ZIP Code 48637

48637 is one of Michigan's ZIP codes, delivering to addresses in Merrill, Saginaw County.

City: Merrill
County: Saginaw County
State: Michigan
Prefix: 486xx

Where this code sits

48637 is part of the 486xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Merrill.

Merrill Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48637 delivers to without sharing its boundary.

989 Area code 989

ZIP codes nearest 48637

The ZIP codes whose reference points sit closest to 48637.
ZIP code	Distance	Delivers to
ZIP code 48662	4.7 mi	Wheeler, MI
ZIP code 48626	5.3 mi	Hemlock, MI
ZIP code 48615	8.6 mi	Breckenridge, MI
ZIP code 48614	9.8 mi	Brant, MI
ZIP code 48641	10 mi	Midland, MI
ZIP code 48623	11 mi	Freeland, MI
ZIP code 48655	11 mi	Saint Charles, MI
ZIP code 48609	12 mi	Saginaw, 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 48637, plotted from its record coordinates.

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

Scope ZIP code 48637. 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.