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Middletown, IL ZIP code

The ZIP code for Middletown, Illinois is 62666. It is in Logan County.

Population in these ZIPs
485
Avg. median income
$89,200population-weighted
Typical home value
$140,300population-weighted
Metro area
Lincoln, IL
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ZIP codes within 10 miles

Middletown, IL ZIP code list

Middletown, IL ZIP codes
ZIP codePopulationMedian incomeTypical home value
62666485$89,167$140,300

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 Middletown

Frequently asked questions

What is the ZIP code for Middletown, IL?

The ZIP code for Middletown, IL is 62666.

What county is Middletown, Illinois in?

Middletown ZIP codes are in Logan County.