ZIP Code 37840

37840 is one of Tennessee's ZIP codes, delivering to addresses in Oliver Springs, Morgan County.

City: Oliver Springs
County: Morgan County
State: Tennessee
Prefix: 378xx

Where this code sits

37840 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Oliver Springs.

Oliver Springs Tennessee ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37840 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37840

The ZIP codes whose reference points sit closest to 37840.
ZIP code	Distance	Delivers to
ZIP code 37719	4.1 mi	Coalfield, TN
ZIP code 37830	5.0 mi	Oak Ridge, TN
ZIP code 37845	6.7 mi	Petros, TN
ZIP code 37710	9.1 mi	Briceville, TN
ZIP code 37716	9.5 mi	Clinton, TN
ZIP code 37831	9.8 mi	Oak Ridge, TN
ZIP code 37717	11 mi	Clinton, TN
ZIP code 37748	12 mi	Harriman, 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 37840, plotted from its record coordinates.

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

Scope ZIP code 37840. 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.