ZIP Code 63401

63401 is one of Missouri's ZIP codes, delivering to addresses in Hannibal, Marion County.

City: Hannibal
County: Marion County
State: Missouri
Prefix: 634xx

Where this code sits

63401 is part of the 634xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hannibal.

Hannibal Missouri ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63401 delivers to without sharing its boundary.

ZIP codes nearest 63401

The ZIP codes whose reference points sit closest to 63401.
ZIP code	Distance	Delivers to
ZIP code 63467	7.2 mi	Saverton, MO
ZIP code 63459	8.0 mi	New London, MO
ZIP code 62343	8.0 mi	Hull, IL
ZIP code 62360	9.9 mi	Payson, IL
ZIP code 63461	10 mi	Palmyra, MO
ZIP code 62345	12 mi	Kinderhook, IL
ZIP code 62365	14 mi	Plainville, IL
ZIP code 63433	15 mi	Ashburn, 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 63401, plotted from its record coordinates.

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

Scope ZIP code 63401. 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.