Louisiana area codes
Louisiana has 6 active area codes. The original 1947 code was 504. The newest is 457 (2025).
The busiest codes by active prefixes are 318 (Shreveport), 337 (Lafayette), 504 (New Orleans), 225 (Baton Rouge), 985 (Houma).
Overlay territory: 318/457 — same geography, several codes, ten-digit local dialing.
Recent numbering history: 457 arrived in 2025 — an overlay added as existing codes approached exhaust.
Time zone is uniform across the state's codes: Central.
225 has served Baton Rouge since 1998, carries 496 active prefixes across 34 rate centers, split among 44 carriers. 377 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 3Q 2054 — no relief needed for decades. It was created from 504. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
318, in service since 1957, anchors Shreveport, carries 754 active prefixes across 118 rate centers, split among 53 carriers. 595 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is covers more rate centers (118) than any other Louisiana area code. NANPA projects its capacity to last until 3Q 2095 — no relief needed for decades. Local dialing is ten digits.
337 has served Lafayette since 1999, carries 597 active prefixes across 75 rate centers, split among 49 carriers. 426 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2053 — no relief needed for decades. It was created from 318. Local dialing is ten digits.
457 has served Louisiana since 2025. NANPA projects its capacity to last until 3Q 2095 — no relief needed for decades. It was created from 318. Local dialing is ten digits.
504, in service since 1947, anchors New Orleans, carries 559 active prefixes across 5 rate centers, split among 38 carriers. 370 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is the oldest area code in Louisiana, in service since 1947. NANPA projects its capacity to last until 3Q 2061 — no relief needed for decades. Local dialing is ten digits.
985 has served Houma since 2001, carries 446 active prefixes across 45 rate centers, split among 33 carriers. 333 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2103 — no relief needed for decades. It was created from 504. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
Numbers in the toll-free 8YY family are absent here by design: they carry no state assignment and answer anywhere in the US, Canada and the Caribbean.
Use the per-code pages to go deeper — coverage by locality, full prefix tables for the most-searched codes, and NANPA's capacity forecasts for each.
| Code | Major area | In service | Overlay complex | Prefixes |
|---|---|---|---|---|
| 225 | Baton Rouge | 1998 | — | 496 |
| 318 | Shreveport | 1957 | 318/457 | 754 |
| 337 | Lafayette | 1999 | — | 597 |
| 457 | — | 2025 | 318/457 | — |
| 504 | New Orleans | 1947 | — | 559 |
| 985 | Houma | 2001 | — | 446 |
FAQ
How many area codes does Louisiana have?
6 geographic area codes are currently in service: 225, 318, 337, 457, 504, 985.
What was Louisiana's first area code?
504, in service since 1947.
Will Louisiana get a new area code soon?
Not soon. The earliest exhaust forecast in the state is 337 at 2Q 2053, so current codes have ample capacity.
Which time zone are Louisiana numbers in?
All Louisiana area codes are in the Central time zone.