Louisiana Area Codes
6 active area codes · New Orleans · Population around 4,614,878
Louisiana has 6 active area codes, serving cities like New Orleans, Baton Rouge, and Shreveport. Of those, 2 are overlays covering ground another code already covers, which is why local calls there use all ten digits. The newest, 457, has been in service since September 25, 2025. Each code below links to its cities, carriers, timezone, and coverage map.
Louisiana Area Code Map
What area codes does Louisiana have?
- 225Baton RougeCentral Time (CT) · 68 cities · 879,520
- 318OverlayShreveportCentral Time (CT) · 197 cities · 1,137,593
- 337LafayetteCentral Time (CT) · 96 cities · 959,290
- 457OverlayShreveportCentral Time (CT) · 197 cities · 1,137,593
- 504New OrleansCentral Time (CT) · 30 cities · 895,546
- 985HoumaCentral Time (CT) · 86 cities · 785,808
More than one of these codes covers 38 of the 64 counties in Louisiana, and one county is covered by 3 of them. Each card counts the people inside that code's own boundary at the 2020 census. Adding all 6 gives 5,795,350, against the 4,657,757 the same census counts in those counties, because 1,137,593 residents fall inside more than one code.
How many phone prefixes does Louisiana use?
The area codes in Louisiana hold 2,745 assigned prefixes between them, listed under 79 distinct carrier names. A prefix is the three digits after the area code, and NANPA assigns each one to a single carrier. One of the 6 codes here — 457 — is newer than the NANPA extract behind these numbers, so its prefixes are not counted above.
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Frequently Asked Questions
How many area codes does Louisiana have?
Louisiana has 6 active area codes: 225, 318, 337, 457, 504, 985.
What is the main area code for Louisiana?
Of the 6 area codes in Louisiana, 504 is the oldest one still serving New Orleans, its largest city. 504 has been in service since 1947.
What are the largest cities in Louisiana?
The largest cities in Louisiana include New Orleans, Baton Rouge, Shreveport, Metairie, Lafayette.
What is the total population of Louisiana?
Louisiana has an estimated total population of 4,614,878 based on US Census PEP 2024 data.
Do I have to dial ten digits in Louisiana?
In the parts of Louisiana covered by an overlay, yes. 2 of the 6 area codes here cover ground another code already covers, and where two codes share an area, local calls need the area code as well as the seven-digit number.
Why does Louisiana have 6 area codes?
They arrived one at a time rather than all at once: 504 has been in service since 1947. 2 of the 6 are overlays, laid over a code that already covered the same ground instead of splitting its map in two. The most recent is 457, in service since September 25, 2025.
What is the newest area code in Louisiana?
457, in service since September 25, 2025.
Is my county covered by more than one area code in Louisiana?
It may be: more than one area code covers 38 of the 64 counties in Louisiana, and one county there is covered by 3 of them. The table above shows which codes reach each of the largest cities.