ZIP Code 37866

37866 is one of Tennessee's ZIP codes, delivering to addresses in Sharps Chapel, Union County.

City: Sharps Chapel
County: Union County
State: Tennessee
Prefix: 378xx

Where this code sits

37866 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sharps Chapel.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37866 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37866

The ZIP codes whose reference points sit closest to 37866.
ZIP code	Distance	Delivers to
ZIP code 37870	7.7 mi	Speedwell, TN
ZIP code 37807	9.4 mi	Maynardville, TN
ZIP code 37825	10 mi	New Tazewell, TN
ZIP code 37848	12 mi	Powder Springs, TN
ZIP code 37779	12 mi	Luttrell, TN
ZIP code 37773	13 mi	Lone Mountain, TN
ZIP code 37888	13 mi	Washburn, TN
ZIP code 37824	14 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 37866, plotted from its record coordinates.

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

Scope ZIP code 37866. 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.