Castleton, IL ZIP code

The ZIP code for Castleton, Illinois is 61426. It is in Stark County.

61426

Population in these ZIPs: 41
Avg. median income: —population-weighted
Typical home value: —population-weighted
Metro area: Peoria, IL

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Castleton, IL ZIP code list

Castleton, IL ZIP codes
ZIP code	Population	Median income	Typical home value
61426	41	—	—

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Castleton

Wyoming 5 mi
Camp Grove 5 mi
Bradford 6 mi
Speer 9 mi
Toulon 9 mi
Neponset 12 mi
Sparland 12 mi
Henry 12 mi
Buda 13 mi
Tiskilwa 14 mi
La Fayette 14 mi
Edelstein 14 mi

Frequently asked questions

What is the ZIP code for Castleton, IL?

The ZIP code for Castleton, IL is 61426.

What county is Castleton, Illinois in?

Castleton ZIP codes are in Stark County.