,617.4 km2   		2.4 sq mi
6.1 km2   		2,557.4 sq mi
6,623.5 km2   		5,293 ft
1613 m 		3,458 ft
1054 m 		Baca County map 37°19′09″N 102°33′38″W / 37.3191050°N 102.5604802°W / 37.3191050; -102.5604802 (Baca County, Colorado)
Bent County February 11, 1870 Las Animas 49 5,759 +1.93% 5,650 −13.06% 6,499 +8.39% 5,996 3.73/sq mi
1.44/km2   		1,512.8 sq mi
3,918.3 km2   		28.2 sq mi
73.1 km2   		1,541.0 sq mi
3,991.4 km2   		4,857 ft
1481 m 		3,671 ft
1119 m 		Bent County map 37°57′17″N 103°04′18″W / 37.9548094°N 103.0717149°W / 37.9548094; -103.0717149 (Bent County, Colorado)
Boulder County November 01, 1861 Boulder 9 329,543 −0.37% 330,758 +12.29% 294,567 +9.19% 269,784 455/sq mi
176/km2   		726.4 sq mi
1,881.3 km2   		14.1 sq mi
36.5 km2   		740.5 sq mi
1,917.8 km2   		14,259 ft
4346 m 		4,717 ft
1438 m 		Boulder County map 40°05′33″N 105°21′28″W / 40.0924576°N 105.3577120°W / 40.0924576; -105.3577120 (Boulder County, Colorado)
City and County of Broomfield November 15, 2001 Broomfield 12 75,325 +1.64% 74,112 +32.61% 55,889 +42.57% 39,202 2,248/sq mi
868/km2   		33.0 sq mi
85.4 km2   		0.6 sq mi
1.5 km2   		33.6 sq mi
86.9 km2   		5,848 ft
1783 m 		4,691 ft
1430 m 		City and County of Broomfield map 39°57′15″N 105°03′10″W / 39.9541268°N 105.0527103°W / 39.9541268; -105.0527103 (City and County of Broomfield, Colorado)
Chaffee County February 10, 1879 Salida 26 20,074 +3.07% 19,476 +9.36% 17,809 +9.59% 16,250 19.22/sq mi
7.42/km2   		1,013.4 sq mi
2,624.7 km2   		1.5 sq mi
4.0 km2   		1,014.9 sq mi
2,628.7 km2   		14,427 ft
4397 m 		5,298 ft
1615 m 		Chaffee County map 38°44′48″N 106°11′38″W / 38.7465981°N 106.1937627°W / 38.7465981; -106.1937627 (Chaffee County, Colorado)
Cheyenne County March 25, 1889 Cheyenne Wells 59 1,707 −2.35% 1,748 −4.79% 1,836 −17.63% 2,229 0.98/sq mi
0.38/km2   		1,778.3 sq mi
4,605.7 km2   		3.2 sq mi
8.2 km2   		1,781.5 sq mi
4,613.9 km2   		5,257 ft
1602 m 		3,740 ft
1140 m 		Cheyenne County map 38°49′41″N 102°36′12″W / 38.8281780°N 102.6034141°W / 38.8281780; -102.6034141 (Cheyenne County, Colorado)
Clear Creek County November 01, 1861 Georgetown 39 9,446 +0.52% 9,397 +3.40% 9,088 −1.89% 9,263 23.79/sq mi
9.18/km2   		395.1 sq mi
1,023.2 km2   		1.3 sq mi
3.3 km2   		396.4 sq mi
1,026.5 km2   		14,278 ft
4352 m 		5,075 ft
1547 m 		Clear Creek County map 39°41′21″N 105°38′40″W / 39.6890622°N 105.6443074°W / 39.6890622; -105.6443074 (Clear Creek County, Colorado)
Conejos County November 01, 1861 Conejos 41 7,612 +2.02% 7,461 −9.63% 8,256 −1.71% 8,400 5.80/sq mi
2.24/km2   		1,287.4 sq mi
3,334.4 km2   		3.6 sq mi
9.2 km2   		1,291.0 sq mi
3,343.6 km2   		13,179 ft
4017 m 		7,404 ft
2257 m 		Conejos County map 37°12′03″N 106°11′29″W / 37.2007929°N 106.1914806°W / 37.2007929; -106.1914806 (Conejos County, Colorado)
Costilla County November 01, 1861 San Luis 55 3,625 +3.60% 3,499 −0.71% 3,524 −3.74% 3,661 2.85/sq mi
1.10/km2   		1,227.6 sq mi
