Putnam County, New York
County seat: Carmel · Population 99,028 (2025) · 230 sq mi
Putnam County is the 29th most populous of New York's 62 counties, with 99,028 people (2025 estimate). Its county seat is Carmel. The map shows its 3 cities and towns and the 5 neighboring counties.
Putnam County facts
- County seat
- Carmel
- Population (2025 estimate)
- 99,028 +1.4% since 2020
- Land area
- 230 sq mi 55th largest of 62
- Water area
- 16 sq mi
- Population density
- 430 per sq mi
- Established
- 1812
- Same name
- One of 9 Putnam Counties in the US
- Named after
- Israel Putnam American Revolutionary War general (1718–1790)
- Largest city
- Carmel 34,442
- Median household income
- $126,257
- Cities and towns
- 3 plus 7 CDPs
- ZIP codes
- 13
- Time zone
- Eastern
- FIPS code
- 36079
Cities and towns in Putnam County
Putnam County has 3 incorporated cities, towns and villages. Populations count the people living inside Putnam County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Brewster | Village | 2,509 | |
| Cold Spring | Village | 1,998 | |
| Nelsonville | Village | 635 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Mahopac | 9,039 | |
| Lake Carmel | 7,854 | |
| Carmel | 7,306 | |
| Putnam Lake | 3,664 | |
| Brewster Hill | 2,149 | |
| Brewster Heights | 1,196 | |
| Peach Lake | 622 | Westchester County |
ZIP codes in Putnam County
13 ZIP codes reach into Putnam County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 10509 also Westchester County
- 10512 also Dutchess County
- 10516
- 10524
- 10537 also Westchester County
- 10541 also Westchester County
- 10542
- 10579
- 10588 also Westchester County
- 12531 also Dutchess County
- 12533 also Dutchess County
- 12563
- 12582 also Dutchess County
Population of Putnam County, 2020–2025
Putnam County grew by 1,348 people (+1.4%) between April 2020 and July 2025: 414 more births than deaths and a net gain of 885 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 97,636 |
| 2021 | 98,272 |
| 2022 | 98,361 |
| 2023 | 98,110 |
| 2024 | 98,842 |
| 2025 | 99,028 |
Neighboring counties
- Dutchess County north · 300,708 people
- Westchester County south · 1,015,743 people
- Western Connecticut Planning Region, Connecticut southeast · 640,482 people
- Orange County west · 417,669 people
- Rockland County southwest · 357,397 people
Printable Putnam 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) (110 KB)
- PNG (2400 px) (72 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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