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.
Fairfield County, OH Climate
Fairfield County, OH has an average annual temperature of 10.9°C (52°F) and receives about 982 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.9°C
Avg Temp
982
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 27° | 59 mm |
| February | -1° / 30° | 57 mm |
| March | 5° / 41° | 82 mm |
| April | 10° / 51° | 88 mm |
| May | 16° / 61° | 109 mm |
| June | 21° / 69° | 94 mm |
| July | 23° / 73° | 105 mm |
| August | 22° / 72° | 98 mm |
| September | 19° / 65° | 75 mm |
| October | 12° / 54° | 62 mm |
| November | 6° / 43° | 80 mm |
| December | 1° / 33° | 73 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Fairfield County, OH
The most comfortable months to visit Fairfield County, OH are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -7°C low). May is usually the wettest month.
Where to stay near Fairfield County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.