First three digits · Louisiana
ZIP Codes Starting with
47 ZIP codes start with 704, sorted at the New Orleans, LA (SCF 700) sectional center (USPS labeling list L005, effective October 1, 2026) in Louisiana: 39 residential ZIP codes across 5 counties and 8 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 704 mean?
The first digit, 7, is one of ten national areas (Arkansas, Louisiana, Oklahoma and Texas). The first three, 704, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 704 to the New Orleans, LA (SCF 700) facility. The last two digits pick the delivery area. By residents, the largest town names among the 704 ZIP codes are Slidell, Covington, Hammond, Mandeville, Ponchatoula and Franklinton.
The same facility sorts 4 prefixes, 210 ZIP codes in all: 700, 701, 703, 704.
Where are the 704 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 704
| County | ||||||
|---|---|---|---|---|---|---|
| 70401 | Hammond | Tangipahoa Parish | 21,221 | 612 | $51k | $211k |
| 70402 | Hammond | Tangipahoa Parish | 1,850 | 15,041 | – | – |
| 70403 | Hammond | Tangipahoa Parish | 30,173 | 713 | $51k | $212k |
| 70404 | Hammond | Tangipahoa Parish | PO Box or unique | – | – | – |
| 70420 | Abita Springs | St. Tammany Parish | 7,950 | 125 | $78k | $291k |
| 70421 | Akers | Tangipahoa Parish | PO Box or unique | – | – | – |
| 70422 | Amite | Tangipahoa Parish | 15,399 | 98 | $51k | $162k |
| 70426 | Angie | Washington Parish | 6,090 | 49 | $30k | $127k |
| 70427 | Bogalusa | Washington Parish | 17,596 | 124 | $38k | $133k |
| 70429 | Bogalusa | Washington Parish | PO Box or unique | – | – | – |
| 70431 | Bush | St. Tammany Parish | 5,769 | 83 | $70k | $246k |
| 70433 | Covington | St. Tammany Parish | 41,876 | 861 | $81k | $325k |
| 70434 | Covington | St. Tammany Parish | PO Box or unique | – | – | – |
| 70435 | Covington | St. Tammany Parish | 22,475 | 216 | $81k | $282k |
| 70436 | Fluker | Tangipahoa Parish | 104 | 15 | – | – |
| 70437 | Folsom | St. Tammany Parish | 8,030 | 93 | $61k | $299k |
| 70438 | Franklinton | Washington Parish | 19,349 | 56 | $53k | $168k |
| 70441 | Greensburg | St. Helena Parish | 5,685 | 27 | $39k | $69k |
| 70442 | Husser | Tangipahoa Parish | 196 | 12 | $65k | $203k |
| 70443 | Independence | Tangipahoa Parish | 9,006 | 118 | $58k | $164k |
| 70444 | Kentwood | Tangipahoa Parish | 8,687 | 36 | $52k | $178k |
| 70445 | Lacombe | St. Tammany Parish | 9,288 | 86 | $78k | $208k |
| 70446 | Loranger | Tangipahoa Parish | 7,173 | 87 | $72k | $250k |
| 70447 | Madisonville | St. Tammany Parish | 17,897 | 578 | $123k | $393k |
| 70448 | Mandeville | St. Tammany Parish | 26,338 | 1,200 | $96k | $340k |
| 70449 | Maurepas | Livingston Parish | 3,092 | 53 | $78k | $239k |
| 70450 | Mount Hermon | Washington Parish | 2,921 | 40 | $61k | $200k |
| 70451 | Natalbany | Tangipahoa Parish | 65 | 288 | – | – |
| 70452 | Pearl River | St. Tammany Parish | 12,650 | 128 | $63k | $233k |
| 70453 | Pine Grove | St. Helena Parish | 1,162 | 31 | $61k | $93k |
| 70454 | Ponchatoula | Tangipahoa Parish | 34,564 | 198 | $72k | $234k |
| 70455 | Robert | Tangipahoa Parish | 2,181 | 97 | $57k | $194k |
| 70456 | Roseland | Tangipahoa Parish | 3,193 | 97 | $47k | $116k |
| 70457 | Saint Benedict | St. Tammany Parish | 143 | 3,043 | – | – |
| 70458 | Slidell | St. Tammany Parish | 39,034 | 1,869 | $73k | $238k |
| 70459 | Slidell | St. Tammany Parish | PO Box or unique | – | – | – |
| 70460 | Slidell | St. Tammany Parish | 21,669 | 564 | $63k | $193k |
| 70461 | Slidell | St. Tammany Parish | 34,808 | 650 | $89k | $274k |
| 70462 | Springfield | Livingston Parish | 5,593 | 70 | $68k | $229k |
| 70463 | Sun | St. Tammany Parish | 99 | 114 | $26k | $134k |
| 70464 | Talisheek | St. Tammany Parish | 109 | 32 | – | – |
| 70465 | Tangipahoa | Tangipahoa Parish | 522 | 519 | $20k | – |
| 70466 | Tickfaw | Tangipahoa Parish | 10,148 | 296 | $66k | $167k |
| 70467 | Varnado | Washington Parish | PO Box or unique | – | – | – |
| 70469 | Slidell | St. Tammany Parish | PO Box or unique | – | – | – |
| 70470 | Mandeville | St. Tammany Parish | PO Box or unique | – | – | – |
| 70471 | Mandeville | St. Tammany Parish | 24,199 | 837 | $97k | $394k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.