3,179.5 km2   		3.4 sq mi
8.8 km2   		1,231.0 sq mi
3,188.3 km2   		14,351 ft
4374 m 		7,375 ft
2248 m 		Costilla County map 37°16′40″N 105°25′42″W / 37.2776823°N 105.4283908°W / 37.2776823; -105.4283908 (Costilla County, Colorado)
Crowley County May 29, 1911 Ordway 47 6,012 +1.52% 5,922 +1.70% 5,823 +5.60% 5,514 7.52/sq mi
2.90/km2   		787.4 sq mi
2,039.4 km2   		12.9 sq mi
33.4 km2   		800.3 sq mi
2,072.8 km2   		5,228 ft
1593 m 		3,966 ft
1209 m 		Crowley County map 38°19′36″N 103°47′05″W / 38.3265917°N 103.7848382°W / 38.3265917; -103.7848382 (Crowley County, Colorado)
Custer County March 09, 1877 Westcliffe 51 5,045 +7.25% 4,704 +10.55% 4,255 +21.29% 3,508 6.37/sq mi
2.46/km2   		738.6 sq mi
1,913.0 km2   		1.3 sq mi
3.4 km2   		739.9 sq mi
1,916.4 km2   		14,246 ft
4342 m 		4,547 ft
1386 m 		Custer County map 38°06′31″N 105°22′03″W / 38.1086939°N 105.3674060°W / 38.1086939; -105.3674060 (Custer County, Colorado)
Delta County February 11, 1883 Delta 18 31,661 +1.49% 31,196 +0.79% 30,952 +11.24% 27,824 27.3/sq mi
10.5/km2   		1,142.1 sq mi
2,958.1 km2   		6.5 sq mi
16.8 km2   		1,148.6 sq mi
2,974.9 km2   		11,396 ft
3474 m 		4,763 ft
1452 m 		Delta County map 38°51′41″N 107°51′48″W / 38.8613998°N 107.8631974°W / 38.8613998; -107.8631974 (Delta County, Colorado)
City and County of Denver December 01, 1902 Denver 2 711,463 −0.57% 715,522 +19.22% 600,158 +8.37% 553,805 4,674/sq mi
1,805/km2   		153.1 sq mi
396.5 km2   		1.7 sq mi
4.3 km2   		154.8 sq mi
400.8 km2   		5,688 ft
1734 m 		4,803 ft
1464 m 		City and County of Denver map 39°45′43″N 104°52′34″W / 39.7619809°N 104.8760040°W / 39.7619809; -104.8760040 (City and County of Denver, Colorado)
Dolores County March 04, 1881 Dove Creek 57 2,397 +3.05% 2,326 +12.69% 2,064 +11.93% 1,844 2.18/sq mi
0.84/km2   		1,067.2 sq mi
2,764.0 km2   		1.0 sq mi
2.7 km2   		1,068.2 sq mi
2,766.7 km2   		14,252 ft
4344 m 		4,911 ft
1497 m 		Dolores County map 37°45′07″N 108°31′02″W / 37.7519785°N 108.5173060°W / 37.7519785; -108.5173060 (Dolores County, Colorado)
Douglas County November 01, 1861 Castle Rock 6 368,990 +3.08% 357,978 +25.40% 285,465 +62.44% 175,732 426/sq mi
164/km2   		840.2 sq mi
2,176.2 km2   		2.6 sq mi
6.8 km2   		842.8 sq mi
2,183.0 km2   		9,836 ft
2998 m 		5,242 ft
1598 m 		Douglas County map 39°19′47″N 104°55′47″W / 39.3296108°N 104.9297053°W / 39.3296108; -104.9297053 (Douglas County, Colorado)
Eagle County February 11, 1883 Eagle 15 55,727 −0.01% 55,731 +6.77% 52,197 +25.40% 41,623 33.1/sq mi
12.8/km2   		1,684.5 sq mi
4,362.8 km2   		7.3 sq mi
19.0 km2   		1,691.8 sq mi
4,381.8 km2   		14,011 ft
4271 m 		6,220 ft
1896 m 		Eagle County map 39°37′40″N 106°41′43″W / 39.6277366°N 106.6951442°W / 39.6277366; -106.6951442 (Eagle County, Colorado)
El Paso County November 01, 1861 Colorado Springs 1 737,867 +1.02% 730,395 +17.38% 622,263 +20.38% 516,934 343/sq mi
133/km2   		2,126.4 sq mi
5,507.4 km2   		2.7 sq mi
