ZIP Code 64420

64420 is one of Missouri's ZIP codes, delivering to addresses in Allendale, Worth County.

City: Allendale
County: Worth County
State: Missouri
Prefix: 644xx

Where this code sits

64420 is part of the 644xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Allendale.

Allendale Missouri ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 64420 delivers to without sharing its boundary.

660 Area code 660

ZIP codes nearest 64420

The ZIP codes whose reference points sit closest to 64420.
ZIP code	Distance	Delivers to
ZIP code 64441	4.8 mi	Denver, MO
ZIP code 64456	5.8 mi	Grant City, MO
ZIP code 64458	6.8 mi	Hatfield, MO
ZIP code 50860	9.1 mi	Redding, IA
ZIP code 64499	10 mi	Worth, MO
ZIP code 64467	11 mi	Martinsville, MO
ZIP code 64453	12 mi	Gentry, MO
ZIP code 64486	15 mi	Sheridan, 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 64420, plotted from its record coordinates.

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

Scope ZIP code 64420. 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.