There are 355 properties and districts listed on the National Register in the county, including 58 National Historic Landmarks. The city of Boston is the location of more than 300 of these properties and districts, including 57 National Historic Landmarks; they are listed separately. Properties and districts located in the county's other three municipalities are listed here.
For reasons of length, the Boston list has been split into northern and southern listings, divided by the Massachusetts Turnpike. Northern Boston has 149 of these listings, including 39 districts, 48 landmarks, and three National Historic Landmark Districts. Southern Boston, including locations in Boston Harbor, has 186 listings, including 46 districts, 12 landmarks, and one National Historic Landmark District. Two historic districts overlap into both northern and southern Boston: milestones that make up the 1767 Milestones are found in both areas, and the Olmsted Park System extends through much of the city.
^The latitude and longitude information provided in this table was derived originally from the National Register Information System, which has been found to be fairly accurate for about 99% of listings. Some locations in this table may have been corrected to current GPS standards.
^Numbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
^The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.
