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Suffolk County, MA
4 cities and towns and 35 ZIP codes in Suffolk County, Massachusetts.
Population
785,121
Land area
58sq mi
People per sq mi
13,477
ZIP codes
35
Cities and towns in Suffolk County
Suffolk County at a glance
- Suffolk County is about 15 times as dense as Massachusetts as a whole.
- By population, it ranks 4th among 14 counties in Massachusetts.
- The median household income is $95,631, 8% below the Massachusetts median of $103,960.
- A typical owner-occupied home is valued at $705,800 (26% above Massachusetts) and median rent is $2,129 a month.
- Its largest cities are Boston (666,442), Revere (60,012) and Chelsea (39,908).
Local data for Suffolk County, MA
Counts from official public data
- Hospitals16
- Emergency Rooms11
- Nursing Homes22
- Schools201
- Colleges28
- Libraries28
- Banks200
- Post Offices31
- Parks474
- Grocery Stores330
- Restaurants3,257
- Affordable Housing262
- Home Health Agencies20
- Hospice Care2
- Dialysis Centers9
- Rehab & Long-Term Care Hospitals3
- Community Health Centers72
- Mental Health & Addiction Treatment64
- Private Schools47
- Community Colleges & Trade Schools5
- Superfund Sites1
- Toxic Release Facilities8
- Historic Places193
Housing and community stats
Suffolk County, MA, American Community Survey 2020-2024
Median household income
$95,631
Poverty rate
16.2%
Median home value
$705,800
Prices +3.4% in a year
Median rent
$2,129/mo
Homeownership
36.5%
Bachelor's or higher
50.6%
Median age
33.9
Average commute
30.9 min
Largest reported origins and ancestries: Irish Americans (97,778), Italian Americans (64,187), Dominican Americans (43,611).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.2%
Sep 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
$3.3B
27,844 loans, 296,919 jobs reported
Campaign donations
$55.9M
Itemized, 2026 cycle
How people get to work
Suffolk County, MA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone35.4%
- Carpooled6.1%
- Public transit22.4%
- Walked12.0%
- Bicycle1.9%
- Taxi, ride-hailing, motorcycle or other2.3%
- Worked from home19.9%
Average one-way commute: 30.9 minutes for people who do not work from home.
Environment and hazard risk
Suffolk County, MA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: lightning
Storm events since 1996
610
Most often thunderstorm wind
Flood insurance policies
3,270
2.5% of homes, county
July high / Jan low
82° / 23°F
43.6 inches of rain a year
Hazards, floods and storm historyCheck a flood zone193 historic places
Health statistics
Share of adults in Suffolk County, MA, CDC PLACES estimates
Obesity
24.2%
U.S. 33.3% -9.1 pts
Diabetes
9.3%
U.S. 12.1% -2.8 pts
Smoking
11.1%
U.S. 12.8% -1.7 pts
Uninsured (18-64)
6.6%
U.S. 11.1% -4.5 pts
Cities, towns and ZIP codes in Suffolk County
Population shown
Frequently asked questions
- What is the largest city in Suffolk County, MA?
- Boston is the largest city or town in Suffolk County, with about 666,442 residents.
- How many ZIP codes are in Suffolk County?
- Suffolk County includes 35 ZIP Code Tabulation Areas, including 02108, 02109, 02110, 02111, 02113.
- What is the population of Suffolk County, MA?
- About 785,121 people live in Suffolk County, based on American Community Survey 5-year estimates.
- What counties border Suffolk County?
- Suffolk County borders Middlesex County, Essex County, Norfolk County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023