Norfolk County, Massachusetts
County seat: Dedham · Population 739,749 (2025) · 396 sq mi
Norfolk County is the 5th most populous of Massachusetts's 14 counties, with 739,749 people (2025 estimate). Its county seat is Dedham. The map shows its 5 cities and towns and the 6 neighboring counties.
Norfolk County facts
- County seat
- Dedham
- Population (2025 estimate)
- 739,749 +1.9% since 2020
- Land area
- 396 sq mi 10th largest of 14
- Water area
- 48 sq mi
- Population density
- 1,868 per sq mi
- Established
- 1793
- Named after
- Norfolk county in East Anglia, England, UK
- Largest city
- Quincy 103,173
- Median household income
- $130,739
- Cities and towns
- 5 plus 14 CDPs
- ZIP codes
- 41
- Time zone
- Eastern
- FIPS code
- 25021
Cities and towns in Norfolk County
Norfolk County has 5 incorporated cities, towns and villages. Populations count the people living inside Norfolk County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Quincy | City | 103,173 | |
| Weymouth Town | City | 59,759 | |
| Braintree Town | City | 38,957 | |
| Randolph Town | City | 34,948 | |
| Franklin Town | City | 33,955 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Brookline | 63,266 | |
| Needham | 32,459 | |
| Norwood | 31,542 | |
| Wellesley | 30,347 | |
| Milton | 28,587 | |
| Dedham | 25,237 | |
| Holbrook | 11,380 | |
| Medfield | 6,849 | |
| Walpole | 6,461 | |
| Foxborough | 6,251 | |
| Sharon | 6,232 | |
| Bellingham | 5,325 | |
| Millis-Clicquot | 4,437 | |
| Dover | 2,308 |
ZIP codes in Norfolk County
41 ZIP codes reach into Norfolk County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 02019
- 02021
- 02025
- 02026
- 02030
- 02032
- 02035
- 02038
- 02052
- 02053
- 02054
- 02056
- 02062
- 02067
- 02071
- 02072
- 02081
- 02090
- 02093
- 02169
- 02170
- 02171
- 02184
- 02186
- 02188
- 02189
- 02190
- 02191
- 02215 also Suffolk County
- 02322
- 02343
- 02368
- 02445 also Suffolk County
- 02446 also Suffolk County
- 02457
- 02467 also Middlesex and Suffolk counties
- 02481
- 02482
- 02492
- 02494
- 02762
Population of Norfolk County, 2020–2025
Norfolk County grew by 13,728 people (+1.9%) between April 2020 and July 2025: 3,673 more births than deaths and a net gain of 9,837 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 723,647 |
| 2021 | 724,970 |
| 2022 | 727,727 |
| 2023 | 730,453 |
| 2024 | 737,601 |
| 2025 | 739,749 |
Neighboring counties
- Plymouth County southeast · 546,829 people
- Suffolk County northeast · 791,891 people
- Middlesex County northwest · 1,669,979 people
- Bristol County south · 593,640 people
- Worcester County west · 888,502 people
- Providence County, Rhode Island southwest · 678,179 people
Printable Norfolk County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (134 KB)
- PNG (2400 px) (120 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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