ZIP Code 63621

63621 is one of Missouri's ZIP codes, delivering to addresses in Arcadia, Iron County.

City: Arcadia
County: Iron County
State: Missouri
Prefix: 636xx

Where this code sits

63621 is part of the 636xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Arcadia.

Arcadia Missouri ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63621 delivers to without sharing its boundary.

ZIP codes nearest 63621

The ZIP codes whose reference points sit closest to 63621.
ZIP code	Distance	Delivers to
ZIP code 63620	7.1 mi	Annapolis, MO
ZIP code 63650	9.0 mi	Ironton, MO
ZIP code 63663	9.8 mi	Pilot Knob, MO
ZIP code 63654	13 mi	Lesterville, MO
ZIP code 63656	13 mi	Middle Brook, MO
ZIP code 63636	13 mi	Des Arc, MO
ZIP code 63675	14 mi	Vulcan, MO
ZIP code 63645	15 mi	Fredericktown, 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 63621, plotted from its record coordinates.

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

Scope ZIP code 63621. 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.