County Maps US

Hardin County, Illinois

The least populous of Illinois's 102 counties.

CountyFIPS 17069

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

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Population
3,588
-66 (-1.8%) since 2020
Land area
177.4
square miles. A further 2.2% of the total area is water
Population density
20.2
people per square mile, computed rather than published
County seat
Elizabethtown
Seat of county government.
Established
1839
186 years ago
Largest city
Rosiclare city
Population 977.

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 Hardin 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 Hardin County, Illinois 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 589 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 Hardin County ranks

Position among the 102 counties of Illinois, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn IllinoisNationally
Population3,588102nd of 1022,917th of 3,144
Land area177.4 sq mi101st of 1023,032nd of 3,144
Population density20.2 per sq mi91st of 1022,242nd of 3,144
Median household income$54,27197th of 1022,519th of 3,143

Full data for Hardin County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population3,588Vintage 2025 Population Estimates
Population in 20203,654Vintage 2025 Population Estimates
2020 estimates base?3,659Vintage 2025 Population Estimates
Land area177.4 sq mi2025 Gazetteer Files
Water area4.0 sq mi2025 Gazetteer Files
Total area181.4 sq mi2025 Gazetteer Files
Population density?20.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$54,271American Community Survey 2020-2024 5-Year Estimates
Median home value$103,800American Community Survey 2020-2024 5-Year Estimates
Median age53.6American Community Survey 2020-2024 5-Year Estimates
Households1,545American Community Survey 2020-2024 5-Year Estimates
Housing units2,337American 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
-14
34 births, 48 deaths
Net migration
0
Arrivals and departures balanced.

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

The 6 areas bordering Hardin 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
Crittenden CountyKentucky20 mi8,807
Gallatin CountyIllinois14 mi4,616
Pope CountyIllinois12 mi3,672
Union CountyKentucky6.6 mi12,839
Livingston CountyKentucky3.8 mi8,863
Saline CountyIllinois2.1 mi22,772

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

All 102 counties of Illinois

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

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