Oswego County, New York
County seat: Oswego · Population 118,569 (2025) · 952 sq mi
Oswego County is the 24th most populous of New York's 62 counties, with 118,569 people (2025 estimate). Its county seat is Oswego. The map shows its 11 cities and towns and the 6 neighboring counties.
Oswego County facts
- County seat
- Oswego
- Population (2025 estimate)
- 118,569 +0.9% since 2020
- Land area
- 952 sq mi 19th largest of 62
- Water area
- 360 sq mi
- Population density
- 125 per sq mi
- Established
- 1816
- Named after
- Oswego River river in New York state, United States
- Largest city
- Oswego 17,024
- Median household income
- $69,183
- Cities and towns
- 11 plus 6 CDPs
- ZIP codes
- 28
- Time zone
- Eastern
- FIPS code
- 36075
Cities and towns in Oswego County
Oswego County has 11 incorporated cities, towns and villages. Populations count the people living inside Oswego County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Oswego (county seat) | City | 17,024 | |
| Fulton | City | 11,188 | |
| Pulaski | Village | 2,269 | |
| Phoenix | Village | 2,192 | |
| Central Square | Village | 1,852 | |
| Mexico | Village | 1,553 | |
| Cleveland | Village | 729 | |
| Lacona | Village | 662 | |
| Sandy Creek | Village | 618 | |
| Hannibal | Village | 536 | |
| Parish | Village | 445 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| SUNY Oswego | 3,564 | |
| Minetto | 1,437 | |
| Constantia | 1,371 | |
| Brewerton | 991 | Onondaga County |
| Sand Ridge | 838 | |
| Altmar | 243 |
ZIP codes in Oswego County
28 ZIP codes reach into Oswego County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 13028
- 13036
- 13042 also Oneida County
- 13044
- 13069 also Onondaga County
- 13074 also Cayuga County
- 13076
- 13083 also Jefferson County
- 13103
- 13111 also Cayuga County
- 13114
- 13115
- 13121
- 13126 also Cayuga County
- 13131
- 13132
- 13135 also Onondaga County
- 13142
- 13144
- 13145
- 13156 also Cayuga and Wayne counties
- 13167
- 13302
- 13316 also Oneida and Lewis counties
- 13437 also Lewis County
- 13483 also Oneida County
- 13493 also Oneida County
- 13661 also Jefferson County
Population of Oswego County, 2020–2025
Oswego County grew by 1,039 people (+0.9%) between April 2020 and July 2025: 707 more deaths than births and a net gain of 1,774 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 117,437 |
| 2021 | 118,057 |
| 2022 | 118,150 |
| 2023 | 117,939 |
| 2024 | 118,182 |
| 2025 | 118,569 |
Neighboring counties
- Jefferson County north · 111,540 people
- Onondaga County south · 466,584 people
- Cayuga County southwest · 74,365 people
- Oneida County east · 226,392 people
- Lewis County northeast · 26,479 people
- Madison County southeast · 67,120 people
Printable Oswego 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) (122 KB)
- PNG (2400 px) (105 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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