ZIP Code 37729

37729 is one of Tennessee's ZIP codes, delivering to addresses in Duff, Campbell County.

City: Duff
County: Campbell County
State: Tennessee
Prefix: 377xx

Where this code sits

37729 is part of the 377xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Duff.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37729 delivers to without sharing its boundary.

ZIP codes nearest 37729

The ZIP codes whose reference points sit closest to 37729.
ZIP code	Distance	Delivers to
ZIP code 37730	4.8 mi	Eagan, TN
ZIP code 37766	6.3 mi	La Follette, TN
ZIP code 37762	6.5 mi	Jellico, TN
ZIP code 37715	7.0 mi	Clairfield, TN
ZIP code 37819	7.8 mi	Newcomb, TN
ZIP code 40940	8.7 mi	Frakes, KY
ZIP code 37851	9.6 mi	Pruden, TN
ZIP code 37870	13 mi	Speedwell, 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 37729, plotted from its record coordinates.

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

Scope ZIP code 37729. 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.