Cortland County, New York
County seat: Cortland · Population 45,850 (2025) · 499 sq mi
Cortland County is the 51st most populous of New York's 62 counties, with 45,850 people (2025 estimate). Its county seat is Cortland. The map shows its 4 cities and towns and the 7 neighboring counties.
Cortland County facts
- County seat
- Cortland
- Population (2025 estimate)
- 45,850 −2.1% since 2020
- Land area
- 499 sq mi 43rd largest of 62
- Water area
- 3 sq mi
- Population density
- 92 per sq mi
- Established
- 1808
- Named after
- Pierre Van Cortlandt American politician (1721–1814); first Lieutenant Governor of the State of New York
- Largest city
- Cortland 17,394
- Median household income
- $70,418
- Cities and towns
- 4 plus 4 CDPs
- ZIP codes
- 18
- Time zone
- Eastern
- FIPS code
- 36023
Cities and towns in Cortland County
Cortland County has 4 incorporated cities, towns and villages. Populations count the people living inside Cortland County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Cortland (county seat) | City | 17,394 | |
| Homer | Village | 3,054 | |
| McGraw | Village | 970 | |
| Marathon | Village | 874 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Munsons Corners | 2,662 | |
| Cortland West | 1,020 | |
| Virgil | 220 | |
| Blodgett Mills | 212 |
ZIP codes in Cortland County
18 ZIP codes reach into Cortland County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 13040 also Chenango County
- 13045 also Cayuga and Tompkins counties
- 13052 also Madison, Chenango and Onondaga counties
- 13053 also Tompkins County
- 13077 also Onondaga and Cayuga counties
- 13087
- 13101
- 13136 also Chenango County
- 13141 also Onondaga County
- 13158 also Onondaga County
- 13159 also Onondaga County
- 13738
- 13784
- 13803 also Broome County
- 13835 also Tioga and Broome counties
- 13841 also Chenango and Broome counties
- 13862 also Broome County
- 13863 also Broome County
Population of Cortland County, 2020–2025
Cortland County shrank by 958 people (−2.1%) between April 2020 and July 2025: 286 more deaths than births and a net loss of 679 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 46,745 |
| 2021 | 46,488 |
| 2022 | 46,128 |
| 2023 | 46,004 |
| 2024 | 46,062 |
| 2025 | 45,850 |
Neighboring counties
- Chenango County east · 45,715 people
- Onondaga County north · 466,584 people
- Tompkins County southwest · 104,047 people
- Broome County southeast · 195,736 people
- Cayuga County northwest · 74,365 people
- Tioga County south · 47,453 people
- Madison County northeast · 67,120 people
Printable Cortland 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) (102 KB)
- PNG (2400 px) (86 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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