ZIP Codes of Fairfield County, OH

Population & People
Population & People
Total Population
146,974
Household Income
Household Income
Median Income
$88,501
Housing
Housing
Total Housing Units
57,881
Business & Economy
Business & Economy
Total Businesses
2,594
Employment
Employment
Employment Rate
60.86%
Education
Education
Bachelor's Degree+
31.80%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 13 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:13 ZIP Codes (12 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:220 / 380 / 614 / 740
Timezone:Eastern (GMT -05:00)
Local Time:2:13:19 PM
Population:146,974 [See All]
FIPS:39045
CBSA:Columbus, OH
Land Area:513 sq mi
Water Area:4 sq mi
Coordinates:39.7672, -82.6154
Quick Link:
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Wide geographic spread
ZIPs range from 163.9 sq mi down to 1.61 — a 102× sprawl ratio.
Striking education divide
Bachelor's share spans 16.1% to 48.9% — a 33-point gap.

Standout ZIPs in this County


Most Populous
Lancaster · 62,933 people
42.8% of county total
Highest Income
Pickerington · $126,534 median
1.4× county average
Largest Land Area
Lancaster · 163.9 sq mi
Spans the most ground
Fastest Growth
Pickerington · 19.9% (10-yr)
39,171 → 46,963 residents
Most Educated
Pickerington · 48.9% bachelor's+
14,908 of 30,514 adults 25+

Things worth knowing about Fairfield County


146,974 residents live across 13 ZIPs covering 513 sq mi, served by 13 distinct USPS-recognized cities.

Population moved from 134,912 to 146,974 from 2014 to 2024 — a +8.9% change. 9 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 43147 (Pickerington, $126,534 median) and poorest ZIP 43148 (Pleasantville, $72,072) are 14.4 miles apart — a 1.8× income gap across local geography.

Median home values vary 1.5× across this county — from $230,000 in 43130 (Lancaster) to $348,300 in 43147 (Pickerington).

Density varies 24× across the county — from 64 people/sq mi in 43102 (Amanda) to 1,558 in 43147 (Pickerington).

Educational attainment ranges from 16.1% bachelor's+ in 43107 (Bremen) to 48.9% in 43147 (Pickerington) — the breadth of educational profiles across the area.

Within Ohio, this is the #20 most populous of 88 counties and ranks #11 for median household income with the #6 fastest decade growth .

Weighted by population, the typical household earns about $94,097 across the county — reflecting what a typical resident sees, not a simple ZIP average.

31.8% of adults age 25+ hold a bachelor's degree or higher (31,904 of 100,338 reporting).

12 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Fairfield County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
43130LancasterStandard62,933$72,153163.95.0%
43147PickeringtonStandard46,963$126,53430.119.9%
43105BaltimoreStandard8,982$98,58356.23.9%
43112CarrollStandard4,909$91,61335.919.8%
43107BremenStandard3,791$78,48231.611.2%
43102AmandaStandard3,711$90,78158.2-19.7%
43154StoutsvilleStandard3,367$91,25026.40.0%
43046MillersportStandard2,946$86,86427.6-20.3%
43155Sugar GroveStandard2,361$90,33728.412.1%
43150RushvilleStandard2,300$75,28425.9-3.4%
43136LithopolisStandard2,216$114,3751.6374.5%
43148PleasantvilleStandard1,898$72,07227.2-24.6%
43157ThurstonPO Box597$62,1880.316.6%

Adjacent & Nearby Counties