ZIP Code 63388

63388 is one of Missouri's ZIP codes, delivering to addresses in Williamsburg, Callaway County.

City: Williamsburg
County: Callaway County
State: Missouri
Prefix: 633xx

Where this code sits

63388 is part of the 633xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Williamsburg.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63388 delivers to without sharing its boundary.

ZIP codes nearest 63388

The ZIP codes whose reference points sit closest to 63388.
ZIP code	Distance	Delivers to
ZIP code 65077	9.1 mi	Steedman, MO
ZIP code 65251	11 mi	Fulton, MO
ZIP code 65231	11 mi	Auxvasse, MO
ZIP code 65262	11 mi	Kingdom City, MO
ZIP code 65069	12 mi	Rhineland, MO
ZIP code 65067	13 mi	Portland, MO
ZIP code 65059	14 mi	Mokane, MO
ZIP code 63363	15 mi	New Florence, MO

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 63388, plotted from its record coordinates.

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

Scope ZIP code 63388. 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.