Zip Code 45014 — Fairfield, OH

ZIP Code 45014 is associated with Fairfield, OH, in Butler County. The listed population estimate is 45,773; estimated density is 782.3 people per square mile. Among records with population estimates, it ranks #5 of 14 in Butler County and #36 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.328220, -84.552100)

Data MetricLocal Statistic
Postal / Zip Code45014
Primary CityFairfield
State / ProvinceOH
CountyButler
Total Population45,773
Population Density782.3 people/sq mi
TimezoneAmerica/New_York

How 45014 Compares

MetricZIP 45014Butler County recordsOH records
Population estimate45,773389,474 (sum)11,810,293 (sum)
Population Density782.3 /sq mi----
County population rank#5 of 14----
State population rank#36 of 1,215----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in OH

ZIP CodeCityDistancePopulation estimate
ZIP 45015Hamilton2.5 mi11,038
ZIP 45240Cincinnati3.3 mi29,600
ZIP 45218Cincinnati4.6 mi3,836
ZIP 45251Cincinnati4.7 mi20,254
ZIP 45246Cincinnati5.3 mi13,527

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →