Clinton County Demographics

A map of Clinton County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	19,680	19,264	91.9%	90.9%
Multiracial	906	1,006	4.2%	4.7%
Hispanic	567	502	2.6%	2.4%
Black	169	202	0.8%	1.0%
Native American/Other	57	125	0.3%	0.6%
Asian	35	85	0.2%	0.4%

Clinton County, Missouri has an estimated population of 21,414, a slight increase from the 21,184 recorded in the 2020 Census. The population is 91.9% White, 4.2% Multiracial, 2.6% Hispanic, 0.8% Black, 0.3% Native American/Other, and 0.2% Asian. This demographic dot map shows the population of Clinton County, with one dot drawn for each person counted by the Census, color-coded by race.

Clinton has become less racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Clinton County, that probability was 17.0% in 2020 and 15.3% in the most recent ACS estimates.

Clinton County is ranked the 53rd most populous county in Missouri, out of 115 counties. Clinton County was ranked the 53rd most populous county in the 2020 Census.

Clinton County's White Population

19,680 residents of Clinton County, or 91.9% of the population, identify as White. The share of White residents in Clinton County is significantly higher than in Missouri overall, where 76.3% of the population is White. Clinton County ranks 57th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's White population has grown by an estimated 2.2%. White residents' share of Clinton County's population has increased from 90.9% to 91.9%.

Clinton County is more White than neighboring DeKalb County (87% White), Clay County (77% White), Buchanan County (79.7% White), and Platte County (76.7% White). Clinton County is less White than neighboring Caldwell County (92% White).

Clinton County's Black Population

169 residents of Clinton County, or 0.8% of the population, identify as Black. The share of Black residents in Clinton County is considerably lower than in Missouri overall, where 10.9% of the population is Black. Clinton County ranks 58th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's Black population has declined by an estimated 16.3%. Black residents' share of Clinton County's population has remained roughly unchanged at 0.8%.

Clinton County is less Black than neighboring DeKalb County (6.5% Black), Clay County (6.8% Black), Buchanan County (5.6% Black), Caldwell County (1.2% Black), and Platte County (7.5% Black).

Clinton County's Asian Population

35 residents of Clinton County, or 0.2% of the population, identify as Asian. The share of Asian residents in Clinton County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Clinton County ranks 49th statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's Asian population has declined by an estimated 58.8%. Asian residents' share of Clinton County's population has remained roughly unchanged at 0.2%.

Clinton County is less Asian than neighboring DeKalb County (0.6% Asian), Clay County (2.6% Asian), Buchanan County (1.1% Asian), Caldwell County (0.4% Asian), and Platte County (2.5% Asian).

Clinton County's Hispanic Population

567 residents of Clinton County, or 2.6% of the population, identify as Hispanic. The share of Hispanic residents in Clinton County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Clinton County ranks 48th statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's Hispanic population has grown by an estimated 12.9%. Hispanic residents' share of Clinton County's population has remained roughly unchanged at 2.6%.

Clinton County is more Hispanic than neighboring DeKalb County (2.4% Hispanic), and Caldwell County (2.3% Hispanic). Clinton County is less Hispanic than neighboring Clay County (8% Hispanic), Buchanan County (7.6% Hispanic), and Platte County (7.2% Hispanic).

Clinton County's Native American/Other Population

57 residents of Clinton 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 Clinton County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Clinton County ranks 68th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's Native American/Other population has declined by an estimated 54.4%. Native American/Other residents' share of Clinton County's population has remained roughly unchanged at 0.3%.

Clinton County is less Native American/Other than neighboring DeKalb County (0.4% Native American/Other), Clay County (0.8% Native American/Other), Buchanan County (0.8% Native American/Other), Caldwell County (0.8% Native American/Other), and Platte County (0.9% Native American/Other).

Clinton County's Multiracial Population

906 residents of Clinton County, or 4.2% of the population, identify as Multiracial. The share of Multiracial residents in Clinton County is comparable to the share in Missouri overall, where 4.8% of the population is Multiracial. Clinton County ranks 53rd statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Clinton County's Multiracial population has declined by an estimated 9.9%. Multiracial residents' share of Clinton County's population has decreased from 4.7% to 4.2%.

Clinton County is more Multiracial than neighboring DeKalb County (3.1% Multiracial), and Caldwell County (3.3% Multiracial). Clinton County is less Multiracial than neighboring Clay County (4.8% Multiracial), Buchanan County (5.3% Multiracial), and Platte County (5.2% 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.