Zip Code 70458 — Slidell, LA
70458 is a ZIP Code associated with Slidell, LA, located within St. Tammany. 70458 ranks #2 out of 16 ZIP codes in St. Tammany County by population (and #17 out of 539 in LA). The area supports an estimated population of 39,034 residents across Data Pending housing units, with a population density of 721.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (30.258640, -89.794410)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 70458 |
| Primary City | Slidell |
| State / Province | LA |
| County | St. Tammany |
| Total Population | 39,034 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 721.7 people/sq mi |
| Timezone | America/Chicago |
How 70458 Compares
| Metric | ZIP 70458 | St. Tammany County | LA State Average |
|---|
| Population | 39,034 | 272,334 (Total) | 4,611,457 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 721.7 /sq mi | -- | -- |
| County Pop Rank | #2 of 16 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →