ZIP Code 48611

48611 is one of Michigan's ZIP codes, delivering to addresses in Auburn, Bay County.

City: Auburn
County: Bay County
State: Michigan
Prefix: 486xx

Where this code sits

48611 is part of the 486xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Auburn.

Auburn Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48611 delivers to without sharing its boundary.

989 Area code 989

ZIP codes nearest 48611

The ZIP codes whose reference points sit closest to 48611.
ZIP code	Distance	Delivers to
ZIP code 48674	4.7 mi	Midland, MI
ZIP code 48642	5.2 mi	Midland, MI
ZIP code 48710	6.5 mi	University Center, MI
ZIP code 48667	7.2 mi	Midland, MI
ZIP code 48631	7.4 mi	Kawkawlin, MI
ZIP code 48706	7.5 mi	Bay City, MI
ZIP code 48623	7.5 mi	Freeland, MI
ZIP code 48670	8.0 mi	Midland, 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 48611, plotted from its record coordinates.

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

Scope ZIP code 48611. 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.