Fairfield County, Ohio Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 20th-largest in Ohio
The population of Fairfield County, Ohio is 161,289 as of the 2023 American Community Survey, making it the 20th-largest county in Ohio. The median household income is $87,069, the median home value is $272,200, and the median age is 39.5.
The population of Fairfield County has grown 14.6% since 2010 (146,408 → 167,762), a +0.98% annualized rate.
161,289
Population
+0.98%
Annual growth
320
People / sq mi
$87,069
Median Income
$272,200
Median Home Value
Fairfield County covers 504 sq mi of land at 319.8 people per square mile.
About Fairfield County, OH
What sets Fairfield County apart is money: median household income runs $87,069, above the US median of $78,538. With 161,289 residents, Fairfield County is a county in Ohio. It ranks #20 among counties in Ohio by population.
Income is a real outlier — the median household pulls in $87,069, putting Fairfield County near the top of US counties. The poverty rate, 5.2%, is on the lower side for US counties and below the national 12.4%. A typical home is worth $272,200, with typical rent around $1,114.
About 31.9% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 12.2% of workers primarily work from home, below the national 14.0%, and the average commute runs about 28 minutes each way.
Taken together, the income and housing figures place Fairfield County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Fairfield County Population History (2010-2024)
The county of Fairfield County had a population of 146,408 in 2010 and 167,762 in 2024, a 14.6% growth over 14 years. The peak was 167,762 in 2024. Average annual growth rate: 0.98%.
167,762
Population (2024)
146,408
Population (2010)
167,762
Peak (2024)
0.98%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 146,408 |
| 2011 | 147,180 |
| 2012 | 147,314 |
| 2013 | 148,820 |
| 2014 | 150,400 |
| 2015 | 151,310 |
| 2016 | 152,829 |
| 2017 | 154,718 |
| 2018 | 156,062 |
| 2019 | 157,703 |
| 2020 | 159,464 |
| 2021 | 161,245 |
| 2022 | 163,166 |
| 2023 | 165,630 |
| 2024 | 167,762 |
Race & Ethnicity
| White | 82.6% |
| Black or African American | 8.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
39.5
Median Age
50.0%
Female
50.0%
Male
16.4%
Age 65+
Age Distribution
Children (under 15): 19.5% · Seniors (65+): 16.4%
Income & Poverty
| Median household income | $87,069+$17,389 vs state |
| Mean household income | $106,689 |
| Per-capita income | $40,561 |
| Poverty rate | 5.2%-4.0% vs state |
| Unemployment rate | 2.3% |
| Employment-to-population | 61.8% |
Top Industries by Employment
The largest employment sector in Fairfield County is professional & business services, accounting for 23.8% of workers.
How residents commute
0.2%
Drive alone
1.2%
Carpool
78.6%
Public transit
12.2%
Work from home
27.7 min
Avg commute
Housing
$272,200+$73,000 vs state
Median home value
$1,114
Median rent
74.2%
Homeownership rate
63,397
Total housing units
94.6%
Occupied
5.4%
Vacant
25.8%
Renter-occupied
Social & access
93.7%
With health insurance
95.7%
With broadband internet
17.9%
Foreign-born
7.4%
Veterans (18+)
13.8%
With a disability
95.1%
Speak language other than English at home
Education
94.0%
High School+
31.9%
Bachelor's+
Largest cities in Ohio
Other counties in Ohio
Part of Ohio
Metro areas in Ohio
County rankings
Frequently Asked Questions
Fairfield County, Ohio has a population of 161,289 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 20th-largest county in Ohio. Population density is 320 people per square mile.
The population of Fairfield County has grown 14.6% since 2010 (146,408 → 167,762), a +0.98% annualized rate.
The median household income in Fairfield County, Ohio is $87,069, with mean (average) household income of $106,689 and per-capita income of $40,561. 5.2% of residents live below the federal poverty level.
In Fairfield County, the largest racial and ethnic groups are White (82.6%), Black or African American (8.9%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Fairfield County, Ohio is 39.5 years. Residents are 50.0% female and 50.0% male.
The median home value in Fairfield County is $272,200 and median monthly rent is $1,114. 74.2% of occupied housing units are owner-occupied. The county has 63,397 total housing units, 5.4% of which are vacant.
The largest employment sector in Fairfield County, Ohio is professional, scientific, and management services, employing 23.8% of workers. The unemployment rate is 2.3%.
Columbus is among the largest cities associated with Fairfield County, Ohio, with a population of 906,480.
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Statewide data for Ohio
Population, race, income, age, and trends across Ohio
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.