What county is Boston, MA in?

Boston is in Suffolk County, Massachusetts.

What ZIP codes are in Boston, MA?

ZIP codes in or overlapping Boston include 02108, 02109, 02110, 02111, 02113, 02114, 02115, 02116, 02118, 02119, 02120, 02121 and others.

What is the population of Boston, MA?

About 666,442 people live in Boston, based on American Community Survey 5-year estimates.

What cities are near Boston?

Nearby places include Brookline (3.2 mi), Milton (5.1 mi), Cambridge (5.2 mi), Somerville (5.8 mi), Quincy (5.8 mi).

Boston, MA: ZIP Codes, Population & Local Data

Population

666,442

Land area

48.3sq mi

People per sq mi

13,786

ZIP codes

33

Boston at a glance

Boston is about 15 times as dense as Massachusetts as a whole.
No city in Massachusetts has more people.
The median household income is $97,344, 6% below the Massachusetts median of $103,960.
A typical owner-occupied home is valued at $731,700 (30% above Massachusetts) and median rent is $2,147 a month.

Local data for Boston, MA

Counts from official public data

Housing and community stats

Boston, MA, American Community Survey 2020-2024

Full profile

Median household income

$97,344

Poverty rate

16.6%

Median home value

$731,700

Median rent

$2,147/mo

Homeownership

35.7%

Bachelor's or higher

54.9%

Median age

33.3

Average commute

30.3 min

Largest reported origins and ancestries: Irish Americans (87,634), Italian Americans (48,804), Dominican Americans (40,543).

Home values and rents Income, education and commute

Economy and federal money

Jobs, pay, income and spending are for Suffolk County. PPP loans are for Boston.

Details

Unemployment rate

4.4%

Aug 2026, -0.3 pts in a year

Average annual pay

$138,226

712,462 jobs, 2025

Income per person

$109,447

BEA, 2024

Federal spending

$11.3B

FY 2026, $14,206 per person

PPP loans

$3.1B

24,841 loans, 276,798 jobs reported

Suffolk County economy Federal spending PPP loans

How people get to work

Boston, MA, workers 16 and older. American Community Survey 5-year estimates

Drove alone32.9%
Carpooled5.2%
Public transit22.6%
Walked13.4%
Bicycle2.2%
Taxi, ride-hailing, motorcycle or other2.3%
Worked from home21.3%

Average one-way commute: 30.3 minutes for people who do not work from home.

Environment and hazard risk

Boston, MA, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: lightning

Storm events since 1996

610

Countywide, mostly thunderstorm wind

Flood insurance policies

3,270

2.5% of homes, county

July high / Jan low

85° / 19°F

49.4 inches of rain a year

Hazards, floods and storm history Check a flood zone 175 historic places

Health statistics

Share of adults in Boston, MA, CDC PLACES estimates

All 40 measures

Obesity

23.4%

U.S. 33.3% -9.9 pts

Diabetes

8.6%

U.S. 12.1% -3.5 pts

Smoking

10.7%

U.S. 12.8% -2.1 pts

Uninsured (18-64)

6.3%

U.S. 11.1% -4.8 pts

ZIP codes in Boston

33 in or overlapping Boston. Population shown

Cities near Boston

Name	Distance	Land area (sq mi)
BrooklineCensus-designated place	3.2 mi	6.8
MiltonCensus-designated place	5.1 mi	13
CambridgeCity	5.2 mi	6.4
SomervilleCity	5.8 mi	4.1
QuincyCity	5.8 mi	16.6
WatertownCity	6.3 mi	4
NewtonCity	6.4 mi	17.8
Winthrop TownCity	6.4 mi	2
EverettCity	6.5 mi	3.4
ChelseaCity	6.6 mi	2.2
DedhamCensus-designated place	6.7 mi	10.3
BelmontCensus-designated place	7.4 mi	4.6
MedfordCity	8 mi	8.1
NeedhamCensus-designated place	8 mi	12.3
MaldenCity	8.1 mi	5
RevereCity	8.4 mi	5.7

Frequently asked questions

What county is Boston, MA in?: Boston is in Suffolk County, Massachusetts.
What ZIP codes are in Boston, MA?: ZIP codes in or overlapping Boston include 02108, 02109, 02110, 02111, 02113, 02114, 02115, 02116, 02118, 02119, 02120, 02121 and others.
What is the population of Boston, MA?: About 666,442 people live in Boston, based on American Community Survey 5-year estimates.
What cities are near Boston?: Nearby places include Brookline (3.2 mi), Milton (5.1 mi), Cambridge (5.2 mi), Somerville (5.8 mi), Quincy (5.8 mi).