County Maps US

Sheridan County, Wyoming

A county in Wyoming, ranked 7 of 23 by population.

CountyFIPS 56033

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

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Population
33,241
+2,235 (+7.2%) since 2020
Land area
2,523
square miles. A further 0.1% of the total area is water
Population density
13.2
people per square mile, computed rather than published
County seat
Sheridan
Seat of county government.
Established
1888
137 years ago
Largest city
Sheridan city
Population 20,015.

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 Sheridan 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 Sheridan County, Wyoming 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 321 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 Sheridan County ranks

Position among the 23 counties of Wyoming, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WyomingNationally
Population33,2417th of 231,369th of 3,144
Land area2,523 sq mi17th of 23216th of 3,144
Population density13.2 per sq mi3rd of 232,446th of 3,144
Median household income$71,38813th of 231,094th of 3,143

Full data for Sheridan County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population33,241Vintage 2025 Population Estimates
Population in 202031,006Vintage 2025 Population Estimates
2020 estimates base?30,923Vintage 2025 Population Estimates
Land area2,523 sq mi2025 Gazetteer Files
Water area3.1 sq mi2025 Gazetteer Files
Total area2,526 sq mi2025 Gazetteer Files
Population density?13.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$71,388American Community Survey 2020-2024 5-Year Estimates
Median home value$394,900American Community Survey 2020-2024 5-Year Estimates
Median age42.7American Community Survey 2020-2024 5-Year Estimates
Households13,845American Community Survey 2020-2024 5-Year Estimates
Housing units15,461American 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
-28
337 births, 365 deaths
Net migration
+338
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 Sheridan 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
Big Horn CountyMontana81 mi12,752
Johnson CountyWyoming68 mi8,908
Big Horn CountyWyoming60 mi12,024
Campbell CountyWyoming30 mi48,145
Powder River CountyMontana12 mi1,781

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

All 23 counties of Wyoming

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

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