ZIP Code 37888

37888 is one of Tennessee's ZIP codes, delivering to addresses in Washburn, Grainger County.

City: Washburn
County: Grainger County
State: Tennessee
Prefix: 378xx

Where this code sits

37888 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Washburn.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37888 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37888

The ZIP codes whose reference points sit closest to 37888.
ZIP code	Distance	Delivers to
ZIP code 37773	5.5 mi	Lone Mountain, TN
ZIP code 37861	6.2 mi	Rutledge, TN
ZIP code 37848	7.1 mi	Powder Springs, TN
ZIP code 37825	8.4 mi	New Tazewell, TN
ZIP code 37824	9.6 mi	New Tazewell, TN
ZIP code 37879	11 mi	Tazewell, TN
ZIP code 37709	12 mi	Blaine, TN
ZIP code 37779	12 mi	Luttrell, 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 37888, plotted from its record coordinates.

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

Scope ZIP code 37888. 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.