Clark County, Ohio Demographics 2026
Clark County, Ohio has a population of 135,158, the 21st most populous county in Ohio. The median household income is $63,132 and the median home value is $169,900. The poverty rate is 15.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Clark County Quick Facts
How Clark County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 135,445 | 135,158 | -0.2% |
| Median household income | $60,846 | $63,132 | +3.8% |
| Median home value | $155,900 | $169,900 | +9.0% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Clark County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Springfield | 58,190 | $47,143 | 23.1% | $116,800 |
| Northridge | 7,817 | $84,974 | 8.2% | $193,800 |
| New Carlisle | 5,544 | $64,443 | 18.7% | $131,800 |
| Park Layne | 4,301 | $82,604 | 13.3% | $131,400 |
| Enon | 2,587 | $96,912 | 6.3% | $206,600 |
| Green Meadows | 2,144 | $73,281 | 14.3% | $157,800 |
| South Charleston | 1,727 | $49,896 | 16.3% | $141,300 |
| Holiday Valley | 1,660 | $91,705 | 3.7% | $206,800 |
| Crystal Lakes | 1,245 | $62,583 | 25.9% | $136,800 |
| Medway | 580 | $90,814 | 14.9% | $182,300 |
| South Vienna | 541 | $69,118 | 1.7% | $162,100 |
| North Hampton | 329 | $76,528 | 3.6% | $185,200 |
| Donnelsville | 308 | $67,708 | 15.0% | $142,200 |
| Catawba | 305 | $68,500 | 7.5% | $136,900 |
| Lawrenceville | 302 | $55,163 | 10.9% | N/A |
| Tremont City | 265 | $70,500 | 14.7% | $158,300 |
Explore Ohio Rankings
Population Overview
Clark County is located in Ohio with a total population of 135,158. It is the 21st most populous county out of 88 in Ohio. The county encompasses 16 Census-designated places.
Age Demographics
The median age in Clark County is 41.2 years. This is 4% higher than the state median of 39.7 years.
Economy, Income & Housing
The median household income in Clark County is $63,132. This is 12% lower than the state median of $71,389. It is also 22% lower than the national median of $80,734. The poverty rate stands at 15.2%. This is 14% higher than the state poverty rate of 13.3%. The unemployment rate is 6.7%. This is 41% higher than the state rate of 4.8%. The median home value is $169,900. Housing costs are 21% lower than the state median of $214,800. With a home-value-to-income ratio of just 2.7x, Clark County is one of the most affordable housing markets in the area. 69.4% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 67.2%.
Race & Ethnicity
The largest racial or ethnic group in Clark County is White (non-Hispanic), making up 81.7% of the population. Black or African American residents account for 8.0%. The Asian population (0.6%) is well below the state average of 2.5%.
Education
20.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 36% lower than the state rate of 31.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.0%.
Data Sources & Methodology
All figures for Clark County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Ohio and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Clark County, Ohio?
Clark County has a population of 135,158, making it the 21st most populous county in Ohio.
What is the median income in Clark County?
The median household income in Clark County is $63,132 with a poverty rate of 15.2%.
How many cities are in Clark County, Ohio?
Clark County contains 16 Census-designated places.