Adams County Demographics

A map of Adams County's Population by Race

Adams County, Ohio has an estimated population of 27,540, a less than 1% change from the 27,477 recorded in the 2020 Census. The population is 95.8% White, 2.2% Multiracial, 0.9% Hispanic, 0.5% Asian, 0.4% Black, and 0.3% Native American/Other. This demographic dot map shows the population of Adams County, with one dot drawn for each person counted by the Census, color-coded by race.

Adams has become slightly 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 Adams County, that probability was 9.1% in 2020 and 8.3% in the most recent ACS estimates.

Adams County is ranked the 78th most populous county in Ohio, out of 88 counties. Adams County was ranked the 78th most populous county in the 2020 Census.

Adams County's White Population

26,370 residents of Adams County, or 95.8% of the population, identify as White. The share of White residents in Adams County is significantly higher than in Ohio overall, where 75.8% of the population is White. Adams County ranks 5th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's White population has remained roughly the same. White residents' share of Adams County's population has increased from 95.3% to 95.8%.

Adams County is more White than neighboring Highland County (94.4% White), Brown County (94.7% White), Mason County (86.9% White), and Pike County (94.4% White). Adams County is less White than neighboring Lewis County (96.9% White).

Adams County's Black Population

110 residents of Adams County, or 0.4% of the population, identify as Black. The share of Black residents in Adams County is considerably lower than in Ohio overall, where 12% of the population is Black. Adams County ranks 84th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's Black population has grown by an estimated 31.0%. Black residents' share of Adams County's population has remained roughly unchanged at 0.4%.

Adams County is less Black than neighboring Lewis County (0.5% Black), Highland County (1.2% Black), Brown County (0.6% Black), Mason County (5.9% Black), and Pike County (1% Black).

Adams County's Asian Population

132 residents of Adams County, or 0.5% of the population, identify as Asian. The share of Asian residents in Adams County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Adams County ranks 87th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's Asian population has grown by an estimated 238.5%. Asian residents' share of Adams County's population has remained roughly unchanged at 0.5%.

Adams County is more Asian than neighboring Lewis County (0.2% Asian), Highland County (0.1% Asian), Brown County (0.3% Asian), and Pike County (0.4% Asian). Adams County is less Asian than neighboring Mason County (0.9% Asian).

Adams County's Hispanic Population

257 residents of Adams County, or 0.9% of the population, identify as Hispanic. The share of Hispanic residents in Adams County is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Adams County ranks 84th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's Hispanic population has grown by an estimated 18.4%. Hispanic residents' share of Adams County's population has remained roughly unchanged at 0.9%.

Adams County is more Hispanic than neighboring Lewis County (0.1% Hispanic), and Pike County (0.6% Hispanic). Adams County is less Hispanic than neighboring Highland County (1.2% Hispanic), Brown County (1.3% Hispanic), and Mason County (2.4% Hispanic).

Adams County's Native American/Other Population

78 residents of Adams 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 Adams County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Adams County ranks 69th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's Native American/Other population has declined by an estimated 27.8%. Native American/Other residents' share of Adams County's population has remained roughly unchanged at 0.3%.

Adams County is more Native American/Other than neighboring Highland County (0.2% Native American/Other), Brown County (0.1% Native American/Other), and Mason County (0.2% Native American/Other). Adams County is less Native American/Other than neighboring Lewis County (0.4% Native American/Other), and Pike County (0.7% Native American/Other).

Adams County's Multiracial Population

593 residents of Adams County, or 2.2% of the population, identify as Multiracial. The share of Multiracial residents in Adams County is slightly lower than in Ohio overall, where 4.3% of the population is Multiracial. Adams County ranks 72nd statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Adams County's Multiracial population has declined by an estimated 29.7%. Multiracial residents' share of Adams County's population has decreased from 3.1% to 2.2%.

Adams County is more Multiracial than neighboring Lewis County (1.9% Multiracial). Adams County is less Multiracial than neighboring Highland County (2.9% Multiracial), Brown County (3% Multiracial), Mason County (3.7% Multiracial), and Pike County (3% 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.