List of boroughs of Oslo

The 15 boroughs of Oslo were created on 1 January 2004. They each have an elected local council with limited responsibilities.

Borough	Residents	Area	Number
Alna	49 801	13,7 km2	12
Bjerke	33 422	7,7 km2	9
Frogner	59 269	8,3 km2	5
Gamle Oslo	58 671	7,5 km2	1
Grorud	27 707	8,2 km2	10
Grünerløkka	62 423	4,8 km2	2
Nordre Aker	52 327	13,6 km2	8
Nordstrand	52 459	16,9 km2	14
Sagene	45 089	3,1 km2	3
St. Hanshaugen	38 945	3,6 km2	4
Stovner	33 316	8,2 km2	11
Søndre Nordstrand	39 066	18,4 km2	15
Ullern	34 596	9,4 km2	6
Vestre Aker	50 157	16,6 km2	7
Østensjø	50 806	12,2 km2	13

In addition is Marka (1610 residents), that is administered by several boroughs; and Sentrum (1471 residents, 1.8 km²) that is partially administered by St. Hanshaugen, and in part directly by the city council. As of 1 January 2020, Oslo had 693,494 residents, of which 2386 were not allocated to a borough.

Former borough structure

Borough structure 1973–88

From 1973 to 30 June 1988, Oslo had 40 boroughs. Some existed only on paper, since they were to be constituted only when the areas were built.

• Borough 1: Ruseløkka, Skillebekk, Frogner
• Borough 2: Homansbyen, Uranienborg, Majorstua, parts of Fagerborg
• Borough 3: St. Hanshaugen, Gamle Aker, parts of Ila and Fagerborg
• Borough 4: Marienlyst, Ullevål, Lindern, parts of Fagerborg
• Borough 5: Bjølsen, Sagene, parts of Ila
• Borough 6: Sandaker, Åsen, Torshov
• Borough 7: Grünerløkka, Møllergata
• Borough 8: Sinsen, Rodeløkka, parts of Tøyen
• Borough 9: Grønland, Gamlebyen, Kampen, Vålerenga, parts of Tøyen
• Borough 10: Ekeberg, Holtet, Bekkelaget
• Borough 11: Nordstrand
• Borough 12–13–14: Holmlia, Hauketo, Rudene
• Borough 15: Lambertseter
• Borough 16–17: Banderud, Skullerud, Rustad, Bøler, Ulsrud, Tveteråsen
• Borough 18: Ryen, Manglerud, Abildsø
• Borough 19: Skøyen, Oppsal, parts of Trasop
• Borough 20: Etterstad, Helsfyr, Teisen
• Borough 21–22: Tveita, Hellerud, Haugerud, Trosterud, parts of Trasop
• Borough 23 was to take parts of boroughs 20, 24 and 31
• Borough 24–25: Lindeberg, Furuset, Ellingsrud, Haugenstua, Høybråten, Tangerud
• Borough 26: Rommen, Fossum, Stovner
• Borough 27: Romsås
• Borough 28: Rødtvet, Ammerud, parts of Grorud
• Borough 29: Kalbakken, Flaen, parts of Grorud
• Borough 30: Linderud, Veitvet, Sletteløkka
• Borough 31: Løren, Risløkka, Økern
• Borough 32: Lofthus, Årvoll, Tonsenhagen
• Borough 33: Nydalen, Grefsen, Kjelsås
• Borough 34: Tåsen, Korsvoll, Kringsjå
• Borough 35: Vinderen, Ris, Slemdal, Holmenkollen
• Borough 36: Røa, Hovseter, Voksen
• Borough 37: Ullernåsen, Lysaker, Bestum
• Borough 38: Huseby, Smestad, Skøyen
• Borough 39: Bygdøy
• Borough 40: Marka, the islands

Borough structure 1988–2004

From 1985 to 1988, the boroughs of Stovner, Røa, Gamle Oslo and Søndre Nordstrand were trials for the new system. From 1 July 1988 to 31 December 2003, Oslo had 25 boroughs:

• Borough 1: Bygdøy–Frogner
• Borough 2: Uranienborg–Majorstuen
• Borough 3: St.Hanshaugen–Ullevål
• Borough 4: Sagene–Torshov
• Borough 5: Grünerløkka–Sofienberg
• Borough 6: Gamle Oslo
• Borough 7: Ekeberg–Bekkelaget
• Borough 8: Nordstrand
• Borough 9: Søndre Nordstrand
• Borough 10: Lambertseter
• Borough 11: Bøler
• Borough 12: Manglerud
• Borough 13: Østensjø
• Borough 14: Helsfyr-Sinsen
• Borough 15: Hellerud
• Borough 16: Furuset
• Borough 17: Stovner
• Borough 18: Romsås
• Borough 19: Grorud
• Borough 20: Bjerke
• Borough 21: Grefsen–Kjelsås
• Borough 22: Sogn
• Borough 23: Vinderen
• Borough 24: Røa
• Borough 25: Ullern

In addition Sentrum and Marka.