ZIP Code 71866

71866 is one of Arkansas's ZIP codes, delivering to addresses in Winthrop, Little River County.

City: Winthrop
County: Little River County
State: Arkansas
Prefix: 718xx

Where this code sits

71866 is part of the 718xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Winthrop.

Winthrop Arkansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 71866 delivers to without sharing its boundary.

ZIP codes nearest 71866

The ZIP codes whose reference points sit closest to 71866.
ZIP code	Distance	Delivers to
ZIP code 71842	8.0 mi	Horatio, AR
ZIP code 71820	8.5 mi	Alleene, AR
ZIP code 71836	9.7 mi	Foreman, AR
ZIP code 71832	13 mi	De Queen, AR
ZIP code 74740	15 mi	Haworth, OK
ZIP code 74734	16 mi	Eagletown, OK
ZIP code 71823	16 mi	Ben Lomond, AR
ZIP code 71865	16 mi	Wilton, AR

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 71866, plotted from its record coordinates.

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

Scope ZIP code 71866. 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.