Clark County, Illinois: commercial real estate data.
Clark County, Illinois had an estimated 15,076 residents on July 1, 2024, down 2.6 percent since the 2020 census base of 15,481, across 501 square miles. County output reached $715.5 m in 2024, 335 establishments operate here.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Clark County
How many people live in Clark County
- Population, American Community Survey 2020-202415,266
- Households6,555
- Average household size2.33
- Median household income$72,927
- Median age42.6
- Median gross rent$861 per month
- Median owner-occupied home value$132,400
- Home value to household income1.8 times
- Annual rent as a share of median income14.2 percent
- Adults 25 and over with a bachelor degree or higher24.9 percent
- Adults 25 and over with a graduate degree8.7 percent
- Adults 25 and over10,776
- Population under 183,412
- Share under 1822.4 percent
- Population 65 and over3,095
- Share 65 and over20.3 percent
- Working age population, 18 to 648,759
- Civilian labor force7,480
- Unemployment rate3.7 percent
- Labor force participation, adults 18 and over63.1 percent
- Rank by population among Illinois counties71st of 102
- Rank by population among US county-equivalents, Puerto Rico included2146th of 3,222
Clark County is the 71st largest of 102 Illinois counties by population. A median home costs 1.8 times median household income, which is affordable by national standards. Residents under 18 outnumber those 65 and over, at 22.4 percent against 20.3 percent, a household formation profile rather than a retirement one.
US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Clark County
Is Clark County's population growing?
- Population, July 1, 202415,076
- Census 2020 base population15,481
- Population change since the 2020 census base-2.62 percent
- Population change, 2023 to 2024-142
- Births, 202498
- Deaths, 2024223
- Natural change, 2024-125
- Net domestic migration, 2024-45
- Net international migration, 202429
- Total net migration, 2024-16
- Cumulative net domestic migration, 2021 to 2024-74
- Rank by growth among US county-equivalents2662nd of 3,144
The county has lost 2.62 percent of its population since the 2020 census base. The population fell in 2024 from both sources: deaths exceeded births and more people left than moved in.
US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
Clark County
Where are people moving to Clark County from?
- Tax returns filed by households arriving321
- People arriving, from those returns557
- Tax returns filed by households leaving294
- Net household movement27
- Adjusted gross income arriving$16.3 m
- Net adjusted gross income movement$420,000
- Average income of an arriving household$50,885
- Average income of a leaving household$54,129
- Largest single originEdgar County (37 households)
- Largest single destinationVigo County (58 households)
| Origin | Households | People | Adjusted gross income |
|---|---|---|---|
| Edgar County | 37 | 69 | $2.0 m |
| Vigo County | 34 | 45 | $1.8 m |
| Coles County | 31 | 65 | $1.3 m |
| Crawford County | 29 | 56 | $1.3 m |
Households arriving report $3,244 less average income than households leaving, which drains spending power even where headcount holds up. The largest single source of arrivals is Edgar County, which is the catchment a retail or multifamily study should look at first.
US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Clark County
What is the Clark County economy?
- County GDP, 2024$715.5 m
- County GDP, 2023$676.3 m
- GDP change, 2023 to 20245.8 percent
- GDP change over five years42.3 percent
- Rank by GDP among the Illinois areas BEA publishes74th of 102
- Rank by GDP among the US county areas BEA publishes2124th of 3,127
- GDP per resident$46,866
Output grew 5.8 percent in the latest year and 42.3 percent over five, which is the trend line a lender will read behind any single year figure.
US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024.
Clark County
Employment by industry in Clark County
- Covered employment, annual average4,392
- Establishments reporting337
- Average annual pay$45,606
- Average weekly wage$877
- Manufacturing, employment980
- Manufacturing, average annual pay$59,847
- Accommodation and food services, employment524
- Accommodation and food services, average annual pay$17,761
- Retail trade, employment506
- Retail trade, average annual pay$28,651
- Construction, employment283
- Construction, average annual pay$65,712
- Finance and insurance, employment240
- Other services, except public administration, employment150
| Sector | Employment | Establishments | Average annual pay |
|---|---|---|---|
| Manufacturing | 980 | 21 | $59,847 |
| Accommodation and food services | 524 | 39 | $17,761 |
| Retail trade | 506 | 40 | $28,651 |
| Construction | 283 | 35 | $65,712 |
| Finance and insurance | 240 | 22 | $57,165 |
| Other services, except public administration | 150 | 28 | $28,643 |
| Wholesale trade | 134 | 11 | $62,681 |
| Transportation and warehousing | 103 | 11 | $99,680 |
Manufacturing is the largest private sector at 980 jobs, 22.3 percent of covered employment.
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
Clark County
How many businesses are in Clark County?
- Establishments, all industries335
- Employment at those establishments3,487
- Annual payroll$155.8 m
- Establishments per 1,000 residents21.9
These are counts of establishments physically operating in the county, not listings, so they are the supply side a feasibility study measures demand against. County Business Patterns counts private establishments with paid employees in March 2023, while the Quarterly Census of Employment and Wages above counts every unemployment-insured employer, public ones included, as a 2024 annual average, so the two establishment and employment counts differ.
