County demographics · Massachusetts
Suffolk County, Massachusetts demographics
Suffolk County, Massachusetts (county FIPS 25025) has a median household income of $95,631 (±$1,765) and a total population of 785,121 in the American Community Survey 5-year estimates for 2020-2024.
Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 39 ZIP Code Tabulation Areas overlap the county (Census 2020).
Data as of Oct 22, 2026 (Olympus publication) · Markdown version
- Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
- ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.
ACS 5-year estimates, 2020-2024
Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.
| Metric | Estimate | Margin of error (90%) | ACS table |
|---|---|---|---|
| Total population | 785,121 | none (controlled estimate) | B01003 |
| Median age | 33.9 years | ±0.1 years | B01002 |
| Households | 327,167 | ±1,440 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $95,631 | ±$1,765 | B19013 |
| Median value of owner-occupied housing units | $705,800 | ±$8,139 | B25077 |
| Median gross rent | $2,129 | ±$24 | B25064 |
| Owner-occupied share of occupied housing units | 36.5% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 63.5% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 87.5% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 50.6% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 16.2% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 6.3% | none (derived from several estimates) | B23025 (derived) |
- Dollar values are in 2024 inflation-adjusted dollars.
- Percentages' margins of error are in percentage points (pp).
Geography
| Measure | Value |
|---|---|
| County FIPS | 25025 |
| Land area | 58.26 sq mi |
| Water area | 61.97 sq mi |
| Population density | 13,477 per sq mi of land |
| Geography vintage | 2024 Gazetteer |
ZIP codes (ZCTAs) in this county
ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.
| ZCTA | Share of county land | Share of ZCTA land | County is the ZCTA's primary county |
|---|---|---|---|
| 02151 | 9.8% | 100% | Yes |
| 02128 | 8.6% | 100% | Yes |
| 02132 | 8.3% | 100% | Yes |
| 02136 | 7.9% | 100% | Yes |
| 02130 | 6.1% | 100% | Yes |
| 02124 | 5.1% | 100% | Yes |
| 02131 | 4.8% | 100% | Yes |
| 02135 | 4.5% | 100% | Yes |
| 02150 | 3.8% | 100% | Yes |
| 02125 | 3.7% | 100% | Yes |
| 02127 | 3.5% | 100% | Yes |
| 02121 | 3.2% | 100% | Yes |
| 02126 | 3.1% | 100% | Yes |
| 02122 | 2.9% | 100% | Yes |
| 02152 | 2.8% | 100% | Yes |
| 02119 | 2.8% | 100% | Yes |
| 02129 | 2.3% | 100% | Yes |
| 02134 | 2.1% | 100% | Yes |
| 02118 | 1.9% | 100% | Yes |
| 02210 | 1.6% | 100% | Yes |
| 02215 | 1.4% | 95% | Yes |
| 02115 | 1.2% | 100% | Yes |
| 02116 | 1.1% | 100% | Yes |
| 02120 | 1.1% | 100% | Yes |
| 02467 | 1% | 12.1% | |
| 02114 | 0.8% | 100% | Yes |
| 02108 | 0.5% | 100% | Yes |
| 02111 | 0.3% | 100% | Yes |
| 02163 | 0.3% | 100% | Yes |
| 02110 | 0.3% | 100% | Yes |
| 02109 | 0.3% | 100% | Yes |
| 02113 | 0.2% | 100% | Yes |
| 02445 | 0.1% | 2.7% | |
| 02199 | 0.1% | 100% | Yes |
| 02205 | 0.1% | 100% | Yes |
| 02133 | 0% | 100% | Yes |
| 02203 | 0% | 100% | Yes |
| 02149 | 0% | 0.1% | |
| 02446 | 0% | 0.2% |
Sources
- American Community Survey 5-year estimates (Census Data API) — U.S. Census Bureau. ACS 5-year 2020-2024 (release acs5-2024:county), source date 2025-09-02. https://api.census.gov/data/2024/acs/acs5?get=NAME,B01003_001E,B01003_001M,B01002_001E,B01002_001M,B11001_001E,B11001_001M,B19013_001E,B19013_001M,B25077_001E,B25077_001M,B25064_001E,B25064_001M,B25003_001E,B25003_002E,B25003_003E,B15003_001E,B15003_017E,B15003_018E,B15003_019E,B15003_020E,B15003_021E,B15003_022E,B15003_023E,B15003_024E,B15003_025E,B17001_001E,B17001_002E,B23025_003E,B23025_005E&for=county:025&in=state:25
- Published by Olympus on Oct 22, 2026.
- Source data: U.S. Census Bureau. Works of the U.S. government are not subject to copyright in the United States.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
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