ZIP Code 64421

64421 is one of Missouri's ZIP codes, delivering to addresses in Amazonia, Andrew County.

City: Amazonia
County: Andrew County
State: Missouri
Prefix: 644xx

Where this code sits

64421 is part of the 644xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Amazonia.

Amazonia Missouri ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 64421 delivers to without sharing its boundary.

ZIP codes nearest 64421

The ZIP codes whose reference points sit closest to 64421.
ZIP code	Distance	Delivers to
ZIP code 64485	4.5 mi	Savannah, MO
ZIP code 64449	7.6 mi	Fillmore, MO
ZIP code 64505	8.6 mi	Saint Joseph, MO
ZIP code 64483	9.9 mi	Rosendale, MO
ZIP code 64506	10 mi	Saint Joseph, MO
ZIP code 66090	10 mi	Wathena, KS
ZIP code 64502	10 mi	Saint Joseph, MO
ZIP code 64501	10 mi	Saint Joseph, 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 64421, plotted from its record coordinates.

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

Scope ZIP code 64421. 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.