Zip Code 45146 — Martinsville, OH

ZIP Code 45146 is associated with Martinsville, OH, in Clinton County. The listed population estimate is 1,324; estimated density is 19.7 people per square mile. Among records with population estimates, it ranks #7 of 9 in Clinton County and #877 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.315400, -83.799450)

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

How 45146 Compares

MetricZIP 45146Clinton County recordsOH records
Population estimate1,32446,780 (sum)11,810,293 (sum)
Population Density19.7 /sq mi----
County population rank#7 of 9----
State population rank#877 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 45148Midland4.9 mi1,592
ZIP 45159New Vienna6.0 mi3,588
ZIP 45142Lynchburg7.3 mi4,187
ZIP 45107Blanchester9.3 mi9,190
ZIP 45177Wilmington10.3 mi22,924

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 →