ZIP Code 37881

37881 is one of Tennessee's ZIP codes, delivering to addresses in Thorn Hill, Grainger County.

City: Thorn Hill
County: Grainger County
State: Tennessee
Prefix: 378xx

Where this code sits

37881 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Thorn Hill.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37881 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37881

The ZIP codes whose reference points sit closest to 37881.
ZIP code	Distance	Delivers to
ZIP code 37708	5.4 mi	Bean Station, TN
ZIP code 37811	8.9 mi	Mooresburg, TN
ZIP code 37869	11 mi	Sneedville, TN
ZIP code 37879	12 mi	Tazewell, TN
ZIP code 37814	12 mi	Morristown, TN
ZIP code 37773	12 mi	Lone Mountain, TN
ZIP code 37861	13 mi	Rutledge, TN
ZIP code 37824	13 mi	New Tazewell, TN

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 37881, plotted from its record coordinates.

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

Scope ZIP code 37881. 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.