County Maps US

Boyle County, Kentucky

A county in Kentucky, ranked 33 of 120 by population.

CountyFIPS 21021

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

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Population
31,632
+878 (+2.9%) since 2020
Land area
180.3
square miles. A further 1.4% of the total area is water
Population density
175
people per square mile, computed rather than published
County seat
Danville
Seat of county government.
Established
1842
183 years ago
Largest city
Danville city
Population 17,736.

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 Boyle 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 Boyle County, Kentucky 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 516 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 Boyle County ranks

Position among the 120 counties of Kentucky, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn KentuckyNationally
Population31,63233rd of 1201,400th of 3,144
Land area180.3 sq mi111th of 1203,028th of 3,144
Population density175 per sq mi17th of 120614th of 3,144
Median household income$61,15942nd of 1201,971st of 3,143

Full data for Boyle County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population31,632Vintage 2025 Population Estimates
Population in 202030,754Vintage 2025 Population Estimates
2020 estimates base?30,614Vintage 2025 Population Estimates
Land area180.3 sq mi2025 Gazetteer Files
Water area2.5 sq mi2025 Gazetteer Files
Total area182.8 sq mi2025 Gazetteer Files
Population density?175 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$61,159American Community Survey 2020-2024 5-Year Estimates
Median home value$209,900American Community Survey 2020-2024 5-Year Estimates
Median age39.5American Community Survey 2020-2024 5-Year Estimates
Households12,045American Community Survey 2020-2024 5-Year Estimates
Housing units13,010American 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
-73
324 births, 397 deaths
Net migration
+409
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 Boyle 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
Garrard CountyKentucky20 mi18,207
Lincoln CountyKentucky19 mi25,353
Mercer CountyKentucky16 mi23,733
Casey CountyKentucky12 mi16,205
Marion CountyKentucky6.0 mi20,115
Washington CountyKentucky3.3 mi12,368

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

All 120 counties of Kentucky

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

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