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Zip Code 45042 — Middletown, OH

45042 is a ZIP Code associated with Middletown, OH, located within Butler. The postal region supports an estimated population of 27,652 residents across Data Pending housing units, with a population density of 217.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.548670, -84.437550)

Data MetricLocal Statistic
Postal / Zip Code45042
Primary CityMiddletown
State / ProvinceOH
CountyButler
Total Population27,652
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density217.1 people/sq mi
TimezoneAmerica/New_York

How 45042 Compares

MetricZIP 45042Butler CountyOH State Average
Population27,652389,47411,810,293
Median IncomeData PendingN/AN/A
Population Density217.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45067Trenton4.6 mi15,471N/A
Zip 45327Germantown6.2 mi9,315N/A
Zip 45070West Elkton7.0 mi142N/A
Zip 45005Franklin7.3 mi32,251N/A
Zip 45055Overpeck7.4 mi198N/A

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 →