ZIP Code 61865

61865 is one of Illinois's ZIP codes, delivering to addresses in Potomac, Vermilion County.

City: Potomac
County: Vermilion County
State: Illinois
Prefix: 618xx

Where this code sits

61865 is part of the 618xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Potomac.

Potomac Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61865 delivers to without sharing its boundary.

ZIP codes nearest 61865

The ZIP codes whose reference points sit closest to 61865.
ZIP code	Distance	Delivers to
ZIP code 61831	6.2 mi	Collison, IL
ZIP code 61848	6.5 mi	Henning, IL
ZIP code 61862	7.1 mi	Penfield, IL
ZIP code 61812	7.3 mi	Armstrong, IL
ZIP code 60963	8.9 mi	Rossville, IL
ZIP code 60932	11 mi	East Lynn, IL
ZIP code 60960	11 mi	Rankin, IL
ZIP code 61847	11 mi	Gifford, 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 61865, plotted from its record coordinates.

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

Scope ZIP code 61865. 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.