ZIP Code 70521

70521 is one of Louisiana's ZIP codes, delivering to addresses in Cecilia, St. Martin Parish.

City: Cecilia
Parish: St. Martin Parish
State: Louisiana
Prefix: 705xx

Where this code sits

70521 is part of the 705xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cecilia.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 70521 delivers to without sharing its boundary.

337 Area code 337

ZIP codes nearest 70521

The ZIP codes whose reference points sit closest to 70521.
ZIP code	Distance	Delivers to
ZIP code 70517	3.1 mi	Breaux Bridge, LA
ZIP code 70512	6.3 mi	Arnaudville, LA
ZIP code 70582	8.8 mi	Saint Martinville, LA
ZIP code 70507	11 mi	Lafayette, LA
ZIP code 70520	12 mi	Carencro, LA
ZIP code 70501	12 mi	Lafayette, LA
ZIP code 70551	12 mi	Leonville, LA
ZIP code 70502	13 mi	Lafayette, LA

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 70521, plotted from its record coordinates.

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

Scope ZIP code 70521. 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.