ZIP Code 62943

62943 is one of Illinois's ZIP codes, delivering to addresses in Grantsburg, Johnson County.

City: Grantsburg
County: Johnson County
State: Illinois
Prefix: 629xx

Where this code sits

62943 is part of the 629xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Grantsburg.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62943 delivers to without sharing its boundary.

ZIP codes nearest 62943

The ZIP codes whose reference points sit closest to 62943.
ZIP code	Distance	Delivers to
ZIP code 62985	6.1 mi	Simpson, IL
ZIP code 62995	7.7 mi	Vienna, IL
ZIP code 62909	8.0 mi	Boles, IL
ZIP code 62972	11 mi	Ozark, IL
ZIP code 62908	11 mi	Belknap, IL
ZIP code 62923	12 mi	Cypress, IL
ZIP code 62928	12 mi	Eddyville, IL
ZIP code 62953	13 mi	Joppa, 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 62943, plotted from its record coordinates.

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

Scope ZIP code 62943. 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.