7.1 km2   		2,129.1 sq mi
5,514.5 km2   		14,115 ft
4302 m 		5,055 ft
1541 m 		El Paso County map 38°49′55″N 104°31′31″W / 38.8320014°N 104.5253965°W / 38.8320014; -104.5253965 (El Paso County, Colorado)
Elbert County February 02, 1874 Kiowa 21 27,128 +4.09% 26,062 +12.89% 23,086 +16.27% 19,855 14.08/sq mi
5.44/km2   		1,850.8 sq mi
4,793.6 km2   		0.2 sq mi
0.4 km2   		1,851.0 sq mi
4,794.0 km2   		7,374 ft
2248 m 		4,580 ft
1396 m 		Elbert County map 39°17′11″N 104°08′08″W / 39.2864464°N 104.1354658°W / 39.2864464; -104.1354658 (Elbert County, Colorado)
Fremont County November 01, 1861 Cañon City 16 49,661 +1.48% 48,939 +4.52% 46,824 +1.48% 46,140 31.9/sq mi
12.3/km2   		1,533.9 sq mi
3,972.7 km2   		0.9 sq mi
2.2 km2   		1,534.8 sq mi
3,974.9 km2   		13,110 ft
3996 m 		4,573 ft
1394 m 		Fremont County map 38°28′24″N 105°26′22″W / 38.4732142°N 105.4394323°W / 38.4732142; -105.4394323 (Fremont County, Colorado)
Garfield County February 10, 1883 Glenwood Springs 13 62,161 +0.77% 61,685 +9.39% 56,389 +28.78% 43,786 20.93/sq mi
8.08/km2   		2,947.4 sq mi
7,633.8 km2   		8.4 sq mi
21.7 km2   		2,955.8 sq mi
7,655.5 km2   		12,361 ft
3768 m 		4,471 ft
1363 m 		Garfield County map 39°36′01″N 107°54′19″W / 39.6003285°N 107.9052109°W / 39.6003285; -107.9052109 (Garfield County, Colorado)
Gilpin County November 01, 1861 Central City 48 5,873 +1.12% 5,808 +6.75% 5,441 +14.64% 4,746 38.7/sq mi
14.9/km2   		150.0 sq mi
388.6 km2   		0.4 sq mi
0.9 km2   		150.4 sq mi
389.5 km2   		13,300 ft
4054 m 		4,983 ft
1519 m 		Gilpin County map 39°51′27″N 105°31′21″W / 39.8575395°N 105.5225847°W / 39.8575395; -105.5225847 (Gilpin County, Colorado)
Grand County February 02, 1874 Hot Sulphur Springs 32 15,860 +0.91% 15,717 +5.89% 14,843 +19.38% 12,433 8.51/sq mi
3.29/km2   		1,846.4 sq mi
4,782.3 km2   		23.1 sq mi
59.9 km2   		1,869.5 sq mi
4,842.2 km2   		13,559 ft
4133 m 		6,040 ft
1841 m 		Grand County map 40°06′09″N 106°07′05″W / 40.1025426°N 106.1181476°W / 40.1025426; -106.1181476 (Grand County, Colorado)
Gunnison County March 09, 1877 Gunnison 30 17,281 +2.15% 16,918 +10.40% 15,324 +9.46% 14,000 5.22/sq mi
2.02/km2   		3,239.1 sq mi
8,389.3 km2   		20.5 sq mi
53.1 km2   		3,259.6 sq mi
8,442.4 km2   		14,279 ft
4352 m 		7,178 ft
2188 m 		Gunnison County map 38°39′59″N 107°01′55″W / 38.6663669°N 107.0318806°W / 38.6663669; -107.0318806 (Gunnison County, Colorado)
Hinsdale County February 10, 1874 Lake City 63 781 −0.89% 788 −6.52% 843 +6.44% 792 0.71/sq mi
0.27/km2   		1,117.2 sq mi
2,893.6 km2   		5.9 sq mi
15.3 km2   		1,123.1 sq mi
2,908.9 km2   		14,321 ft
4365 m 		7,299 ft
2225 m 		Hinsdale County map 37°49′15″N 107°18′01″W / 37.8208029°N 107.3003634°W / 37.8208029; -107.3003634 (Hinsdale County, Colorado)
Huerfano County November 01, 1861 Walsenburg 44 6,920 +1.47% 6,820 +1.62% 6,711 −14.61% 7,859 4.29/sq mi
1.66/km2   		1,591.0 sq mi
4,120.8 km2   		2.2 sq mi
5.8 km2   		1,593.2 sq mi
