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Zip Code 45146 — Martinsville, OH

45146 is a ZIP Code associated with Martinsville, OH, located within Clinton. 45146 ranks #7 out of 9 ZIP codes in Clinton County by population (and #877 out of 1,232 in OH). The area supports an estimated population of 1,324 residents across Data Pending housing units, with a population density of 19.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.315400, -83.799450)

Data MetricLocal Statistic
Postal / Zip Code45146
Primary CityMartinsville
State / ProvinceOH
CountyClinton
Total Population1,324
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density19.7 people/sq mi
TimezoneAmerica/New_York

How 45146 Compares

MetricZIP 45146Clinton CountyOH State Average
Population1,32446,780 (Total)11,810,293 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density19.7 /sq mi----
County Pop Rank#7 of 9----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45148Midland4.9 mi1,592N/A
Zip 45159New Vienna6.0 mi3,588N/A
Zip 45142Lynchburg7.3 mi4,187N/A
Zip 45107Blanchester9.3 mi9,190N/A
Zip 45177Wilmington10.3 mi22,924N/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 →