ZIP Code 61360

61360 is one of Illinois's ZIP codes, delivering to addresses in Seneca, LaSalle County.

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

Where this code sits

61360 is part of the 613xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Seneca.

Seneca Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61360 delivers to without sharing its boundary.

ZIP codes nearest 61360

The ZIP codes whose reference points sit closest to 61360.
ZIP code	Distance	Delivers to
ZIP code 61341	4.5 mi	Marseilles, IL
ZIP code 60479	6.6 mi	Verona, IL
ZIP code 60450	11 mi	Morris, IL
ZIP code 60437	11 mi	Kinsman, IL
ZIP code 60470	11 mi	Ransom, IL
ZIP code 60444	12 mi	Mazon, IL
ZIP code 61325	12 mi	Grand Ridge, IL
ZIP code 60557	12 mi	Wedron, 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 61360, plotted from its record coordinates.

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

Scope ZIP code 61360. 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.