Clark County Demographics

A map of Clark County's Population by Race

Clark County, Illinois has an estimated population of 15,266, a slight decrease from the 15,455 recorded in the 2020 Census. The population is 95.0% White, 2.5% Multiracial, 1.9% Hispanic, 0.5% Black, 0.1% Asian, and 0.0% 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 is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than Illinois 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 9.7% in 2020 and 9.7% in the most recent ACS estimates.

Clark County is ranked the 71st most populous county in Illinois, out of 102 counties. Clark County was ranked the 71st most populous county in the 2020 Census.

Clark County's White Population

14,503 residents of Clark County, or 95.0% of the population, identify as White. The share of White residents in Clark County is significantly higher than in Illinois overall, where 58.1% of the population is White. Clark County ranks 9th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's White population has declined by an estimated 1.2%. White residents' share of Clark County's population has remained roughly unchanged at 95.0%.

Clark County is more White than neighboring Crawford County (90.3% White), Vigo County (84% White), and Sullivan County (90.4% White). Clark County is less White than neighboring Edgar County (95.8% White).

Clark County's Black Population

70 residents of Clark County, or 0.5% of the population, identify as Black. The share of Black residents in Clark County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Clark County ranks 90th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's Black population has grown by an estimated 29.6%. Black residents' share of Clark County's population has remained roughly unchanged at 0.5%.

Clark County is more Black than neighboring Cumberland County (0.2% Black). Clark County is less Black than neighboring Crawford County (3.4% Black), Edgar County (0.7% Black), Vigo County (5.8% Black), and Sullivan County (3% Black).

Clark County's Asian Population

19 residents of Clark County, or 0.1% of the population, identify as Asian. The share of Asian residents in Clark County is lower than in Illinois overall, where 5.9% of the population is Asian. Clark County ranks 76th statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's Asian population has declined by an estimated 63.5%. Asian residents' share of Clark County's population has remained roughly unchanged at 0.1%.

Clark County is more Asian than neighboring Cumberland County (0% Asian). Clark County is less Asian than neighboring Crawford County (0.2% Asian), Edgar County (0.2% Asian), Vigo County (2.1% Asian), and Sullivan County (0.4% Asian).

Clark County's Hispanic Population

285 residents of Clark County, or 1.9% of the population, identify as Hispanic. The share of Hispanic residents in Clark County is significantly lower than in Illinois overall, where 18.8% of the population is Hispanic. Clark County ranks 82nd statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's Hispanic population has grown by an estimated 15.9%. Hispanic residents' share of Clark County's population has remained roughly unchanged at 1.9%.

Clark County is more Hispanic than neighboring Edgar County (1.5% Hispanic), and Cumberland County (0.4% Hispanic). Clark County is less Hispanic than neighboring Crawford County (2.7% Hispanic), and Vigo County (3.2% Hispanic).

Clark County's Native American/Other Population

6 residents of Clark County, or 0.0% 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 Illinois overall, where 0.5% of the population is Native American/Other. Clark County ranks 60th statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's Native American/Other population has declined by an estimated 89.7%. Native American/Other residents' share of Clark County's population has remained roughly unchanged at 0.0%.

Clark County is less Native American/Other than neighboring Crawford County (0.6% Native American/Other), Vigo County (0.6% Native American/Other), and Sullivan County (0.6% Native American/Other).

Clark County's Multiracial Population

383 residents of Clark County, or 2.5% of the population, identify as Multiracial. The share of Multiracial residents in Clark County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Clark County ranks 96th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Clark County's Multiracial population has grown by an estimated 4.9%. Multiracial residents' share of Clark County's population has remained roughly unchanged at 2.5%.

Clark County is more Multiracial than neighboring Edgar County (1.7% Multiracial). Clark County is less Multiracial than neighboring Crawford County (2.8% Multiracial), Vigo County (4.4% Multiracial), Sullivan County (3.7% Multiracial), and Cumberland County (4.4% 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.