ZIP Code 62666

62666 is one of Illinois's ZIP codes, delivering to addresses in Middletown, Logan County.

City: Middletown
County: Logan County
State: Illinois
Prefix: 626xx

Where this code sits

62666 is part of the 626xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Middletown.

Middletown Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62666 delivers to without sharing its boundary.

ZIP codes nearest 62666

The ZIP codes whose reference points sit closest to 62666.
ZIP code	Distance	Delivers to
ZIP code 62671	5.1 mi	New Holland, IL
ZIP code 62613	8.6 mi	Athens, IL
ZIP code 62642	8.7 mi	Greenview, IL
ZIP code 62634	9.0 mi	Elkhart, IL
ZIP code 62664	9.5 mi	Mason City, IL
ZIP code 62693	10 mi	Williamsville, IL
ZIP code 62659	12 mi	Lincoln'S New Salem, IL
ZIP code 62656	12 mi	Lincoln, IL

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 62666, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 62666. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.