County Maps US

Jessamine County, Kentucky

A county in Kentucky, ranked 17 of 120 by population.

CountyFIPS 21113

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

Download SVGFull Kentucky map downloads

Population
57,147
+4,109 (+7.7%) since 2020
Land area
172.1
square miles. A further 1.4% of the total area is water
Population density
332
people per square mile, computed rather than published
County seat
Nicholasville
Seat of county government.
Established
1798
227 years ago
Largest city
Nicholasville city
Population 33,857.

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 Jessamine 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 Jessamine 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 681 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 Jessamine 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
Population57,14717th of 120930th of 3,144
Land area172.1 sq mi113th of 1203,039th of 3,144
Population density332 per sq mi7th of 120400th of 3,144
Median household income$74,57610th of 120864th of 3,143

Full data for Jessamine County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population57,147Vintage 2025 Population Estimates
Population in 202053,038Vintage 2025 Population Estimates
2020 estimates base?52,999Vintage 2025 Population Estimates
Land area172.1 sq mi2025 Gazetteer Files
Water area2.4 sq mi2025 Gazetteer Files
Total area174.5 sq mi2025 Gazetteer Files
Population density?332 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$74,576American Community Survey 2020-2024 5-Year Estimates
Median home value$268,100American Community Survey 2020-2024 5-Year Estimates
Median age38.7American Community Survey 2020-2024 5-Year Estimates
Households19,913American Community Survey 2020-2024 5-Year Estimates
Housing units21,198American 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
+104
661 births, 557 deaths
Net migration
+720
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 Jessamine 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 CountyKentucky28 mi18,207
Fayette CountyKentucky18 mi329,751
Madison CountyKentucky12 mi101,696
Woodford CountyKentucky10 mi27,883
Mercer CountyKentucky5.4 mi23,733

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.