ZIP Code 48064

48064 is one of Michigan's ZIP codes, delivering to addresses in Casco, St. Clair County.

City: Casco
County: St. Clair County
State: Michigan
Prefix: 480xx

Where this code sits

48064 is part of the 480xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Casco.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48064 delivers to without sharing its boundary.

ZIP codes nearest 48064

The ZIP codes whose reference points sit closest to 48064.
ZIP code	Distance	Delivers to
ZIP code 48004	3.9 mi	Anchorville, MI
ZIP code 48023	4.5 mi	Fair Haven, MI
ZIP code 48050	6.5 mi	New Haven, MI
ZIP code 48054	6.6 mi	East China, MI
ZIP code 48048	6.9 mi	New Haven, MI
ZIP code 48062	8.1 mi	Richmond, MI
ZIP code 48047	8.3 mi	New Baltimore, MI
ZIP code 48039	8.4 mi	Marine City, 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 48064, plotted from its record coordinates.

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

Scope ZIP code 48064. 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.