ZIP code · Forest · Ohio · United States

ZIP code 45843 — Forest

ZIP code 45843 serves Forest, Ohio.

Postal code
45843
Single source Value from one source, not cross-checked.
City
Forest
County
Hardin FIPS 39065
State
Ohio
Country
United States
Coordinates
40.7816, -83.5351 — precision precise (locality)
View on OpenStreetMap
Population
3,908 (ZCTA, ACS 5-year)
Population density
39 / sq mi
Land area
100.8 sq mi (261.1 km²) (ZCTA, ACS 5-year)
Median household income
$68,438
Per-capita income
$29,982
Median age
41.8
Households
1,564
Housing units
1,650
Median home value
$150,900
Median gross rent
$855 / month
Congressional districts
OH-4 (also OH-5) (119th Congress)
USDA hardiness zone
6a (-10 to -5 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
419, 567
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 84°F), coldest Jan (avg low 18°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F333647607281848377645038
Avg low °F182129395060646254433324
Precip in2.62.52.83.73.73.93.43.63.12.62.92.8

NOAA 1991–2020 climate normals from the nearest station: KENTON (9.9 mi) · NOAA NCEI

Places in ZIP 45843

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page