Clark County, Illinois
Clark County, Illinois · ZIP 61933, 62413, 62420
- Census data · ACS 2019-2023
- 15,076 (2024 estimate)Population
- 6,597Households
- $70,625Median household income
- $123,100Median home value
- 20Towns with a page
- 9ZIP codes
Clark County in numbersOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 17,008 |
| 2010 | 16,335 |
| 2020 | 15,455 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2010 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, county level, state 17, retrieved November 14, 2026.
Median household income $70,625 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, county level, state 17, retrieved November 14, 2026.
- Owner occupied
- 5,390 units
- Renter occupied
- 1,207 units
- Vacancy rate
- 10%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.
3,487 employees in 335 establishments with payroll in 2023, all sectors; employers themselves are not named in the source. County Business Patterns counts are published with noise.
Source: County Business Patterns 2023: employment by sector, county level, state 17, retrieved November 14, 2026.
| Measure | Clark County | Illinois |
|---|---|---|
| Population | 15,328 | 12,692,653 |
| Median household income | $70,625 | $81,702 |
| Median age | 42.0 | 38.9 |
| Median home value | $123,100 | $250,500 |
| Bachelor’s degree or higher | 24.3% | 37.2% |
| Foreign-born residents | 1.1% | 14.4% |
| Owner-occupied homes | 81.7% | 66.8% |
| Mean commute to work | 25.7 minutes | 28.1 minutes |
Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.
Townships, towns and villages in Clark County20 with a page · sort by any column
| Type | |||
|---|---|---|---|
| Marshall Township | Township | 4,456 | 31.7 sq mi |
| Marshall | City | 3,865 | 3.69 sq mi |
| Casey Township | Township | 3,406 | 36.2 sq mi |
| Casey | City | 2,376 | 2.62 sq mi |
| Wabash Township | Township | 2,048 | 73.0 sq mi |
| Martinsville Township | Township | 1,488 | 41.6 sq mi |
| Martinsville | City | 1,083 | 2.02 sq mi |
| Westfield Township | Township | 631 | 17.8 sq mi |
| Westfield | Village | 520 | 0.98 sq mi |
| York Township | Township | 486 | 31.3 sq mi |
| Anderson Township | Township | 419 | 32.3 sq mi |
| Johnson Township | Township | 363 | 36.5 sq mi |
| Dolson Township | Township | 351 | 34.5 sq mi |
| Melrose Township | Township | 332 | 32.9 sq mi |
| Darwin Township | Township | 325 | 27.2 sq mi |
| Orange Township | Township | 257 | 37.1 sq mi |
| Auburn Township | Township | 229 | 15.8 sq mi |
| West Union | Census designated place | 164 | 1.81 sq mi |
| Parker Township | Township | 160 | 35.9 sq mi |
| Douglas Township | Township | 125 | 17.7 sq mi |
Populations: Census Population Estimates, Vintage 2024: subcounty totals, state 17 (2024). Land areas: Census Gazetteer 2025: counties. A dash means the figure is not in the cited file.
County officialsFrom public records
No county official is published yet. Names appear once a researcher drafts them from the county’s own site and a second person approves; office contacts only, never personal details.
Across Clark County
No job is posted in Clark County’s towns yet. Employers post from their business dashboard; public job banks are added once their terms are recorded.
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Neighboring counties
Neighboring counties
- Coles CountyPopulation 46,423 (2024 estimate)
- Crawford CountyPopulation 18,388 (2024 estimate)
- Cumberland CountyPopulation 10,305 (2024 estimate)
- Edgar CountyPopulation 16,398 (2024 estimate)
- Jasper CountyPopulation 9,092 (2024 estimate)
- Sullivan CountyPopulation 20,768 (2024 estimate)
- Vigo CountyPopulation 106,166 (2024 estimate)
Sources: Census county adjacency file 2024, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 17, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 18, retrieved November 14, 2026.