County Maps US

Spencer County, Indiana

A county in Indiana, ranked 73 of 92 by population.

CountyFIPS 18147

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

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Population
20,061
+230 (+1.2%) since 2020
Land area
396.9
square miles. A further 1.2% of the total area is water
Population density
50.5
people per square mile, computed rather than published
County seat
Rockport
Seat of county government.
Established
1818
207 years ago
Largest city
Santa Claus town
Population 2,641.

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 Spencer 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 Spencer County, Indiana 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 757 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 Spencer County ranks

Position among the 92 counties of Indiana, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn IndianaNationally
Population20,06173rd of 921,825th of 3,144
Land area396.9 sq mi46th of 922,540th of 3,144
Population density50.5 per sq mi77th of 921,465th of 3,144
Median household income$74,50626th of 92868th of 3,143

Full data for Spencer County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population20,061Vintage 2025 Population Estimates
Population in 202019,831Vintage 2025 Population Estimates
2020 estimates base?19,809Vintage 2025 Population Estimates
Land area396.9 sq mi2025 Gazetteer Files
Water area4.6 sq mi2025 Gazetteer Files
Total area401.5 sq mi2025 Gazetteer Files
Population density?50.5 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$74,506American Community Survey 2020-2024 5-Year Estimates
Median home value$185,200American Community Survey 2020-2024 5-Year Estimates
Median age44.4American Community Survey 2020-2024 5-Year Estimates
Households8,078American Community Survey 2020-2024 5-Year Estimates
Housing units8,727American 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
-72
184 births, 256 deaths
Net migration
-23
More people moved out than moved in.

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

The 5 areas bordering Spencer 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
Warrick CountyIndiana39 mi66,803
Perry CountyIndiana31 mi19,389
Daviess CountyKentucky26 mi104,898
Dubois CountyIndiana12 mi44,016
Hancock CountyKentucky11 mi9,050

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

All 92 counties of Indiana

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

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