ZIP Code 49318

49318 is one of Michigan's ZIP codes, delivering to addresses in Casnovia, Muskegon County.

City: Casnovia
County: Muskegon County
State: Michigan
Prefix: 493xx

Where this code sits

49318 is part of the 493xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Casnovia.

Casnovia Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 49318 delivers to without sharing its boundary.

616 Area code 616

ZIP codes nearest 49318

The ZIP codes whose reference points sit closest to 49318.
ZIP code	Distance	Delivers to
ZIP code 49303	2.7 mi	Bailey, MI
ZIP code 49330	4.3 mi	Kent City, MI
ZIP code 49403	6.3 mi	Conklin, MI
ZIP code 49327	7.0 mi	Grant, MI
ZIP code 49451	7.3 mi	Ravenna, MI
ZIP code 49345	8.7 mi	Sparta, MI
ZIP code 49435	13 mi	Marne, MI
ZIP code 49337	13 mi	Newaygo, 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 49318, plotted from its record coordinates.

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

Scope ZIP code 49318. 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.