Hampden County, Massachusetts
County seat: Springfield · Population 464,338 (2025) · 617 sq mi
Hampden County is the 8th most populous of Massachusetts's 14 counties, with 464,338 people (2025 estimate). Its county seat is Springfield. The map shows its 7 cities and towns and the 6 neighboring counties.
Hampden County facts
- County seat
- Springfield
- Population (2025 estimate)
- 464,338 −0.3% since 2020
- Land area
- 617 sq mi 6th largest of 14
- Water area
- 17 sq mi
- Population density
- 753 per sq mi
- Established
- 1812
- Named after
- John Hampden English politician (1595–1643)
- Largest city
- Springfield 154,702
- Median household income
- $71,306
- Cities and towns
- 7 plus 7 CDPs
- ZIP codes
- 42
- Time zone
- Eastern
- FIPS code
- 25013
Cities and towns in Hampden County
Hampden County has 7 incorporated cities, towns and villages. Populations count the people living inside Hampden County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Springfield (county seat) | City | 154,702 | |
| Chicopee | City | 55,310 | |
| Westfield | City | 40,546 | |
| Holyoke | City | 38,023 | |
| West Springfield Town | City | 28,829 | |
| Agawam Town | City | 28,783 | |
| Palmer Town | City | 12,367 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Longmeadow | 15,696 | |
| Wilbraham | 3,679 | |
| Monson Center | 1,613 | |
| Holland | 1,301 | |
| Chester | 681 | |
| Russell | 487 | |
| Blandford | 433 |
ZIP codes in Hampden County
42 ZIP codes reach into Hampden County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 01001
- 01008 also Berkshire County
- 01009
- 01010 also Worcester County
- 01011 also Hampshire County
- 01013
- 01020
- 01022
- 01028
- 01030
- 01034
- 01036
- 01040
- 01050 also Hampshire County
- 01056
- 01057
- 01069 also Hampshire County
- 01071
- 01077
- 01079
- 01080
- 01081
- 01082 also Hampshire and Worcester counties
- 01085
- 01089
- 01095
- 01097
- 01103
- 01104
- 01105
- 01106
- 01107
- 01108
- 01109
- 01118
- 01119
- 01128
- 01129
- 01144
- 01151
- 01223 also Berkshire County
- 01521
Population of Hampden County, 2020–2025
Hampden County shrank by 1,480 people (−0.3%) between April 2020 and July 2025: 1,916 more deaths than births and a net gain of 471 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 463,651 |
| 2021 | 462,628 |
| 2022 | 461,294 |
| 2023 | 462,133 |
| 2024 | 463,418 |
| 2025 | 464,338 |
Neighboring counties
- Hampshire County north · 164,065 people
- Capitol Planning Region, Connecticut south · 994,115 people
- Berkshire County northwest · 128,224 people
- Worcester County east · 888,502 people
- Northwest Hills Planning Region, Connecticut southwest · 114,690 people
- Northeastern Connecticut Planning Region, Connecticut southeast · 98,096 people
Printable Hampden 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) (132 KB)
- PNG (2400 px) (97 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.
Back to the Massachusetts county map with all 14 counties. Found an error? Tell us.