County ZIP codes · Louisiana · FIPS 22055
Lafayette Parish, LA ZIP Codes
Lafayette Parish, Louisiana has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 14 residential and 7 for PO boxes or a single organization. 11 of the residential ones lie mainly in Lafayette Parish and 3 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $33,365 in 70501 (Lafayette) to $106,710 in 70518 (Broussard) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Lafayette Parish?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $51,470 and $86,005.
They carry 10 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 14 residential ZIP codes in Lafayette Parish
11 ZIP codes lie mainly in Lafayette Parish; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 70506 | Lafayette | 42,318 | 2,038 | $57k | $218k | 100% |
| 70508 | Lafayette | 40,592 | 1,670 | $86k | $305k | 100% |
| 70592 | Youngsville | 32,167 | 757 | $93k | $260k | 74% |
| 70503 | Lafayette | 28,643 | 2,529 | $95k | $341k | 100% |
| 70501 | Lafayette | 26,465 | 1,729 | $33k | $117k | 100% |
| 70520 | Carencro | 20,390 | 525 | $63k | $208k | 97% |
| 70507 | Lafayette | 20,096 | 938 | $64k | $212k | 100% |
| 70518 | Broussard | 17,263 | 414 | $107k | $298k | 51% |
| 70529 | Duson | 12,949 | 356 | $52k | $200k | 97% |
| 70583 | Scott | 8,386 | 296 | $52k | $141k | 86% |
| 70558 | Milton | 24 | 202 | – | – | 100% |
Partly in Lafayette Parish
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
8 ZIP codes of Lafayette Parish extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Lafayette | Elsewhere |
|---|---|---|
| 70592 | 74% | Vermilion Parish 24%; Iberia Parish 2% |
| 70517 | 1% | St. Martin Parish 99% |
| 70520 | 97% | St. Landry Parish 3% |
| 70518 | 51% | St. Martin Parish 45%; Iberia Parish 3% |
| 70578 | 18% | Acadia Parish 68%; Vermilion Parish 14% |
| 70529 | 97% | Acadia Parish 2% |
| 70555 | 3% | Vermilion Parish 97% |
| 70583 | 86% | Acadia Parish 14% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Lafayette Parish's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Lafayette Parish starts with 705.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 705 | Lafayette, LA (SCF 705) | 21 | 75 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.