County Maps US

Oswego County, New York

A county in New York, ranked 24 of 62 by population.

CountyFIPS 36075

Within New York
Oswego County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Oswego, the county seat, located via the 2025 Census Gazetteer.

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Population
118,569
+1,132 (+1.0%) since 2020
Land area
951.6
square miles. A further 27.5% of the total area is water
Population density
125
people per square mile, computed rather than published
County seat
Oswego
Seat of county government.
Established
1816
209 years ago
Largest city
Oswego city
Population 17,024.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Oswego County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Oswego County, New York from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 716 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Oswego County ranks

Position among the 62 counties of New York, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn New YorkNationally
Population118,56924th of 62544th of 3,144
Land area951.6 sq mi19th of 62741st of 3,144
Population density125 per sq mi28th of 62773rd of 3,144
Median household income$69,18339th of 621,259th of 3,143

Full data for Oswego County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population118,569Vintage 2025 Population Estimates
Population in 2020117,437Vintage 2025 Population Estimates
2020 estimates base?117,530Vintage 2025 Population Estimates
Land area951.6 sq mi2025 Gazetteer Files
Water area360.4 sq mi2025 Gazetteer Files
Total area1,312 sq mi2025 Gazetteer Files
Population density?125 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$69,183American Community Survey 2020-2024 5-Year Estimates
Median home value$151,700American Community Survey 2020-2024 5-Year Estimates
Median age40.9American Community Survey 2020-2024 5-Year Estimates
Households47,239American Community Survey 2020-2024 5-Year Estimates
Housing units54,844American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-112
1,123 births, 1,235 deaths
Net migration
+498
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Oswego County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Jefferson CountyNew York47 mi111,540
Onondaga CountyNew York45 mi466,584
Cayuga CountyNew York39 mi74,365
Oneida CountyNew York27 mi226,392
Lewis CountyNew York15 mi26,479
Madison CountyNew York7.7 mi67,120

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 62 counties of New York

Open the interactive New York county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.