ZIP Code 37803

37803 is one of Tennessee's ZIP codes, delivering to addresses in Maryville, Blount County.

City: Maryville
County: Blount County
State: Tennessee
Prefix: 378xx

Where this code sits

37803 is part of the 378xx range, the group of codes handled by one mail processing centre. Maryville is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Maryville page.

Maryville Tennessee ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 37803 delivers to without sharing its boundary.

865 Area code 865

ZIP codes nearest 37803

The ZIP codes whose reference points sit closest to 37803.
ZIP code	Distance	Delivers to
ZIP code 37878	4.8 mi	Tallassee, TN
ZIP code 37801	5.1 mi	Maryville, TN
ZIP code 37802	7.2 mi	Maryville, TN
ZIP code 37701	9.1 mi	Alcoa, TN
ZIP code 37737	9.2 mi	Friendsville, TN
ZIP code 37742	9.8 mi	Greenback, TN
ZIP code 37804	12 mi	Maryville, TN
ZIP code 37886	12 mi	Walland, 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 37803, plotted from its record coordinates.

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

Scope ZIP code 37803. 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.