ZIP Code 37891

37891 is one of Tennessee's ZIP codes, delivering to addresses in Whitesburg, Hamblen County.

City: Whitesburg
County: Hamblen County
State: Tennessee
Prefix: 378xx

Where this code sits

37891 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Whitesburg.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37891 delivers to without sharing its boundary.

ZIP codes nearest 37891

The ZIP codes whose reference points sit closest to 37891.
ZIP code	Distance	Delivers to
ZIP code 37860	2.6 mi	Russellville, TN
ZIP code 37810	6.0 mi	Mohawk, TN
ZIP code 37711	6.2 mi	Bulls Gap, TN
ZIP code 37811	7.8 mi	Mooresburg, TN
ZIP code 37778	8.0 mi	Lowland, TN
ZIP code 37815	8.0 mi	Morristown, TN
ZIP code 37816	8.0 mi	Morristown, TN
ZIP code 37813	8.6 mi	Morristown, 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 37891, plotted from its record coordinates.

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

Scope ZIP code 37891. 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.