ZIP Code 37831

37831 is one of Tennessee's ZIP codes, delivering to addresses in Oak Ridge, Anderson County.

City: Oak Ridge
County: Anderson County
State: Tennessee
Prefix: 378xx

Where this code sits

37831 is part of the 378xx range, the group of codes handled by one mail processing centre. Oak Ridge is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Oak Ridge page.

Oak Ridge Tennessee ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37831 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37831

The ZIP codes whose reference points sit closest to 37831.
ZIP code	Distance	Delivers to
ZIP code 37716	1.4 mi	Clinton, TN
ZIP code 37717	1.6 mi	Clinton, TN
ZIP code 37710	7.0 mi	Briceville, TN
ZIP code 37830	7.2 mi	Oak Ridge, TN
ZIP code 37769	7.4 mi	Lake City, TN
ZIP code 37754	8.5 mi	Heiskell, TN
ZIP code 37931	8.9 mi	Knoxville, TN
ZIP code 37828	9.0 mi	Norris, 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 37831, plotted from its record coordinates.

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

Scope ZIP code 37831. 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.