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Union County, Ohio Demographics 2026

Union County, Ohio has a population of 67,324, the 36th most populous county in Ohio. The median household income is $112,322 and the median home value is $344,900. The poverty rate is 5.0%.

Union County Quick Facts

Population 67,324
Median Household Income $112,322
Median Home Value $344,900
Poverty Rate 5.0%
Unemployment Rate 2.6%
Median Age 38.5 years
Homeownership Rate 79.2%
Affordability Ratio 3.1x
Bachelor's Degree+ 39.2%
High School Graduation 95.8%
Cities/Places 8
Population 67,324 36th of 88
Median Income $112,322 57% higher than state
Poverty Rate 5.0%
Unemployment 2.6%

How Union County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric2019–20232020–2024Change
Population65,29367,324+3.1%
Median household income$109,506$112,322+2.6%
Median home value$306,600$344,900+12.5%

Median Household Income

Union
$112,322
OH
$71,389
National
$80,734

Median Home Value

Union
$344,900
OH
$214,800
National
$332,700

Economy & Housing

Household Income Distribution

Under $25K 6.7%
$25K-$50K 11.4%
$50K-$100K 26.1%
$100K+ 55.8%
Detailed income brackets
Under $10K
2.4%
$10K-$15K
1.0%
$15K-$20K
1.7%
$20K-$25K
1.7%
$25K-$30K
1.4%
$30K-$35K
1.8%
$35K-$40K
2.1%
$40K-$45K
4.1%
$45K-$50K
2.1%
$50K-$60K
5.8%
$60K-$75K
8.2%
$75K-$100K
12.0%
$100K-$125K
12.1%
$125K-$150K
12.0%
$150K-$200K
14.4%
$200K+
17.3%

Employment

2.6% Unemployment Rate State: 4.8%|National: 5.2%
68.4% Labor Force Participation

Housing Overview

Owner 79.2%
Renter 20.8%
Affordability Index Affordable
3.1x home value to income ratio
Median gross rent $1,247/mo 13.3% of median household income annually

People & Demographics

Age Distribution

Under 18
24.1%
18-34
20.6%
35-54
29.8%
55-74
20.5%
75+
5.0%

Race & Ethnicity

  • White: 84.5%
  • Black: 2.3%
  • Hispanic: 3.4%
  • Asian: 5.0%
  • Other: 0.5%

Diversity Index

28out of 100
Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 41 | National average: 61

Education

Educational Attainment (Adults 25+)

  • < HS: 4.2%
  • HS Diploma: 29.5%
  • Some College: 18.9%
  • Associate's: 8.2%
  • Bachelor's: 25.5%
  • Graduate+: 13.7%

Cities & Places in Union County

CityPopulationMedian IncomePovertyHome Value
Marysville27,518$92,6196.7%$300,800
Plain City3,829$117,9723.5%$368,500
Richwood2,332$64,00713.1%$180,300
New California1,672$161,9080.0%$464,500
Milford Center770$93,1252.5%$197,100
Raymond415$118,95027.7%$325,800
Magnetic Springs359$77,81317.8%$137,500
Unionville Center269$104,5453.7%$182,500

Explore Ohio Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Union County is located in Ohio with a total population of 67,324. It is the 36th most populous county out of 88 in Ohio. The county encompasses 8 Census-designated places.

Age Demographics

The median age in Union County is 38.5 years. This is 3% lower than the state median of 39.7 years.

Economy, Income & Housing

The median household income in Union County is $112,322. This is 57% higher than the state median of $71,389. It is also 39% higher than the national median of $80,734. The poverty rate stands at 5.0%. This is 62% lower than the state poverty rate of 13.3%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.6%. This is 46% lower than the state rate of 4.8%. The median home value is $344,900. Housing costs are 61% higher than the state median of $214,800. The home-value-to-income ratio is 3.1x. 79.2% of occupied housing units are owner-occupied. This homeownership rate is 18% higher than the state average of 67.2%.

Race & Ethnicity

The largest racial or ethnic group in Union County is White (non-Hispanic), making up 84.5% of the population. Asian residents account for 5.0%. The Black or African American population (2.3%) is well below the state average of 12.0%. The Asian population is significantly higher than the state average (5.0% vs 2.5%).

Education

39.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Union County in the top 10% of all counties in the state for educational attainment. This is 24% 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 95.8%.

Data Sources & Methodology

All figures for Union County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Ohio and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Union County, Ohio?

Union County has a population of 67,324, making it the 36th most populous county in Ohio.

What is the median income in Union County?

The median household income in Union County is $112,322 with a poverty rate of 5.0%.

How many cities are in Union County, Ohio?

Union County contains 8 Census-designated places.