ZIP Code 37845

37845 is one of Tennessee's ZIP codes, delivering to addresses in Petros, Morgan County.

City: Petros
County: Morgan County
State: Tennessee
Prefix: 378xx

Where this code sits

37845 is part of the 378xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Petros.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37845 delivers to without sharing its boundary.

ZIP codes nearest 37845

The ZIP codes whose reference points sit closest to 37845.
ZIP code	Distance	Delivers to
ZIP code 37719	4.8 mi	Coalfield, TN
ZIP code 37840	6.7 mi	Oliver Springs, TN
ZIP code 37887	6.9 mi	Wartburg, TN
ZIP code 37710	9.2 mi	Briceville, TN
ZIP code 37829	9.5 mi	Oakdale, TN
ZIP code 37830	12 mi	Oak Ridge, TN
ZIP code 37748	12 mi	Harriman, TN
ZIP code 37831	14 mi	Oak Ridge, 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 37845, plotted from its record coordinates.

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

Scope ZIP code 37845. 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.