Data Last Updated: July 1, 2021

ZIP Codes for City of Fairfield, OH

Fairfield, OH Covers 3 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
45018P.O. BoxButler0513

Timezone(s):Eastern (GMT -05:00)
Counties:BUTLER, OH
Population:42,510 (More Details)
Male Population:20,478
Female Population:22,032
Median Age:38
ZIP Codes:3
Area Codes:1
Total Area:470 square miles (county)
Land Area:467 square miles (county)
Water Area:3 square miles (county)

Fairfield, OH Demographic Information *

Total population42,510
Male population20,478
Female population22,032
Median age (years)38.3
White Population33,586
Black Population5,457
Indian Population112
Asian Population1,032
Hawaiian Population30
Hispanic Population2,357
Median age (Male)36.8
Median age (Female)39.7
Total households17,415
Family households (families)11,372
Average household size2.41
Average family size2.97
Total housing units18,803
* Demographic data is based on 2010 Census.

Fairfield, OH Other Information

103 Cities within 30 miles of Fairfield, OH Products


  1. U.S. Postal Service,
  2. Internal Data Creation [Last Updated: 7/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],