Clark County Demographics

A map of Clark County's Population by Race

Clark County, Ohio has an estimated population of 135,158, a less than 1% change from the 136,001 recorded in the 2020 Census. The population is 81.7% White, 8.0% Black, 5.1% Multiracial, 4.2% Hispanic, 0.6% Asian, and 0.3% Native American/Other. This demographic dot map shows the population of Clark County, with one dot drawn for each person counted by the Census, color-coded by race.

Clark has become less racially diverse since the 2020 Census. It is considerably less diverse than Ohio overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Clark County, that probability was 33.6% in 2020 and 32.1% in the most recent ACS estimates.

Clark County is ranked the 21st most populous county in Ohio, out of 88 counties. Clark County was ranked the 21st most populous county in the 2020 Census.

Clark County's White Population

110,444 residents of Clark County, or 81.7% of the population, identify as White. The share of White residents in Clark County is higher than in Ohio overall, where 75.8% of the population is White. Clark County ranks 77th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's White population has remained roughly the same. White residents' share of Clark County's population has increased from 80.7% to 81.7%.

Clark County is more White than neighboring Greene County (81.3% White). Clark County is less White than neighboring Champaign County (91.7% White), Madison County (86.2% White), Miami County (89.9% White), and Logan County (91.5% White).

Clark County's Black Population

10,798 residents of Clark County, or 8.0% of the population, identify as Black. The share of Black residents in Clark County is slightly lower than in Ohio overall, where 12% of the population is Black. Clark County ranks 10th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's Black population has declined by an estimated 10.6%. Black residents' share of Clark County's population has decreased from 8.9% to 8.0%.

Clark County is more Black than neighboring Champaign County (1.6% Black), Greene County (5.8% Black), Madison County (4.3% Black), Miami County (1.8% Black), and Logan County (1.7% Black).

Clark County's Asian Population

798 residents of Clark County, or 0.6% of the population, identify as Asian. The share of Asian residents in Clark County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Clark County ranks 30th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's Asian population has declined by an estimated 11.1%. Asian residents' share of Clark County's population has remained roughly unchanged at 0.6%.

Clark County is more Asian than neighboring Champaign County (0.5% Asian), and Logan County (0.5% Asian). Clark County is less Asian than neighboring Greene County (3% Asian), Madison County (1.3% Asian), and Miami County (1.9% Asian).

Clark County's Hispanic Population

5,733 residents of Clark County, or 4.2% of the population, identify as Hispanic. The share of Hispanic residents in Clark County is comparable to the share in Ohio overall, where 4.8% of the population is Hispanic. Clark County ranks 25th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's Hispanic population has grown by an estimated 7.9%. Hispanic residents' share of Clark County's population has remained roughly unchanged at 4.2%.

Clark County is more Hispanic than neighboring Champaign County (1.8% Hispanic), Greene County (3.3% Hispanic), Madison County (3.1% Hispanic), Miami County (2.1% Hispanic), and Logan County (2.4% Hispanic).

Clark County's Native American/Other Population

470 residents of Clark County, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Clark County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Clark County ranks 7th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's Native American/Other population has declined by an estimated 50.2%. Native American/Other residents' share of Clark County's population has remained roughly unchanged at 0.3%.

Clark County is less Native American/Other than neighboring Champaign County (0.7% Native American/Other), Greene County (0.9% Native American/Other), Madison County (0.6% Native American/Other), and Miami County (0.4% Native American/Other).

Clark County's Multiracial Population

6,915 residents of Clark County, or 5.1% of the population, identify as Multiracial. The share of Multiracial residents in Clark County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Clark County ranks 5th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Clark County's Multiracial population has remained roughly the same. Multiracial residents' share of Clark County's population has remained roughly unchanged at 5.1%.

Clark County is more Multiracial than neighboring Champaign County (3.6% Multiracial), Madison County (4.5% Multiracial), Miami County (3.9% Multiracial), and Logan County (3.7% Multiracial). Clark County is less Multiracial than neighboring Greene County (5.8% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.