Gallia County Demographics

A map of Gallia County's Population by Race

Gallia County, Ohio has an estimated population of 29,068, a less than 1% change from the 29,220 recorded in the 2020 Census. The population is 92.6% White, 2.5% Multiracial, 2.0% Black, 1.1% Hispanic, 1.1% Native American/Other, and 0.8% Asian. This demographic dot map shows the population of Gallia County, with one dot drawn for each person counted by the Census, color-coded by race.

Gallia 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 Gallia County, that probability was 14.7% in 2020 and 14.1% in the most recent ACS estimates.

Gallia County is ranked the 73rd most populous county in Ohio, out of 88 counties. Gallia County was ranked the 73rd most populous county in the 2020 Census.

Gallia County's White Population

26,915 residents of Gallia County, or 92.6% of the population, identify as White. The share of White residents in Gallia County is significantly higher than in Ohio overall, where 75.8% of the population is White. Gallia County ranks 29th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's White population has remained roughly the same. White residents' share of Gallia County's population has remained roughly unchanged at 92.6%.

Gallia County is more White than neighboring Cabell County (88.8% White). Gallia County is less White than neighboring Mason County (95.4% White), Lawrence County (93.8% White), Jackson County (95.3% White), and Meigs County (95.8% White).

Gallia County's Black Population

576 residents of Gallia County, or 2.0% of the population, identify as Black. The share of Black residents in Gallia County is lower than in Ohio overall, where 12% of the population is Black. Gallia County ranks 40th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's Black population has declined by an estimated 3.5%. Black residents' share of Gallia County's population has remained roughly unchanged at 2.0%.

Gallia County is more Black than neighboring Mason County (1% Black), Lawrence County (1.7% Black), Jackson County (0.8% Black), and Meigs County (0.9% Black). Gallia County is less Black than neighboring Cabell County (4.1% Black).

Gallia County's Asian Population

237 residents of Gallia County, or 0.8% of the population, identify as Asian. The share of Asian residents in Gallia County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Gallia County ranks 45th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's Asian population has grown by an estimated 60.1%. Asian residents' share of Gallia County's population has remained roughly unchanged at 0.8%.

Gallia County is more Asian than neighboring Mason County (0.4% Asian), Lawrence County (0.6% Asian), Jackson County (0.5% Asian), and Meigs County (0.3% Asian). Gallia County is less Asian than neighboring Cabell County (1.2% Asian).

Gallia County's Hispanic Population

308 residents of Gallia County, or 1.1% of the population, identify as Hispanic. The share of Hispanic residents in Gallia County is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Gallia County ranks 81st statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's Hispanic population has grown by an estimated 17.6%. Hispanic residents' share of Gallia County's population has remained roughly unchanged at 1.1%.

Gallia County is more Hispanic than neighboring Mason County (0.6% Hispanic), Jackson County (1% Hispanic), and Meigs County (0.5% Hispanic). Gallia County is less Hispanic than neighboring Cabell County (1.8% Hispanic).

Gallia County's Native American/Other Population

316 residents of Gallia County, or 1.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Gallia County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Gallia County ranks 43rd statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's Native American/Other population has grown by an estimated 127.3%. Native American/Other residents' share of Gallia County's population has increased from 0.5% to 1.1%.

Gallia County is more Native American/Other than neighboring Mason County (0.3% Native American/Other), Lawrence County (0.3% Native American/Other), Jackson County (0.3% Native American/Other), Meigs County (0.2% Native American/Other), and Cabell County (0.3% Native American/Other).

Gallia County's Multiracial Population

716 residents of Gallia County, or 2.5% of the population, identify as Multiracial. The share of Multiracial residents in Gallia County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Gallia County ranks 39th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Gallia County's Multiracial population has declined by an estimated 36.0%. Multiracial residents' share of Gallia County's population has decreased from 3.8% to 2.5%.

Gallia County is more Multiracial than neighboring Mason County (2.3% Multiracial), Jackson County (2% Multiracial), and Meigs County (2.4% Multiracial). Gallia County is less Multiracial than neighboring Cabell County (3.9% 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.