US Census Bureau, County Business Patterns, 2023.
Clark County
Building permits in Clark County
- Housing units authorized by permit, 202412
- Declared construction value permitted$2.3 m
- Single family units authorized12
- Multifamily units authorized0
- Multifamily share of units0.0 percent
- Average declared value per unit$195,633
- Units authorized per 1,000 households1.8
Single-family homes are 100.0 percent of units authorized, so the pipeline is predominantly single-family.
US Census Bureau, Building Permits Survey, 2024 annual.
Clark County
SBA loans in Clark County (7(a) and 504)
- 504 approvals recorded2
- 504 gross approval dollars$722,000
- Average 504 approval$361,000
- Median 504 approval$361,000
- Distinct CDCs active1
- 504 jobs per approval6.0
- 504 jobs per million dollars approved16.6
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Clark County
How large is Clark County?
- Land area501 sq mi
- Rank by land area among Illinois counties53rd of 102
- Width, east to west25.8 mi
- Height, north to south22.4 mi
- Geographies sharing a boundary7
- Residents per square mile of land30
- Establishments per square mile0.67
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year. US Census Bureau, County Business Patterns, 2023.
Clark County
Flood risk in Clark County
- Participation of the county's own NFIP community Clark County, unincorporated areasParticipating, community 170940
- Communities in the county in the NFIP Community Status Book4
- Of those, participating in the NFIP4
- NFIP participation rate100.0 percent
- Communities carrying a CRS class0
- Radon levels in Clark County, EPA zone predicted average indoor radon screening level from 2 to 4 pCi/LZone 2
The county's own community in the status book, unincorporated Clark County (community 170940), participates in the National Flood Insurance Program and carries no Community Rating System class, so no CRS premium discount applies there. The EPA places Clark County in radon zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. The zone is a screening prediction for the county and does not substitute for a test at an address. 100.0 percent of the county's listed communities participate in the National Flood Insurance Program, per Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26. US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Coverage
What this page does not hold.
Traffic counts, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Feasibility studies
When a Clark County site needs a document a lender will accept.
The same data layer behind this page is the one the studies are written from. A study for a Clark County site starts with the figures you are reading, carrying the same source and period into the credit file.
- Population, American Community Survey 2020-202415,266
- Households6,555
- Average household size2.33
- Median household income$72,927
- Median age42.6
Common questions
Clark County questions, answered from the record.
How many people live in Clark County, Illinois?
The Census Bureau estimates 15,076 residents on July 1, 2024 (US Census Bureau, Population Estimates Program, Vintage 2024). The American Community Survey 2020-2024 five-year estimate is 15,266, in 6,555 households, ranking 71st of 102 Illinois counties. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Is Clark County's population growing?
The population has fallen 2.62 percent since the 2020 census base of 15,481, to 15,076 on July 1, 2024. In 2024 there were 98 births against 223 deaths, with net migration of -16. Source: US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
What is the median household income in Clark County?
$72,927. The median owner-occupied home is valued at $132,400, which is 1.8 times income, and median gross rent is $861 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
How many businesses are in Clark County?
335 establishments, employing 3,487 people with an annual payroll of $155.8 m. These are establishments physically operating in the county, not listings. Source: US Census Bureau, County Business Patterns, 2023.
What is employment by industry in Clark County?
Manufacturing is the largest private sector at 980 jobs, 22.3 percent of covered employment. Covered employment averages 4,392 jobs at an average annual pay of $45,606, or $877 a week. Source: US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
How many building permits were issued in Clark County?
12 housing units were authorized by permit in 2024, with a declared construction value of $2.3 m. Multifamily was 0.0 percent of units. Source: US Census Bureau, Building Permits Survey, 2024 annual.
What is the radon zone for Clark County?
Zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. Source: US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Where do people moving to Clark County come from?
The largest single origin is Edgar County, with 37 households. Arriving households report an average income of $50,885 against $54,129 for those leaving. Source: US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Are traffic counts available for Clark County on this page?
No. Annual average daily traffic resolves in the platform rather than in this dataset, so no AADT figure is printed here. It is a gap we know about rather than a figure we estimated.
Is zoning published for Clark County?
No. Nothing on this page presents parcel level zoning, and where a statutory framework applies it is marked as the statewide frame, to be confirmed locally.
Clark County
Cities and places in Clark.
5 Census places lie wholly or partly in Clark County. All 5 carry enough published place level data for a page of their own and are linked.
| Place | Type | Population | SBA 7(a) approvals, projects in this county | Lies in |
|---|---|---|---|---|
| Marshall | city | 4,040 | None recorded | Wholly in this county |
| Casey | city | 2,239 | None recorded | 97.4 percent here, 2.6 percent Cumberland County |
| Martinsville | city | 1,187 | None recorded | Wholly in this county |
| Westfield | village | 415 | None recorded | Wholly in this county |
| West Union | CDP | 140 | None recorded | Wholly in this county |