ZIP Code 39521

39521 is one of Mississippi's ZIP codes, delivering to addresses in Bay Saint Louis, Hancock County.

City: Bay Saint Louis
County: Hancock County
State: Mississippi
Prefix: 395xx

Where this code sits

39521 is part of the 395xx range, the group of codes handled by one mail processing centre. Bay Saint Louis is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 39521 delivers to without sharing its boundary.

228 Area code 228

ZIP codes nearest 39521

The ZIP codes whose reference points sit closest to 39521.
ZIP code	Distance	Delivers to
ZIP code 39522	0.0 mi	Stennis Space Center, MS
ZIP code 39529	0.0 mi	Stennis Space Center, MS
ZIP code 39525	7.5 mi	Diamondhead, MS
ZIP code 39556	7.5 mi	Kiln, MS
ZIP code 39520	7.7 mi	Bay Saint Louis, MS
ZIP code 39576	10 mi	Waveland, MS
ZIP code 39558	12 mi	Lakeshore, MS
ZIP code 39463	12 mi	Nicholson, MS

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 39521, plotted from its record coordinates.

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

Scope ZIP code 39521. 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.