4,126.6 km2   		14,326 ft
4366 m 		4,445 ft
1355 m 		Huerfano County map 37°41′05″N 104°57′38″W / 37.6846648°N 104.9605114°W / 37.6846648; -104.9605114 (Huerfano County, Colorado)
Jackson County May 05, 1909 Walden 61 1,363 −1.16% 1,379 −1.08% 1,394 −11.60% 1,577 0.85/sq mi
0.33/km2   		1,613.7 sq mi
4,179.5 km2   		7.2 sq mi
18.8 km2   		1,620.9 sq mi
4,198.3 km2   		12,954 ft
3948 m 		4,865 ft
1483 m 		Jackson County map 40°39′58″N 106°20′32″W / 40.6661359°N 106.3423570°W / 40.6661359; -106.3423570 (Jackson County, Colorado)
Jefferson County November 01, 1861 Golden 4 579,581 −0.57% 582,910 +9.05% 534,543 +1.73% 525,449 763/sq mi
294/km2   		764.4 sq mi
1,979.7 km2   		9.7 sq mi
25.1 km2   		774.1 sq mi
2,004.8 km2   		11,589 ft
3532 m 		4,986 ft
1520 m 		Jefferson County map 39°35′09″N 105°15′02″W / 39.5858881°N 105.2506412°W / 39.5858881; -105.2506412 (Jefferson County, Colorado)
Kiowa County April 11, 1889 Eads 60 1,452 +0.41% 1,446 +3.43% 1,398 −13.81% 1,622 0.82/sq mi
0.32/km2   		1,767.8 sq mi
4,578.6 km2   		18.2 sq mi
47.0 km2   		1,786.0 sq mi
4,625.6 km2   		4,697 ft
1432 m 		3,687 ft
1124 m 		Kiowa County map 38°26′00″N 102°44′26″W / 38.4332694°N 102.7404800°W / 38.4332694; -102.7404800 (Kiowa County, Colorado)
Kit Carson County April 11, 1889 Burlington 43 6,950 −1.93% 7,087 −14.30% 8,270 +3.21% 8,013 3.28/sq mi
1.27/km2   		2,160.8 sq mi
5,596.5 km2   		0.9 sq mi
2.3 km2   		2,161.7 sq mi
5,598.8 km2   		5,297 ft
1615 m 		3,523 ft
1074 m 		Kit Carson County map 39°18′20″N 102°36′10″W / 39.3055557°N 102.6029123°W / 39.3055557; -102.6029123 (Kit Carson County, Colorado)
La Plata County February 10, 1874 Durango 14 56,250 +1.10% 55,638 +8.38% 51,334 +16.78% 43,957 32.9/sq mi
12.7/km2   		1,689.7 sq mi
4,376.3 km2   		9.9 sq mi
25.6 km2   		1,699.6 sq mi
4,401.9 km2   		14,093 ft
4296 m 		4,268 ft
1301 m 		La Plata County map 37°17′11″N 107°50′37″W / 37.2863619°N 107.8435620°W / 37.2863619; -107.8435620 (La Plata County, Colorado)
Lake County November 01, 1861 Leadville 42 7,407 −0.39% 7,436 +1.72% 7,310 −6.45% 7,814 19.73/sq mi
7.62/km2   		376.9 sq mi
976.2 km2   		7.0 sq mi
18.1 km2   		383.9 sq mi
994.3 km2   		14,440 ft
4401 m 		8,720 ft
2658 m 		Lake County map 39°12′08″N 106°20′42″W / 39.2023129°N 106.3449111°W / 39.2023129; -106.3449111 (Lake County, Colorado)
Larimer County November 01, 1861 Fort Collins 7 362,533 +0.97% 359,066 +19.84% 299,630 +19.14% 251,494 138.3/sq mi
53.4/km2   		2,595.8 sq mi
6,723.0 km2   		38.2 sq mi
99.0 km2   		2,634.0 sq mi
6,822.0 km2   		13,573 ft
4137 m 		4,557 ft
1389 m 		Larimer County map 40°39′58″N 105°27′39″W / 40.6661903°N 105.4607444°W / 40.6661903; -105.4607444 (Larimer County, Colorado)
Las Animas County February 09, 1866 Trinidad 33 14,633 +0.54% 14,555 −6.14% 15,507 +1.94% 15,212 3.05/sq mi
1.18/km2   		4,772.9 sq mi
12,361.9 km2   		2.7 sq mi
6.9 km2   		4,775.6 sq mi
12,368.8 km2   		13,631 ft
4155 m 		4,317 ft
