County Maps US

Brown County, Indiana

A county in Indiana, ranked 79 of 92 by population.

CountyFIPS 18013

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

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Population
15,777
+296 (+1.9%) since 2020
Land area
312
square miles. A further 1.5% of the total area is water
Population density
50.6
people per square mile, computed rather than published
County seat
Nashville
Seat of county government.
Established
1836
189 years ago
Largest city
Nashville town
Population 1,273.

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 Brown 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 Brown 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 651 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 Brown 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
Population15,77779th of 922,056th of 3,144
Land area312 sq mi76th of 922,783rd of 3,144
Population density50.6 per sq mi76th of 921,460th of 3,144
Median household income$78,52814th of 92647th of 3,143

Full data for Brown County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population15,777Vintage 2025 Population Estimates
Population in 202015,481Vintage 2025 Population Estimates
2020 estimates base?15,472Vintage 2025 Population Estimates
Land area312 sq mi2025 Gazetteer Files
Water area4.6 sq mi2025 Gazetteer Files
Total area316.6 sq mi2025 Gazetteer Files
Population density?50.6 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$78,528American Community Survey 2020-2024 5-Year Estimates
Median home value$269,100American Community Survey 2020-2024 5-Year Estimates
Median age51.0American Community Survey 2020-2024 5-Year Estimates
Households6,781American Community Survey 2020-2024 5-Year Estimates
Housing units8,577American 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
-90
100 births, 190 deaths
Net migration
+250
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 Brown 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
Monroe CountyIndiana23 mi143,345
Bartholomew CountyIndiana20 mi85,729
Jackson CountyIndiana13 mi47,370
Johnson CountyIndiana8.9 mi174,262
Morgan CountyIndiana7.0 mi74,967

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.