Hardin County Demographics
A map of Hardin County's Population by Race
Hardin County, Ohio has an estimated population of 30,475, a less than 1% change from the 30,696 recorded in the 2020 Census. The population is 92.7% White, 2.5% Multiracial, 2.4% Hispanic, 1.3% Black, 0.7% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Hardin County, with one dot drawn for each person counted by the Census, color-coded by race.
Hardin is about as racially diverse as it was in 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 Hardin County, that probability was 14.3% in 2020 and 14.0% in the most recent ACS estimates.
Hardin County is ranked the 72nd most populous county in Ohio, out of 88 counties. Hardin County was ranked the 72nd most populous county in the 2020 Census.
Hardin County's White Population
28,236 residents of Hardin County, or 92.7% of the population, identify as White. The share of White residents in Hardin County is significantly higher than in Ohio overall, where 75.8% of the population is White. Hardin County ranks 28th statewide in terms of White residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's White population has remained roughly the same. White residents' share of Hardin County's population has remained roughly unchanged at 92.7%.
Hardin County is more White than neighboring Logan County (91.5% White), Hancock County (86.9% White), Allen County (79% White), and Union County (84.5% White). Hardin County is less White than neighboring Wyandot County (94.1% White).
Hardin County's Black Population
385 residents of Hardin County, or 1.3% of the population, identify as Black. The share of Black residents in Hardin County is considerably lower than in Ohio overall, where 12% of the population is Black. Hardin County ranks 63rd statewide in terms of Black residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's Black population has grown by an estimated 50.4%. Black residents' share of Hardin County's population has increased from 0.8% to 1.3%.
Hardin County is more Black than neighboring Wyandot County (0.2% Black). Hardin County is less Black than neighboring Logan County (1.7% Black), Hancock County (1.8% Black), Allen County (9.6% Black), and Union County (2.3% Black).
Hardin County's Asian Population
228 residents of Hardin County, or 0.7% of the population, identify as Asian. The share of Asian residents in Hardin County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Hardin County ranks 38th statewide in terms of Asian residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's Asian population has grown by an estimated 34.9%. Asian residents' share of Hardin County's population has remained roughly unchanged at 0.7%.
Hardin County is more Asian than neighboring Logan County (0.5% Asian), and Wyandot County (0% Asian). Hardin County is less Asian than neighboring Hancock County (1.9% Asian), Allen County (0.9% Asian), and Union County (5% Asian).
Hardin County's Hispanic Population
732 residents of Hardin County, or 2.4% of the population, identify as Hispanic. The share of Hispanic residents in Hardin County is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Hardin County ranks 43rd statewide in terms of Hispanic residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's Hispanic population has grown by an estimated 5.0%. Hispanic residents' share of Hardin County's population has remained roughly unchanged at 2.4%.
Hardin County is less Hispanic than neighboring Hancock County (6.1% Hispanic), Wyandot County (3.1% Hispanic), Allen County (3.6% Hispanic), and Union County (3.4% Hispanic).
Hardin County's Native American/Other Population
119 residents of Hardin County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Hardin County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Hardin County ranks 66th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's Native American/Other population has declined by an estimated 4.8%. Native American/Other residents' share of Hardin County's population has remained roughly unchanged at 0.4%.
Hardin County is more Native American/Other than neighboring Logan County (0.3% Native American/Other), Hancock County (0.2% Native American/Other), and Wyandot County (0.2% Native American/Other). Hardin County is less Native American/Other than neighboring Allen County (0.6% Native American/Other), and Union County (0.6% Native American/Other).
Hardin County's Multiracial Population
775 residents of Hardin County, or 2.5% of the population, identify as Multiracial. The share of Multiracial residents in Hardin County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Hardin County ranks 58th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.
Since the 2020 Census, Hardin County's Multiracial population has declined by an estimated 26.9%. Multiracial residents' share of Hardin County's population has decreased from 3.5% to 2.5%.
Hardin County is more Multiracial than neighboring Wyandot County (2.4% Multiracial). Hardin County is less Multiracial than neighboring Logan County (3.7% Multiracial), Hancock County (3% Multiracial), Allen County (6.2% Multiracial), and Union County (4.2% 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.