1316 m 		Las Animas County map 37°19′00″N 104°02′21″W / 37.3166220°N 104.0391104°W / 37.3166220; -104.0391104 (Las Animas County, Colorado)
Lincoln County April 11, 1889 Hugo 50 5,688 +0.23% 5,675 +3.80% 5,467 −10.22% 6,089 2.20/sq mi
0.85/km2   		2,577.7 sq mi
6,676.2 km2   		8.8 sq mi
22.8 km2   		2,586.5 sq mi
6,699.0 km2   		5,973 ft
1821 m 		3,923 ft
1196 m 		Lincoln County map 38°59′13″N 103°30′53″W / 38.9869846°N 103.5146043°W / 38.9869846; -103.5146043 (Lincoln County, Colorado)
Logan County February 25, 1887 Sterling 25 21,487 −0.19% 21,528 −5.20% 22,709 +10.42% 20,566 11.71/sq mi
4.52/km2   		1,838.6 sq mi
4,761.9 km2   		6.3 sq mi
16.4 km2   		1,844.9 sq mi
4,778.3 km2   		4,947 ft
1508 m 		3,428 ft
1045 m 		Logan County map 40°43′29″N 103°06′36″W / 40.7245834°N 103.1100639°W / 40.7245834; -103.1100639 (Logan County, Colorado)
Mesa County February 14, 1883 Grand Junction 11 157,335 +1.05% 155,703 +6.12% 146,723 +25.47% 116,939 46.8/sq mi
18.1/km2   		3,328.7 sq mi
8,621.3 km2   		12.4 sq mi
32.0 km2   		3,341.1 sq mi
8,653.3 km2   		11,236 ft
3425 m 		4,337 ft
1322 m 		Mesa County map 39°01′05″N 108°28′04″W / 39.0181664°N 108.4677131°W / 39.0181664; -108.4677131 (Mesa County, Colorado)
Mineral County March 27, 1893 Creede 62 924 +6.82% 865 +21.49% 712 −14.32% 831 0.99/sq mi
0.38/km2   		875.8 sq mi
2,268.2 km2   		2.0 sq mi
5.2 km2   		877.8 sq mi
2,273.4 km2   		13,902 ft
4237 m 		7,549 ft
2301 m 		Mineral County map 37°40′07″N 106°55′27″W / 37.6687329°N 106.9240618°W / 37.6687329; -106.9240618 (Mineral County, Colorado)
Moffat County February 27, 1911 Craig 35 13,185 −0.80% 13,292 −3.65% 13,795 +4.68% 13,178 2.80/sq mi
1.08/km2   		4,743.2 sq mi
12,284.9 km2   		7.6 sq mi
19.8 km2   		4,750.8 sq mi
12,304.7 km2   		10,840 ft
3304 m 		4,993 ft
1522 m 		Moffat County map 40°37′07″N 108°12′27″W / 40.6187129°N 108.2074659°W / 40.6187129; -108.2074659 (Moffat County, Colorado)
Montezuma County April 16, 1889 Cortez 22 26,175 +1.26% 25,849 +1.23% 25,535 +7.19% 23,822 12.74/sq mi
4.92/km2   		2,029.3 sq mi
5,256.0 km2   		10.5 sq mi
27.2 km2   		2,039.8 sq mi
5,283.2 km2   		13,237 ft
4035 m 		4,639 ft
1414 m 		Montezuma County map 37°20′18″N 108°35′49″W / 37.3383013°N 108.5970269°W / 37.3383013; -108.5970269 (Montezuma County, Colorado)
Montrose County February 11, 1883 Montrose 17 43,168 +1.15% 42,679 +3.40% 41,276 +23.44% 33,438 19.05/sq mi
7.35/km2   		2,240.9 sq mi
5,804.0 km2   		1.9 sq mi
4.9 km2   		2,242.8 sq mi
5,808.9 km2   		11,453 ft
3491 m 		4,711 ft
1436 m 		Montrose County map 38°24′10″N 108°16′13″W / 38.4026876°N 108.2701893°W / 38.4026876; -108.2701893 (Montrose County, Colorado)
Morgan County February 19, 1889 Fort Morgan 20 29,008 −0.35% 29,111 +3.38% 28,159 +3.63% 27,172 22.73/sq mi
8.78/km2   		1,280.5 sq mi
3,316.4 km2   		13.4 sq mi
34.7 km2   		1,293.9 sq mi
3,351.1 km2   		4,937 ft
1505 m 		3,989 ft
