ZIP Code 42631

42631 is one of Kentucky's ZIP codes, delivering to addresses in Marshes Siding, McCreary County.

City: Marshes Siding
County: McCreary County
State: Kentucky
Prefix: 426xx

Where this code sits

42631 is part of the 426xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Marshes Siding.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42631 delivers to without sharing its boundary.

606 Area code 606

ZIP codes nearest 42631

The ZIP codes whose reference points sit closest to 42631.
ZIP code	Distance	Delivers to
ZIP code 42653	1.7 mi	Whitley City, KY
ZIP code 42647	3.2 mi	Stearns, KY
ZIP code 42638	4.9 mi	Revelo, KY
ZIP code 42635	6.3 mi	Pine Knot, KY
ZIP code 42634	6.6 mi	Parkers Lake, KY
ZIP code 42649	9.0 mi	Strunk, KY
ZIP code 37892	13 mi	Winfield, TN
ZIP code 42519	14 mi	Burnside, KY

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 42631, plotted from its record coordinates.

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

Scope ZIP code 42631. 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.