Harrison County Demographics

A map of Harrison County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	7,684	7,618	93.8%	93.4%
Multiracial	249	273	3.0%	3.3%
Asian	99	23	1.2%	0.3%
Hispanic	68	168	0.8%	2.1%
Black	64	32	0.8%	0.4%
Native American/Other	26	43	0.3%	0.5%

Harrison County, Missouri has an estimated population of 8,190, a less than 1% change from the 8,157 recorded in the 2020 Census. The population is 93.8% White, 3.0% Multiracial, 1.2% Asian, 0.8% Black, 0.8% Hispanic, and 0.3% Native American/Other. This demographic dot map shows the population of Harrison County, with one dot drawn for each person counted by the Census, color-coded by race.

Harrison has become slightly 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 Harrison County, that probability was 12.6% in 2020 and 11.8% in the most recent ACS estimates.

Harrison County is ranked the 98th most populous county in Missouri, out of 115 counties. Harrison County was ranked the 98th most populous county in the 2020 Census.

Harrison County's White Population

7,684 residents of Harrison County, or 93.8% of the population, identify as White. The share of White residents in Harrison County is significantly higher than in Missouri overall, where 76.3% of the population is White. Harrison County ranks 16th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's White population has remained roughly the same. White residents' share of Harrison County's population has remained roughly unchanged at 93.8%.

Harrison County is more White than neighboring Mercer County (91.1% White), Decatur County (90.2% White), and Gentry County (93.4% White). Harrison County is less White than neighboring Daviess County (95.1% White), and Worth County (95.2% White).

Harrison County's Black Population

64 residents of Harrison County, or 0.8% of the population, identify as Black. The share of Black residents in Harrison County is considerably lower than in Missouri overall, where 10.9% of the population is Black. Harrison County ranks 86th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's Black population has grown by an estimated 100.0%. Black residents' share of Harrison County's population has remained roughly unchanged at 0.8%.

Harrison County is more Black than neighboring Mercer County (0.2% Black), Gentry County (0.4% Black), and Worth County (0.1% Black). Harrison County is less Black than neighboring Daviess County (1% Black), and Decatur County (1.3% Black).

Harrison County's Asian Population

99 residents of Harrison County, or 1.2% of the population, identify as Asian. The share of Asian residents in Harrison County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Harrison County ranks 76th statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's Asian population has grown by an estimated 330.4%. Asian residents' share of Harrison County's population has increased from 0.3% to 1.2%.

Harrison County is more Asian than neighboring Daviess County (0.2% Asian), Mercer County (0.9% Asian), Decatur County (0.7% Asian), Gentry County (0.7% Asian), and Worth County (0% Asian).

Harrison County's Hispanic Population

68 residents of Harrison County, or 0.8% of the population, identify as Hispanic. The share of Hispanic residents in Harrison County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Harrison County ranks 62nd statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's Hispanic population has declined by an estimated 59.5%. Hispanic residents' share of Harrison County's population has decreased from 2.1% to 0.8%.

Harrison County is more Hispanic than neighboring Worth County (0.6% Hispanic). Harrison County is less Hispanic than neighboring Daviess County (1.8% Hispanic), Mercer County (4.8% Hispanic), Decatur County (3.5% Hispanic), and Gentry County (2% Hispanic).

Harrison County's Native American/Other Population

26 residents of Harrison 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 Harrison County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Harrison County ranks 79th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's Native American/Other population has declined by an estimated 39.5%. Native American/Other residents' share of Harrison County's population has remained roughly unchanged at 0.3%.

Harrison County is more Native American/Other than neighboring Daviess County (0.2% Native American/Other), Gentry County (0.2% Native American/Other), and Worth County (0.2% Native American/Other). Harrison County is less Native American/Other than neighboring Mercer County (0.4% Native American/Other), and Decatur County (0.8% Native American/Other).

Harrison County's Multiracial Population

249 residents of Harrison County, or 3.0% of the population, identify as Multiracial. The share of Multiracial residents in Harrison County is comparable to the share in Missouri overall, where 4.8% of the population is Multiracial. Harrison County ranks 95th statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Harrison County's Multiracial population has declined by an estimated 8.8%. Multiracial residents' share of Harrison County's population has remained roughly unchanged at 3.0%.

Harrison County is more Multiracial than neighboring Daviess County (1.7% Multiracial), and Mercer County (2.6% Multiracial). Harrison County is less Multiracial than neighboring Decatur County (3.4% Multiracial), Gentry County (3.4% Multiracial), and Worth County (3.8% 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.