Categories: Geography of Louisiana | Area codes in the United States This is a list of North American telephone area codes in effect for the North American Numbering Plan. ... The North American Numbering Plan (NANP) is a system for three-digit area codes and seven-digit telephone numbers that direct telephone calls to particular regions on a public switched telephone network (PSTN), where they are further routed by the local network. ... A state is a set of institutions that possess the authority to make the rules that govern the people in one or more societies, having internal and external sovereignty over a definite territory. ... This article does not cite its references or sources. ... Area code 225 is a telephone area code that covers part of southern Louisiana, including the Baton Rouge area. ... Area code 337 is a telephone area code that covers southernwestern Louisiana. ... Area code 504 is a telephone area code that covers the greater New Orleans, Louisiana area. ... Area code 985 is the telephone area code for southeastern Louisiana excluding New Orleans. ... Area code 870 is the telephone area code serving southern, eastern and northeastern Arkansas. ... North American area code 409 is a state of Texas telephone area code for numbers in the Beaumont and Galveston areas. ... There are very few or no other articles that link to this one. ... There are very few or no other articles that link to this one. ... North American area code 936 is a state of Texas telephone area code for numbers in the Huntsville area. ... Area code 601 is the telephone area code for central Mississippi. ... Area code 769 is the first overlay telephone area code and fourth overall area code in Mississippi. ... Area code 662 is the telephone area code for northern Mississippi In 1999, the area code was split off from the original 601 area code, which had until 1997 covered the entire state. ... Area code 225 is a telephone area code that covers part of southern Louisiana, including the Baton Rouge area. ... Area code 337 is a telephone area code that covers southernwestern Louisiana. ... A state is a set of institutions that possess the authority to make the rules that govern the people in one or more societies, having internal and external sovereignty over a definite territory. ... Official language(s) English Capital Little Rock Largest city Little Rock Area  Ranked 29th  - Total 53,179 sq mi (137,732 km²)  - Width 239 miles (385 km)  - Length 261 miles (420 km)  - % water 2. ... Area code 479 is the telephone area code serving northwestern Arkansas. ... Area code 501 covers all of the state of Arkansas. ... Area code 870 is the telephone area code serving southern, eastern and northeastern Arkansas. ... A state is a set of institutions that possess the authority to make the rules that govern the people in one or more societies, having internal and external sovereignty over a definite territory. ... This article does not cite its references or sources. ... Area code 228 is the telephone area code for the Mississippi Gulf Coast. ... Area code 601 is the telephone area code for central Mississippi. ... Area code 662 is the telephone area code for northern Mississippi In 1999, the area code was split off from the original 601 area code, which had until 1997 covered the entire state. ... Area code 769 is the first overlay telephone area code and fourth overall area code in Mississippi. ... A state is a set of institutions that possess the authority to make the rules that govern the people in one or more societies, having internal and external sovereignty over a definite territory. ... Official language(s) None See: Languages of Texas Capital Austin Largest city Houston Area  Ranked 2nd  - Total 268,581 sq mi (695,622 km²)  - Width 773 miles (1,244 km)  - Length 790 miles (1,270 km)  - % water 2. ... See also List of Texas area codes List of North American area codes North American Numbering Plan North American Numbering Plan Administration Map Area code history. ... North American area codes 214, 469 and 972 are state of Texas telephone area codes for numbers in the Dallas area. ... North American area code 254 is a state of Texas telephone area code for numbers in the Waco area. ... North American telephone area codes 281, 713 and 832 are state of Texas area codes which serve the Houston area. ... North American area code 325 is a state of Texas telephone area code for numbers in the Abilene area. ... North American area code 361 is a state of Texas telephone area code for numbers in the Corpus Christi area. ... North American area code 409 is a state of Texas telephone area code for numbers in the Beaumont and Galveston areas. ... There are very few or no other articles that link to this one. ... North American area code 432 is a state of Texas telephone area code for numbers in the Permian Basin area of the state including the cities of Midland and Odessa. ... North American area codes 214, 469 and 972 are state of Texas telephone area codes for numbers in the Dallas area. ... North American area code 512 is a state of Texas telephone area code for numbers in the state capital area of Austin. ... North American area codes 682 and 817 are state of Texas telephone area code for numbers near the Fort Worth area. ... North American telephone area codes 281, 713 and 832 are state of Texas area codes which serve the Houston area. ... North American area code 806 is a state of Texas telephone area code for numbers near the cities of Amarillo and Lubbock. ... North American area codes 682 and 817 are state of Texas telephone area code for numbers near the Fort Worth area. ... North American area code 830 is a state of Texas telephone area code for numbers in the San Antonio area. ... North American telephone area codes 281, 713 and 832 are state of Texas area codes which serve the Houston area. ... There are very few or no other articles that link to this one. ... See also List of Texas area codes List of North American area codes North American Numbering Plan North American Numbering Plan Administration Map Area code history. ... North American area code 936 is a state of Texas telephone area code for numbers in the Huntsville area. ... North American area code 940 is a state of Texas telephone area code for numbers in the Wichita Falls area. ... North American area code 956 is a state of Texas telephone area code for numbers in the Brownsville and Laredo areas. ... North American area codes 214, 469 and 972 are state of Texas telephone area codes for numbers in the Dallas area. ... North American area code 979 is a state of Texas telephone area code for numbers in the College Station area. ...