1216 m 		Morgan County map 40°15′45″N 103°48′35″W / 40.2625815°N 103.8098295°W / 40.2625815; -103.8098295 (Morgan County, Colorado)
Otero County March 25, 1889 La Junta 27 18,594 −0.51% 18,690 −0.75% 18,831 −7.29% 20,311 14.81/sq mi
5.72/km2   		1,261.9 sq mi
3,268.4 km2   		7.8 sq mi
20.1 km2   		1,269.7 sq mi
3,288.5 km2   		5,273 ft
1607 m 		3,809 ft
1161 m 		Otero County map 37°54′09″N 103°43′00″W / 37.9025553°N 103.7165564°W / 37.9025553; -103.7165564 (Otero County, Colorado)
Ouray County January 18, 1877 Ouray 52 5,035 +3.30% 4,874 +9.87% 4,436 +18.39% 3,747 9.01/sq mi
3.48/km2   		540.7 sq mi
1,400.3 km2   		1.5 sq mi
4.0 km2   		542.2 sq mi
1,404.3 km2   		14,158 ft
4315 m 		6,315 ft
1925 m 		Ouray County map 38°09′19″N 107°46′09″W / 38.1553962°N 107.7691411°W / 38.1553962; -107.7691411 (Ouray County, Colorado)
Park County November 01, 1861 Fairplay 28 17,720 +1.90% 17,390 +7.31% 16,206 +11.62% 14,519 7.93/sq mi
3.06/km2   		2,193.5 sq mi
5,681.2 km2   		16.8 sq mi
43.5 km2   		2,210.3 sq mi
5,724.7 km2   		14,293 ft
4357 m 		5,826 ft
1776 m 		Park County map 39°07′08″N 105°43′02″W / 39.1187954°N 105.7171190°W / 39.1187954; -105.7171190 (Park County, Colorado)
Phillips County March 27, 1889 Holyoke 54 4,512 −0.40% 4,530 +1.98% 4,442 −0.96% 4,485 6.59/sq mi
2.54/km2   		687.9 sq mi
1,781.7 km2   		0.1 sq mi
0.3 km2   		688.0 sq mi
1,782.0 km2   		4,117 ft
1255 m 		3,582 ft
1092 m 		Phillips County map 40°35′38″N 102°21′27″W / 40.5939029°N 102.3575846°W / 40.5939029; -102.3575846 (Phillips County, Colorado)
Pitkin County February 23, 1881 Aspen 29 17,348 −0.06% 17,358 +1.22% 17,148 +15.17% 14,889 17.88/sq mi
6.90/km2   		970.7 sq mi
2,514.1 km2   		2.5 sq mi
6.5 km2   		973.2 sq mi
2,520.6 km2   		14,279 ft
4352 m 		5,695 ft
1736 m 		Pitkin County map 39°13′02″N 106°54′59″W / 39.2172422°N 106.9164625°W / 39.2172422; -106.9164625 (Pitkin County, Colorado)
Prowers County April 11, 1889 Lamar 36 11,996 −0.03% 11,999 −4.40% 12,551 −13.34% 14,483 7.32/sq mi
2.83/km2   		1,638.4 sq mi
4,243.5 km2   		5.9 sq mi
15.3 km2   		1,644.3 sq mi
4,258.8 km2   		4,713 ft
1437 m 		3,346 ft
1020 m 		Prowers County map 37°57′18″N 102°23′36″W / 37.9549242°N 102.3933533°W / 37.9549242; -102.3933533 (Prowers County, Colorado)
Pueblo County November 01, 1861 Pueblo 10 169,622 +0.87% 168,162 +5.72% 159,063 +12.42% 141,490 70.5/sq mi
27.2/km2   		2,386.6 sq mi
6,181.2 km2   		11.2 sq mi
28.9 km2   		2,397.8 sq mi
6,210.1 km2   		12,352 ft
3765 m 		4,291 ft
1308 m 		Pueblo County map 38°10′24″N 104°30′46″W / 38.1732322°N 104.5127765°W / 38.1732322; -104.5127765 (Pueblo County, Colorado)
Rio Blanco County March 25, 1889 Meeker 45 6,476 −0.81% 6,529 −2.06% 6,666 +11.25% 5,992 2.03/sq mi
0.78/km2   		3,221.0 sq mi
8,342.3 km2   		1.9 sq mi
4.9 km2   		3,222.9 sq mi
8,347.2 km2   		12,033 ft
3668 m 		5,062 ft
1543 m 		Rio Blanco County map 39°58′50″N 108°13′05″W / 39.9806725°N 108.2179271°W / 39.9806725; -108.2179271 (Rio Blanco County, Colorado)
