ZIP Code 63566

63566 is one of Missouri's ZIP codes, delivering to addresses in Winigan, Sullivan County.

City: Winigan
County: Sullivan County
State: Missouri
Prefix: 635xx

Where this code sits

63566 is part of the 635xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Winigan.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63566 delivers to without sharing its boundary.

660 Area code 660

ZIP codes nearest 63566

The ZIP codes whose reference points sit closest to 63566.
ZIP code	Distance	Delivers to
ZIP code 63557	7.2 mi	New Boston, MO
ZIP code 63539	12 mi	Ethel, MO
ZIP code 64630	12 mi	Browning, MO
ZIP code 64674	14 mi	Purdin, MO
ZIP code 63556	15 mi	Milan, MO
ZIP code 63545	16 mi	Green City, MO
ZIP code 64653	16 mi	Linneus, MO
ZIP code 63544	16 mi	Green Castle, 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 63566, plotted from its record coordinates.

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

Scope ZIP code 63566. 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.