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Zip Code 45843 — Forest, OH

45843 is a ZIP Code associated with Forest, OH, located within Hardin. The postal region supports an estimated population of 4,184 residents across Data Pending housing units, with a population density of 16.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.782020, -83.535130)

Data MetricLocal Statistic
Postal / Zip Code45843
Primary CityForest
State / ProvinceOH
CountyHardin
Total Population4,184
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density16.0 people/sq mi
TimezoneAmerica/New_York

How 45843 Compares

MetricZIP 45843Hardin CountyOH State Average
Population4,18434,15711,810,293
Median IncomeData PendingN/AN/A
Population Density16.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45836Dunkirk5.7 mi1,573N/A
Zip 43330Kirby6.4 mi100N/A
Zip 45897Williamstown7.3 mi115N/A
Zip 43359Wharton7.4 mi748N/A
Zip 45867Mount Blanchard8.0 mi978N/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 →