Rio Grande County February 10, 1874 Del Norte 37 11,408 −1.14% 11,539 −3.70% 11,982 −3.57% 12,425 12.65/sq mi
4.89/km2   		912.0 sq mi
2,362.0 km2   		0.4 sq mi
1.0 km2   		912.4 sq mi
2,363.0 km2   		13,209 ft
4026 m 		7,467 ft
2276 m 		Rio Grande County map 37°34′57″N 106°22′59″W / 37.5825367°N 106.3831577°W / 37.5825367; -106.3831577 (Rio Grande County, Colorado)
Routt County January 29, 1877 Steamboat Springs 23 25,091 +1.06% 24,829 +5.61% 23,509 +19.46% 19,679 10.51/sq mi
4.06/km2   		2,362.0 sq mi
6,117.6 km2   		6.1 sq mi
15.8 km2   		2,368.1 sq mi
6,133.4 km2   		12,185 ft
3714 m 		6,266 ft
1910 m 		Routt County map 40°29′03″N 106°59′27″W / 40.4840785°N 106.9907816°W / 40.4840785; -106.9907816 (Routt County, Colorado)
Saguache County December 29, 1866 Saguache 46 6,471 +1.62% 6,368 +4.26% 6,108 +3.46% 5,904 2.01/sq mi
0.78/km2   		3,168.6 sq mi
8,206.5 km2   		1.7 sq mi
4.5 km2   		3,170.3 sq mi
8,211.0 km2   		14,300 ft
4359 m 		6,013 ft
1833 m 		Saguache County map 38°04′51″N 106°16′51″W / 38.0807339°N 106.2808607°W / 38.0807339; -106.2808607 (Saguache County, Colorado)
San Juan County January 31, 1876 Silverton 64 733 +3.97% 705 +0.86% 699 +25.27% 558 1.82/sq mi
0.70/km2   		387.5 sq mi
1,003.7 km2   		0.8 sq mi
2.0 km2   		388.3 sq mi
1,005.7 km2   		13,900 ft
4237 m 		7,683 ft
2342 m 		San Juan County map 37°45′50″N 107°40′34″W / 37.7640122°N 107.6762274°W / 37.7640122; -107.6762274 (San Juan County, Colorado)
San Miguel County March 02, 1883 Telluride 40 8,074 +0.02% 8,072 +9.69% 7,359 +11.62% 6,593 6.27/sq mi
2.42/km2   		1,286.7 sq mi
3,332.6 km2   		2.0 sq mi
5.2 km2   		1,288.7 sq mi
3,337.8 km2   		14,023 ft
4274 m 		5,308 ft
1618 m 		San Miguel County map 38°00′15″N 108°24′21″W / 38.0042019°N 108.4057022°W / 38.0042019; -108.4057022 (San Miguel County, Colorado)
Sedgwick County April 09, 1889 Julesburg 58 2,336 −2.83% 2,404 +1.05% 2,379 −13.40% 2,747 4.39/sq mi
1.69/km2   		548.0 sq mi
1,419.4 km2   		1.4 sq mi
3.5 km2   		549.4 sq mi
1,422.9 km2   		4,127 ft
1258 m 		3,477 ft
1060 m 		Sedgwick County map 40°52′33″N 102°21′06″W / 40.8759564°N 102.3517903°W / 40.8759564; -102.3517903 (Sedgwick County, Colorado)
Summit County November 01, 1861 Breckenridge 19 30,941 −0.37% 31,055 +10.93% 27,994 +18.82% 23,560 51.0/sq mi
19.7/km2   		608.3 sq mi
1,575.6 km2   		10.9 sq mi
28.3 km2   		619.2 sq mi
1,603.9 km2   		14,278 ft
4352 m 		7,460 ft
2274 m 		Summit County map 39°38′02″N 106°06′58″W / 39.6339611°N 106.1160413°W / 39.6339611; -106.1160413 (Summit County, Colorado)
Teller County March 23, 1899 Cripple Creek 24 24,926 +0.87% 24,710 +5.82% 23,350 +13.68% 20,541 44.4/sq mi
17.1/km2   		557.1 sq mi
1,442.8 km2   		1.9 sq mi
5.0 km2   		559.0 sq mi
1,447.8 km2   		13,065 ft
3982 m 		5,236 ft
1596 m 		Teller County map 38°52′56″N 105°09′42″W / 38.8821769°N 105.1617222°W / 38.8821769; -105.1617222 (Teller County, Colorado)
