Plainville, Ohio Demographics & Population 2026

A note before these figures: with a population of 100, Plainville's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Plainville is a small community located in Ohio, within Hamilton County. The total population is 100. It ranks as the 1217th most populous out of 1,264 Census-designated places in Ohio.

Age Demographics

The median age in Plainville is 64.0 years. This is 61% higher than the state median of 39.7 years. 29.0% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Plainville is $65,875. This is 8% lower than the state median of $71,389. It is also 18% lower than the national median of $80,734. The poverty rate stands at 36.0%. This is 171% higher than the state poverty rate of 13.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The survey records no unemployed residents in Plainville, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $483,300. Housing costs are 125% higher than the state median of $214,800. The home-value-to-income ratio of 7.3x suggests that housing affordability is a significant concern for many residents. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 49% higher than the state average of 67.2%.

Race & Ethnicity

Every resident counted in Plainville was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

63.9% of residents aged 25 and older hold a bachelor's degree or higher. This places Plainville in the top 10% of all cities in the state for educational attainment. This is 103% higher than the state rate of 31.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 78.3%. Notably, 25.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Plainville, Ohio is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Ohio state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,264 Census-designated places in Ohio. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.