Alger is a village in Hardin County, Ohio, home to about 718 people across 0.3 square miles. Its ZIP code is 45812.
Homes sold for a median of $105 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Alger; also McGuffey
Each card is that ZIP code’s whole market, including any part outside Alger. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | John Glenn Columbus International Airport (CMH)69 miles away |
|---|---|
| Closer regional airport | James M. Cox Dayton International Airport (DAY)59 miles away |
| Nearest city of 250,000+ | Columbus, OH66 miles away |
| Nearest city of 1 million+ | Chicago, IL215 miles away |
Straight-line distances from the center of Alger; 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.
Alger had 837 residents in the 2020 census, down 6% since 2000.
It’s the 777th largest of 1,264 towns in Ohio by population.
Hardin County grew from 31,187 residents in 1900 to 30,696 in 2020.
Hardin 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 20°F. About 36 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Lima Allen Co Ap, OH weather station (11 miles away).
6,502 jobs at 421 businesses in Hardin 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.
Grocery stores
Pharmacies
Libraries
Theaters and performance venues
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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Shares ZIP codes with McGuffey.
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.