Lockport Louisiana ZIP Codes
Lockport holds a single ZIP code.
Every ZIP code in Lockport
| ZIP code | Parish |
|---|---|
| 70374 | Lafourche Parish |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Lockport codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Lockport. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Lockport ZIP code begins 703. Those first three digits identify the sectional center facility that processes mail for this part of Louisiana. Statewide that range covers 38 ZIP codes, so Lockport accounts for 3% of it.
Every Louisiana ZIP prefix and the region it covers →
Area codes covering Lockport
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Lockport occupies.
Lockport Louisiana area codes in full →
Where Lockport's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Lockport
| City | Distance | ZIP codes |
|---|---|---|
| Houma Louisiana ZIP codes | 12 mi | 4 ZIP codes |
| Thibodaux Louisiana ZIP codes | 20 mi | 3 ZIP codes |
| Golden Meadow Louisiana ZIP codes | 24 mi | 1 ZIP code |
| Westwego Louisiana ZIP codes | 30 mi | 2 ZIP codes |
| Kenner Louisiana ZIP codes | 30 mi | 5 ZIP codes |
| Gramercy Louisiana ZIP codes | 31 mi | 1 ZIP code |
| Lutcher Louisiana ZIP codes | 31 mi | 1 ZIP code |
| Gretna Louisiana ZIP codes | 34 mi | 3 ZIP codes |
Straight-line distance between place reference points, not driving distance.