County Maps US

Erie County, New York

A county in New York, ranked 8 of 62 by population.

CountyFIPS 36029

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

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Population
946,741
-5,750 (-0.6%) since 2020
Land area
1,043
square miles. A further 15.0% of the total area is water
Population density
908
people per square mile, computed rather than published
County seat
Buffalo
Seat of county government.
Established
1821
204 years ago
Largest city
Buffalo city
Population 274,613.

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 Erie 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 Erie 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 622 by 800 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 Erie 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
Population946,7418th of 6259th of 3,144
Land area1,043 sq mi14th of 62631st of 3,144
Population density908 per sq mi11th of 62172nd of 3,144
Median household income$72,83929th of 62983rd of 3,143

Full data for Erie County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population946,741Vintage 2025 Population Estimates
Population in 2020952,491Vintage 2025 Population Estimates
2020 estimates base?954,226Vintage 2025 Population Estimates
Land area1,043 sq mi2025 Gazetteer Files
Water area184.1 sq mi2025 Gazetteer Files
Total area1,227 sq mi2025 Gazetteer Files
Population density?908 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$72,839American Community Survey 2020-2024 5-Year Estimates
Median home value$233,800American Community Survey 2020-2024 5-Year Estimates
Median age40.4American Community Survey 2020-2024 5-Year Estimates
Households409,665American Community Survey 2020-2024 5-Year Estimates
Housing units441,214American 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
-1,177
8,783 births, 9,960 deaths
Net migration
+81
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 5 areas bordering Erie 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
Niagara CountyNew York53 mi208,912
Cattaraugus CountyNew York50 mi75,390
Wyoming CountyNew York25 mi39,741
Chautauqua CountyNew York19 mi124,126
Genesee CountyNew York15 mi58,416

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.