Zip Code 45050 — Monroe, OH

ZIP Code 45050 is associated with Monroe, OH, in Butler County. The listed population estimate is 12,248; estimated density is 561.2 people per square mile. Among records with population estimates, it ranks #9 of 14 in Butler County and #342 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.444370, -84.365940)

Data MetricLocal Statistic
Postal / Zip Code45050
Primary CityMonroe
State / ProvinceOH
CountyButler
Total Population12,248
Population Density561.2 people/sq mi
TimezoneAmerica/New_York

How 45050 Compares

MetricZIP 45050Butler County recordsOH records
Population estimate12,248389,474 (sum)11,810,293 (sum)
Population Density561.2 /sq mi----
County population rank#9 of 14----
State population rank#342 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 45044Middletown0.8 mi56,217
ZIP 45067Trenton6.8 mi15,471
ZIP 45005Franklin7.1 mi32,251
ZIP 45040Mason7.2 mi59,518
ZIP 45011Hamilton7.3 mi75,864

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 →