| ZIP Codes: | 11 ZIP Codes (7 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Code: | 225 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:41 PM |
| Population: | 131,228 [See All] |
| FIPS: | 22005 |
| CBSA: | Baton Rouge, LA |
| Land Area: | 351 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 30.2048, -90.9223 |
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131,228 residents live across 11 ZIPs covering 351 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 112,458 to 131,228 from 2014 to 2024 — a +16.7% change. 4 ZIPs gained residents, 3 lost.
The parish's wealthiest ZIP 70734 (Geismar, $128,975 median) and poorest ZIP 70346 (Donaldsonville, $35,280) are 6.8 miles apart — a 3.7× income gap across local geography.
Median home values vary 5.5× across this parish — from $62,200 in 70725 (Darrow) to $344,100 in 70734 (Geismar).
Density varies 23× across the parish — from 44 people/sq mi in 70778 (Sorrento) to 1,022 in 70769 (Prairieville).
Educational attainment ranges from 11.6% bachelor's+ in 70346 (Donaldsonville) to 47.5% in 70734 (Geismar) — the breadth of educational profiles across the area.
Within Louisiana, this is the #11 most populous of 64 parishes and ranks #2 for median household income with the #2 fastest decade growth .
Weighted by population, the typical household earns about $94,317 across the parish — reflecting what a typical resident sees, not a simple ZIP average.
28.8% of adults age 25+ hold a bachelor's degree or higher (24,877 of 86,361 reporting).
7 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this parish.
Median household income spans 3.7× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Ascension Parish grew 16.7% over the past decade — concentrated in 2 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 70769 | Prairieville | Standard | 49,278 | $109,404 | 48.2 | 30.7% |
| 70737 | Gonzales | Standard | 49,084 | $82,521 | 52.4 | 20.7% |
| 70774 | Saint Amant | Standard | 10,041 | $102,422 | 66.1 | -6.9% |
| 70346 | Donaldsonville | Standard | 9,927 | $35,280 | 79.7 | -11.0% |
| 70734 | Geismar | Standard | 9,213 | $128,975 | 33.7 | 26.2% |
| 70778 | Sorrento | Standard | 2,742 | $101,967 | 62.4 | 1.4% |
| 70725 | Darrow | Standard | 943 | — | 8.2 | -55.6% |
| 70718 | Brittany | PO Box | — | — | 0.0 | — |
| 70738 | Burnside | PO Box | — | — | 0.0 | — |
| 70707 | Gonzales | PO Box | — | — | 0.0 | — |
| 70728 | Duplessis | PO Box | — | — | 0.0 | — |