Washington County February 09, 1887 Akron 53 4,861 +0.91% 4,817 +0.06% 4,814 −2.19% 4,922 1.91/sq mi
0.74/km2   		2,518.1 sq mi
6,521.8 km2   		5.9 sq mi
15.2 km2   		2,524.0 sq mi
6,537.0 km2   		5,433 ft
1656 m 		3,910 ft
1192 m 		Washington County map 39°58′14″N 103°12′06″W / 39.9704267°N 103.2016452°W / 39.9704267; -103.2016452 (Washington County, Colorado)
Weld County November 01, 1861 Greeley 8 340,036 +3.36% 328,981 +30.12% 252,825 +39.86% 180,766 82.6/sq mi
31.9/km2   		3,984.9 sq mi
10,321.0 km2   		31.8 sq mi
82.4 km2   		4,016.7 sq mi
10,403.4 km2   		6,388 ft
1947 m 		3,959 ft
1207 m 		Weld County map 40°33′15″N 104°23′38″W / 40.5542451°N 104.3937513°W / 40.5542451; -104.3937513 (Weld County, Colorado)
Yuma County March 15, 1889 Wray 38 9,941 −0.47% 9,988 −0.55% 10,043 +2.00% 9,846 4.22/sq mi
1.63/km2   		2,364.4 sq mi
6,123.8 km2   		4.3 sq mi
11.1 km2   		2,368.7 sq mi
6,134.9 km2   		4,447 ft
1355 m 		3,317 ft
1011 m 		Yuma County map 40°00′08″N 102°25′27″W / 40.0022004°N 102.4242526°W / 40.0022004; -102.4242526 (Yuma County, Colorado)
State of Colorado August 01, 1876 Denver State 5,812,069 +0.66% 5,773,714 +14.80% 5,029,196 +16.92% 4,301,262 55.7/sq mi
21.5/km2   		103,641.9 sq mi
268,431.2 km2   		451.8 sq mi
1,170.1 km2   		104,093.7 sq mi
269,601.3 km2   		14,440 ft
4401 m 		3,317 ft
1011 m 		State of Colorado map 38°59′50″N 105°32′52″W / 38.9972°N 105.5478°W / 38.9972; -105.5478 (State of Colorado)

Notes

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  1. ^ The population density per land area at the 2020 Census.[2][3]
  2. ^ The area of the county as determined by the United States Census Bureau.[3]
  3. ^ Elevations include an adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88).
  4. ^ The centroid coordinates of the county as determined by the United States Census Bureau.[3]
  5. ^ United States Census Bureau estimates of county population as of July 1, 2021[4]
  6. ^ The maximum elevation in the county.[5] See the List of Colorado county high points.
  7. ^ The minimum elevation in the county. Only a few of these county low points have been verified.

References

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  1. ^ a b c "Colorado Counties". Colorado Department of Local Affairs. 2021. Retrieved November 13, 2021.
  2. ^ a b "QuickFacts for Colorado". United States Census Bureau. Retrieved September 19, 2022.
  3. ^ a b c "State of Colorado Counties - Current/TAB20 - Data as of January 1, 2020". United States Census Bureau. January 1, 2020. Retrieved November 13, 2021.
  4. ^ "Annual Estimates of the Resident Population for Counties in Colorado: April 1, 2020 to July 1, 2021 (CO-EST2021-POP-08)". United States Census Bureau, United States Department of Commerce. March 2022. Retrieved September 29, 2022.
  5. ^ "Colorado County High Points". peakbagger.com. Retrieved November 13, 2021.
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