ZIP Code 49405

49405 is one of Michigan's ZIP codes, delivering to addresses in Custer, Mason County.

City: Custer
County: Mason County
State: Michigan
Prefix: 494xx

Where this code sits

49405 is part of the 494xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Custer.

Custer Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 49405 delivers to without sharing its boundary.

231 Area code 231

ZIP codes nearest 49405

The ZIP codes whose reference points sit closest to 49405.
ZIP code	Distance	Delivers to
ZIP code 49458	3.5 mi	Walhalla, MI
ZIP code 49454	5.3 mi	Scottville, MI
ZIP code 49402	7.1 mi	Branch, MI
ZIP code 49410	7.4 mi	Fountain, MI
ZIP code 49459	13 mi	Walkerville, MI
ZIP code 49449	13 mi	Pentwater, MI
ZIP code 49411	13 mi	Free Soil, MI
ZIP code 49431	13 mi	Ludington, 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 49405, plotted from its record coordinates.

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

Scope ZIP code 49405. 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.