ZIP Code 49203

49203 is one of Michigan's ZIP codes, delivering to addresses in Jackson, Jackson County.

City: Jackson
County: Jackson County
State: Michigan
Prefix: 492xx

Where this code sits

49203 is part of the 492xx range, the group of codes handled by one mail processing centre. Jackson is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Jackson page.

Jackson Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 49203 delivers to without sharing its boundary.

517 Area code 517

ZIP codes nearest 49203

The ZIP codes whose reference points sit closest to 49203.
ZIP code	Distance	Delivers to
ZIP code 49204	1.3 mi	Jackson, MI
ZIP code 49201	2.2 mi	Jackson, MI
ZIP code 49202	2.4 mi	Jackson, MI
ZIP code 49254	5.0 mi	Michigan Center, MI
ZIP code 49283	7.2 mi	Spring Arbor, MI
ZIP code 49234	7.9 mi	Clarklake, MI
ZIP code 49246	8.7 mi	Horton, MI
ZIP code 49261	9.7 mi	Napoleon, MI

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 49203, plotted from its record coordinates.

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

Scope ZIP code 49203. 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.