Massachusetts · Census place 2507000

Boston, Massachusetts

Boston is a city in Suffolk County, Massachusetts with an estimated 673,458 residents on July 1, 2024. It is the largest of 58 incorporated places of 1,000+ people in the state.

Population 2024
673,458
#1 of 58 in Massachusetts
Change since 2020
-0.3%
-2,064 people
Land area
48.3 sq mi
+ 41.27 sq mi water
Density
13,932 / sq mi
State median 2,852
Orange pin: Boston. Shaded: its county. Dark pin: Boston.

Boston population, 2020 to 2024

Boston lost 2,064 residents from July 2020 to July 2024, a change of -0.3%. In the latest year it moved by +8,855. Among 58 Massachusetts places of 5,000 or more, that growth ranks 50th; the median place changed by +1.2%. The median place of 5,000+ in Massachusetts has 44,052 people, so Boston is 15.3 times that size.

675.5k2020658.6k2021660.1k2022664.6k2023673.5k2024
July 1 estimates. The April 2020 estimates base was 678,622. The axis starts above zero so yearly changes are visible.

Boston covers 48.34 square miles of land and 41.27 of water, for 13,932 people per square mile of land. The median Massachusetts place of 5,000+ has 2,852, so Boston is denser than the typical town.

What county Boston is in

All of Boston's residents live in Suffolk County, which had 793,144 residents in 2024. Boston holds 84.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Boston

33 ZIP Code Tabulation Areas (ZCTAs) overlap Boston by at least 10% of the ZCTA's or the city's land: 02108, 02109, 02110, 02111, 02113, 02114, 02115, 02116, 02118, 02119, 02120, 02121, 02122, 02124, 02125, 02126, 02127, 02128, 02129, 02130, 02131, 02132, 02133, 02134, 02135, 02136, 02163, 02199, 02203, 02205, 02210, 02215, 02467. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Boston is

The Census internal point of Boston is at 42.338600, -71.018300. Boston, the capital, is 2.7 miles WNW in a straight line. The nearest larger place is New York, NY (8,478,072 people), 190.4 miles away. The nearest city of 100,000 or more is Quincy, MA, 5.4 miles away. The ground at the internal point is about 4 m (13 ft) above sea level.

Internal point

Decimal
42.338600, -71.018300
DMS
42°20'18.96"N 71°01'5.88"W
UTM
19N 333735.0E 4689344.5N
Geohash
drt2zgw01
Plus code
87JC8XQJ+CM
Time zone
America/New_York

Daylight in Boston

At 42.34° N, Boston gets about 15 h 17 min of daylight around the June solstice and 9 h 05 min around the December solstice, a swing of 6 h 12 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Boston daylight page.

Places near Boston

The eight nearest incorporated places of 1,000+ in Massachusetts, measured between internal points. The closest is Winthrop Town, 3.5 miles away, with 18,739 people.

Questions people ask

What is the population of Boston, MA?

673,458 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 2,064 (0.3%) from 675,522 in July 2020.

What county is Boston in?

Suffolk County. All of its residents live in that county.

What ZIP codes cover Boston?

33 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 02108, 02109, 02110, 02111, 02113, 02114, 02115, 02116, 02118, 02119, 02120, 02121, and more.

How far is Boston from Boston?

2.7 miles (4.3 km) in a straight line, heading WNW from Boston.

What is the nearest larger city to Boston?

New York, NY, with 8,478,072 residents, 190.4 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)
  5. 05Open-Meteo forecast API (time zone and Copernicus GLO-90 elevation) (last verified 2026-09-30)

How every number is computed: methodology. Spotted a wrong figure? Report an error.