ZIP Code 37321

37321 is one of Tennessee's ZIP codes, delivering to addresses in Dayton, Rhea County.

City: Dayton
County: Rhea County
State: Tennessee
Prefix: 373xx

Where this code sits

37321 is part of the 373xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Dayton.

Dayton Tennessee ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37321 delivers to without sharing its boundary.

ZIP codes nearest 37321

The ZIP codes whose reference points sit closest to 37321.
ZIP code	Distance	Delivers to
ZIP code 37332	8.0 mi	Evensville, TN
ZIP code 37373	9.4 mi	Sale Creek, TN
ZIP code 37338	10 mi	Graysville, TN
ZIP code 37308	11 mi	Birchwood, TN
ZIP code 37322	12 mi	Decatur, TN
ZIP code 37304	13 mi	Bakewell, TN
ZIP code 37367	15 mi	Pikeville, TN
ZIP code 37336	15 mi	Georgetown, 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 37321, plotted from its record coordinates.

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

Scope ZIP code 37321. 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.