ZIP Code 61370

61370 is one of Illinois's ZIP codes, delivering to addresses in Tonica, LaSalle County.

City: Tonica
County: LaSalle County
State: Illinois
Prefix: 613xx

Where this code sits

61370 is part of the 613xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Tonica.

Tonica Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61370 delivers to without sharing its boundary.

ZIP codes nearest 61370

The ZIP codes whose reference points sit closest to 61370.
ZIP code	Distance	Delivers to
ZIP code 61316	2.7 mi	Cedar Point, IL
ZIP code 61348	4.5 mi	Oglesby, IL
ZIP code 61363	4.9 mi	Standard, IL
ZIP code 61334	6.1 mi	Lostant, IL
ZIP code 61332	6.4 mi	Leonore, IL
ZIP code 61354	7.2 mi	Peru, IL
ZIP code 61326	7.4 mi	Granville, IL
ZIP code 61301	7.7 mi	La Salle, 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 61370, plotted from its record coordinates.

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

Scope ZIP code 61370. 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.