Clark County, Ohio Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Clark County, OH Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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C
Health Below averageLess healthy than 77% of counties in Ohio
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C
Income Below average
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D
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Population | 135,157 | 11,799,428 | 337,468,954 |
| Population density (per sq mi) | 336.4 | 263.2 | 86.4 |
| Population growth (%/yr) | -0.10% | 0.23% | 0.59% |
| Median age | 42.2 | 38.5 | 37.3 |
| Households | 55,975 | 4,857,236 | 130,235,071 |
Population in Clark County declined by 3.8% from 2009 to 2024, reaching 135,157 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Clark County is Gen X, aged 45–60, at 20.6% of residents. That is 0.5 points above Ohio as a whole.
- Gen Z 13–28 26,913 19.9% -0.9 pts
- Millennials 29–44 25,725 19.0% -2.1 pts
- Gen X 45–60 27,868 20.6% +0.5 pts
- Boomers 61–79 26,221 19.4% +1.3 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Ohio, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.9% of the people living in Clark County and men 49.1%.
- Women 50.9% Ohio 50.8%
- Men 49.1% Ohio 49.2%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Clark County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Clark County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Median household income | $63,493 | $71,509 | $80,455 |
| Income growth (%/yr) | 4.63% | 4.38% | 4.80% |
| Unemployment rate | 6.7% | 4.8% | 5.2% |
The median household income in Clark County is about 11% lower than in Ohio.
Housing
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Median home price | $161,588 | $139,044 | $248,835 |
| Median rent | $872 | $1,033 | $1,407 |
| Homeownership rate | 69.4% | 67.2% | 65.2% |
The median home price in Clark County is about 15.4 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $872 per month for that long.
Commute Time & Mobility
Commuters in Clark County spend about 38 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 158 hours, about 6.6 full days, spent commuting.
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 19.0 | 21.1 | 22.4 |
| Round-trip commute (min) | 37.9 | 42.2 | 44.8 |
| Yearly time spent (hours) | 158 | 176 | 187 |
| Estimated yearly cost | $4,900 | $5,447 | $5,790 |
| Work from home | 9.6% | 13.0% | 15.0% |
| Highway traffic (vehicles/day) | 8,818 | 8,648 | 8,813 |
| Local road traffic (vehicles/day) | 1,172 | 1,212 | 1,355 |
Fastest commutes among counties in
Ohio:
Hancock County (15.3 min), Van Wert County (15.5 min), Mercer County (16.0 min).
Slowest:
Morgan County (32.5 min), Vinton County (32.0 min), Brown County (32.0 min).
The average commute time in Clark County is 19 minutes, shorter than the 21 minutes in Ohio.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Clark County has a education index of D, which means it is barely educated.
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 17.3% | 28.1% | 31.6% |
| Average household size | 2.37 | 2.37 | 2.53 |
Highest education index among counties in
Ohio:
Delaware County (0.4), Warren County (0.4), Greene County (0.3).
Lowest:
Holmes County (0.1), Vinton County (0.2), Noble County (0.2).
Health
Clark County has a health index of C, which means it is somewhat healthy.
| Metric | Clark County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 74.3 | 77.0 | 78.3 |
| Self-rated poor health | 18.9% | 17.2% | 16.3% |
| Smokers | 24.5% | 24.3% | 19.0% |
Highest health index among counties in
Ohio:
Delaware County (0.8), Union County (0.8), Warren County (0.8).
Lowest:
Adams County (0.8), Holmes County (0.8), Scioto County (0.8).
Clark County, OH Compared With Nearby Counties
Clark County, OH is the 2nd largest of the 6 counties compared here, 135,157 residents against a local median of 46,089. Clark County, OH's median home price, at $161,588, runs 28% below the $223,077 typical of the counties around it.
Median household income tells the same story from another angle: $63,493 against a local median of $76,958, 17% below it. The one measure here that carries a verdict is median household income, and at 17% below the local median it puts Clark County, OH at the weaker end of the local range. The counties themselves spread $179,005 on median home price, so Clark County, OH sits at one end of an already wide local range rather than apart from it. Clark County, OH has the 5th highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Clark County, OH | 135,157 | $63,493 #6/6 | $161,588 #5/6 | 19.0 min #2/6 |
| Champaign County, OH | 38,804 | $75,502 | $252,679 | 22.7 min |
| Greene County, OH | 169,687 | $88,933 | $179,506 | 20.3 min |
| Madison County, OH | 44,416 | $88,282 | $268,005 | 25.2 min |
| Miami County, OH | 110,296 | $76,958 | $223,077 | 20.1 min |
| Logan County, OH | 46,089 | $71,742 | $89,001 | 18.4 min |
Frequently Asked Questions
Common questions about Clark County, Ohio.
How many people live in Clark County, Ohio?
About 135,157 people live in Clark County, Ohio, in 55,975 households of 2.4 people on average. The median age is 42.2, so residents are older than the U.S. median of 37.3 by about 5 years.
How densely populated is Clark County, Ohio?
Averaged over its land area, Clark County, Ohio has 336 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 3.9 times the U.S. average of 86.
Is Clark County, Ohio an affordable place to live?
The median home costs 2.5 times the median household income ($161,588 against $63,493), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $872 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in Clark County, Ohio?
Unemployment in Clark County, Ohio is 6.7%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
What share of adults in Clark County, Ohio have a college degree?
17.3% of adults in Clark County, Ohio hold a bachelor's degree or higher (about 1 in 6), well below the U.S. share of 31.6%.
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