Forest, Illinois

No ZIP code carries the name of Forest, Illinois, in Mason County; the nearest ZIP codes are 61532 and 61567, in area code 309, with 861 as an overlay.

Nearest ZIP: 61532, 61567
Area codes: 309, 861
County: Mason County
State: Illinois
Time zone: Central Time
Coordinates: 40.3722, -89.8325

Nearest ZIP codes to Forest

These are the ZIP codes nearest to Forest, each listed with the post office it is named after.

ZIP code	Post office	County	Area codes
61532	Forest City	Mason County	309, 861
61567	Topeka	Mason County	309, 861

Area codes for Forest

Area code 309
In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 861
In service since February 24, 2023. Shares its area with 309. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Forest is in the Central Time zone.

Towns near Forest

Forest City1.4 km (0.9 mi)
Manito6.1 km (3.8 mi)
Goofy Ridge9.5 km (5.9 mi)
Topeka9.6 km (6.0 mi)
Liverpool14.5 km (9.0 mi)
San Jose14.6 km (9.1 mi)
Green Valley15.9 km (9.9 mi)
Easton16.8 km (10 mi)

Local numbers in area code 309

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