Hardin County, Illinois
County seat: Elizabethtown · Population 3,588 (2025) · 177 sq mi
Hardin County is the 102nd most populous of Illinois's 102 counties, with 3,588 people (2025 estimate). Its county seat is Elizabethtown. It is part of the Southern region, one of the 10 Illinois economic development regions (DCEO). The map shows its 3 cities and towns and the 6 neighboring counties.
Hardin County facts
- County seat
- Elizabethtown
- Population (2025 estimate)
- 3,588 −1.9% since 2020
- Land area
- 177 sq mi 101st largest of 102
- Water area
- 4 sq mi
- Population density
- 20 per sq mi
- Established
- 1839
- Same name
- One of 6 Hardin Counties in the US
- Named after
- John Hardin Revolutionary War Militia Officer & Indian Fighter
- Largest city
- Rosiclare 977
- Median household income
- $54,271
- Cities and towns
- 3
- ZIP codes
- 5
- Time zone
- Central
- FIPS code
- 17069
Cities and towns in Hardin County
Hardin County has 3 incorporated cities, towns and villages. Populations count the people living inside Hardin County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Rosiclare | City | 977 | |
| Elizabethtown (county seat) | Village | 225 | |
| Cave-In-Rock | Village | 222 |
ZIP codes in Hardin County
5 ZIP codes reach into Hardin County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 62919
- 62931 also Gallatin County
- 62938 also Pope and Massac counties
- 62947 also Pope and Saline counties
- 62982
Population of Hardin County, 2020–2025
Hardin County shrank by 71 people (−1.9%) between April 2020 and July 2025: 168 more deaths than births and a net gain of 101 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 3,654 |
| 2021 | 3,648 |
| 2022 | 3,594 |
| 2023 | 3,614 |
| 2024 | 3,601 |
| 2025 | 3,588 |
Neighboring counties
- Crittenden County, Kentucky southeast · 8,807 people
- Gallatin County north · 4,616 people
- Pope County southwest · 3,672 people
- Union County, Kentucky northeast · 12,839 people
- Livingston County, Kentucky south · 8,863 people
- Saline County northwest · 22,772 people
Printable Hardin County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (78 KB)
- PNG (2400 px) (65 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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