Martinsville is a village in Clinton County, Ohio, home to about 352 people across 0.4 square miles. Its ZIP code is 45146.
Homes sold for a median of $147 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Martinsville. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Cincinnati Northern Kentucky International Airport (CVG)50 miles away |
|---|---|
| Closer regional airport | Cincinnati Municipal Airport Lunken Field (LUK)36 miles away |
| Nearest city of 250,000+ | Cincinnati, OH40 miles away |
| Nearest city of 1 million+ | Chicago, IL268 miles away |
Straight-line distances from the center of Martinsville; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Martinsville had 416 residents in the 2020 census, down 5% since 2000.
It’s the 973rd largest of 1,264 towns in Ohio by population.
Clinton County grew from 24,202 residents in 1900 to 42,018 in 2020.
Clinton County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 21°F. About 42.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Cincinnati, OH weather station (8 miles away).
17,384 jobs at 712 businesses in Clinton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Libraries
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.