ZIP CodesZIP codes in Ascension Parish, Louisiana
Ascension Parish, Louisiana has 11 ZIP codes in this list, from 70346 to 70778. They cover 10 places, among them Gonzales, Donaldsonville, Brittany and Darrow.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 70346 | Donaldsonville | 64.9 | 30.102, -90.997 |
| 70707 | Gonzales | no area | 30.205, -90.870 |
| 70718 | Brittany | no area | 30.201, -90.869 |
| 70725 | Darrow | 8.6 | 30.130, -90.965 |
| 70728 | Duplessis | no area | 30.295, -90.946 |
| 70734 | Geismar | 27.7 | 30.220, -91.008 |
| 70737 | Gonzales | 54.0 | 30.247, -90.918 |
| 70738 | Burnside | no area | 30.139, -90.924 |
| 70769 | Prairieville | 47.9 | 30.307, -90.941 |
| 70774 | Saint Amant | 52.5 | 30.238, -90.844 |
| 70778 | Sorrento | 45.9 | 30.185, -90.863 |
The ZIP code areas of Ascension Parish add up to about 302 square miles of land (781 sq km) as the Census Bureau draws them. The largest is 70346 (Donaldsonville), with 64.9 square miles.
Places with more than one code here: Gonzales (2 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Donaldsonville, LA 70346.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.