ZIP Code 37870

37870 is one of Tennessee's ZIP codes, delivering to addresses in Speedwell, Claiborne County.

City: Speedwell
County: Claiborne County
State: Tennessee
Prefix: 378xx

Where this code sits

37870 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Speedwell.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37870 delivers to without sharing its boundary.

ZIP codes nearest 37870

The ZIP codes whose reference points sit closest to 37870.
ZIP code	Distance	Delivers to
ZIP code 37866	7.7 mi	Sharps Chapel, TN
ZIP code 37851	8.8 mi	Pruden, TN
ZIP code 37724	8.8 mi	Cumberland Gap, TN
ZIP code 37715	9.2 mi	Clairfield, TN
ZIP code 37707	9.2 mi	Arthur, TN
ZIP code 37825	10 mi	New Tazewell, TN
ZIP code 37730	10 mi	Eagan, TN
ZIP code 40965	11 mi	Middlesboro, 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 37870, plotted from its record coordinates.

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

Scope ZIP code 37870. 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.