Ottawa County Demographics

A map of Ottawa County's Population by Race

Ottawa County, Ohio had a population of 40,364 in 2020. It was 90.3% White, 0.8% Black, 0.4% Asian, 5.1% Hispanic, 0.4% Native American/Other, and 3.1% Multiracial. This map presents the population of Ottawa County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Ottawa County is the 62nd most populous county of the 88 counties in Ohio.

Ottawa County's White Population

36,436 residents of Ottawa County identify as White, or 90.3%. This makes the White share of the population of Ottawa County larger than the White share of the population of Ohio (75.9% White). Of the 88 counties in Ohio, Ottawa County is ranked #45 in terms of White residents as a share of the population.

Ottawa County is more White than neighboring Sandusky County (81.9% White), Lucas County (66% White), Erie County (80.7% White), Seneca County (87.6% White), and Monroe County (87.4% White).

Ottawa County's Black Population

335 residents of Ottawa County identify as Black, or 0.8%. This makes the Black share of the population of Ottawa County slightly less than the Black share of the population of Ohio (12.3% Black). Of the 88 counties in Ohio, Ottawa County is ranked #64 in terms of Black residents as a share of the population.

Ottawa County is less Black than neighboring Sandusky County (3% Black), Lucas County (19.3% Black), Erie County (8.8% Black), Seneca County (2.4% Black), and Monroe County (2.6% Black).

Ottawa County's Asian Population

157 residents of Ottawa County identify as Asian, or 0.4%. This makes the Asian share of the population of Ottawa County roughly similar to the Asian share of the population of Ohio (2.5% Asian). Of the 88 counties in Ohio, Ottawa County is ranked #54 in terms of Asian residents as a share of the population.

Ottawa County is more Asian than neighboring Sandusky County (0.3% Asian). Ottawa County is less Asian than neighboring Lucas County (1.6% Asian), Erie County (0.6% Asian), Seneca County (0.7% Asian), and Monroe County (0.6% Asian).

Ottawa County's Hispanic Population

2,059 residents of Ottawa County identify as Hispanic, or 5.1%. This makes the Hispanic share of the population of Ottawa County roughly similar to the Hispanic share of the population of Ohio (4.4% Hispanic). Of the 88 counties in Ohio, Ottawa County is ranked #17 in terms of Hispanic residents as a share of the population.

Ottawa County is more Hispanic than neighboring Erie County (4.1% Hispanic), and Monroe County (4% Hispanic). Ottawa County is less Hispanic than neighboring Sandusky County (10.3% Hispanic), Lucas County (7.5% Hispanic), and Seneca County (5.3% Hispanic).

Ottawa County's Native American/Other Population

145 residents of Ottawa County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.4%. This makes the Native American/Other share of the population of Ottawa County roughly similar to the Native American/Other share of the population of Ohio (0.6% Native American/Other). Of the 88 counties in Ohio, Ottawa County is ranked #74 in terms of Native American/Other residents as a share of the population.

Ottawa County is less Native American/Other than neighboring Lucas County (0.7% Native American/Other), Erie County (0.5% Native American/Other), Seneca County (0.5% Native American/Other), and Monroe County (0.6% Native American/Other).

Ottawa County's Multiracial Population

1,232 residents of Ottawa County identify as Multiracial, or 3.1%. This makes the Multiracial share of the population of Ottawa County roughly similar to the Multiracial share of the population of Ohio (4.3% Multiracial). Of the 88 counties in Ohio, Ottawa County is ranked #73 in terms of Multiracial residents as a share of the population.

Ottawa County is less Multiracial than neighboring Sandusky County (4.1% Multiracial), Lucas County (4.9% Multiracial), Erie County (5.2% Multiracial), Seneca County (3.7% Multiracial), and Monroe County (4.7% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.