Ottawa County
Ottawa County has roughly average household income, with a median household income of $76,101. Population has held roughly steady since 2000. Median home value has more than doubled since 2000, reaching $219,900. With a median age of 50.6, the population is older than the US median of 38.9. It sits in the top 10% of US counties for household income.
Population & growth
PEP 2025 EST:39,481 residents (Census Bureau Vintage 2025, released March 2026)
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How many people live in Ottawa County, Ohio?
Ottawa County, Ohio has about 39,994 residents according to the 2024 American Community Survey.
What is the median household income in Ottawa County, Ohio?
The typical household in Ottawa County, Ohio earns about $76,101 a year. Half of households make more than that, and half make less.
Is Ottawa County, Ohio expensive?
In Ottawa County, Ohio, the median home is worth about $219,900, and the typical rent is about $930 a month.
How educated are people in Ottawa County, Ohio?
About 29.5% of adults age 25 and over in Ottawa County, Ohio hold a bachelor's degree or higher.
What is the poverty rate in Ottawa County, Ohio?
About 8.4% of people in Ottawa County, Ohio live below the federal poverty line.
Has Ottawa County, Ohio grown since 1990?
Yes, Ottawa County, Ohio has shrunk since 1990. The population has lost about 35 residents, a change of about -0 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024