| ZIP Codes: | 4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 225 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:26 PM |
| Population: | 28,012 [See All] |
| FIPS: | 22121 |
| CBSA: | Baton Rouge, LA |
| Land Area: | 199 sq mi |
| Water Area: | 9 sq mi |
| Coordinates: | 30.4524, -91.3106 |
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28,012 residents live across 4 ZIPs covering 199 sq mi, served by 4 distinct USPS-recognized cities.
Population moved from 24,477 to 28,012 from 2014 to 2024 — a +14.4% change. 3 ZIPs gained residents, 1 lost.
The parish's wealthiest ZIP 70729 (Erwinville, $109,653 median) and poorest ZIP 70767 (Port Allen, $68,384) are 7.6 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.5× across this parish — from $205,700 in 70767 (Port Allen) to $300,000 in 70729 (Erwinville).
Density varies 21× across the parish — from 45 people/sq mi in 70729 (Erwinville) to 928 in 70710 (Addis).
Educational attainment ranges from 18.2% bachelor's+ in 70767 (Port Allen) to 40.1% in 70729 (Erwinville) — the breadth of educational profiles across the area.
Within Louisiana, this is the #35 most populous of 64 parishes and ranks #1 for median household income with the #3 fastest decade growth .
Weighted by population, the typical household earns about $86,568 across the parish — reflecting what a typical resident sees, not a simple ZIP average.
23.3% of adults age 25+ hold a bachelor's degree or higher (4,598 of 19,701 reporting).
4 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this parish.