County Maps US

Grant County, Kentucky

A county in Kentucky, ranked 43 of 120 by population.

CountyFIPS 21081

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

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Population
26,181
+1,167 (+4.7%) since 2020
Land area
258
square miles. A further 1.1% of the total area is water
Population density
101
people per square mile, computed rather than published
County seat
Williamstown
Seat of county government.
Established
1820
205 years ago
Largest city
Crittenden city
Population 4,185 for the whole place, which extends beyond this county.

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 Grant 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 Grant 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 608 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 Grant 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
Population26,18143rd of 1201,575th of 3,144
Land area258 sq mi79th of 1202,890th of 3,144
Population density101 per sq mi30th of 120900th of 3,144
Median household income$69,17816th of 1201,260th of 3,143

Full data for Grant County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population26,181Vintage 2025 Population Estimates
Population in 202025,014Vintage 2025 Population Estimates
2020 estimates base?24,942Vintage 2025 Population Estimates
Land area258 sq mi2025 Gazetteer Files
Water area2.8 sq mi2025 Gazetteer Files
Total area260.8 sq mi2025 Gazetteer Files
Population density?101 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$69,178American Community Survey 2020-2024 5-Year Estimates
Median home value$209,500American Community Survey 2020-2024 5-Year Estimates
Median age36.6American Community Survey 2020-2024 5-Year Estimates
Households9,224American Community Survey 2020-2024 5-Year Estimates
Housing units10,245American 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
+82
355 births, 273 deaths
Net migration
+372
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 7 areas bordering Grant 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
Owen CountyKentucky27 mi11,601
Pendleton CountyKentucky17 mi14,800
Gallatin CountyKentucky9.7 mi8,840
Harrison CountyKentucky7.4 mi19,627
Kenton CountyKentucky4.8 mi175,779
Boone CountyKentucky4.1 mi145,316
Scott CountyKentucky1.9 mi62,262

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.