Alabama Borders: States, Map & Complete Guide
Fact-checked • Updated January 11, 2026
Alabama borders four states: Tennessee to the north, Georgia to the east, Florida to the south, and Mississippi to the west. The state also touches the Gulf of Mexico along its southern coast. The Chattahoochee River forms part of Alabama's eastern boundary with Georgia.
Alabama Border Map
Map showing Alabama's boundaries with Tennessee, Georgia, Florida, Mississippi, and the Gulf of Mexico.
Border Details
Explore each of Alabama's borders in detail. Click any card to learn more.
Tennessee
Alabama's northern border follows a straight line along the 35th parallel north.
Georgia
The Chattahoochee River forms the southern section of Alabama's border with Georgia.
Florida
Alabama's southern border with Florida runs along the 31st parallel north.
Mississippi
Alabama's western boundary with Mississippi includes portions of the Tennessee River.
Gulf of Mexico
Alabama has about 53 miles of Gulf coastline between Mississippi and Florida.
Which States Border Alabama?
Alabama shares its borders with four U.S. states: Tennessee to the north, Georgia to the east, Florida to the south, and Mississippi to the west. Each border has distinct geographic features that shape Alabama's boundaries.
North: Tennessee
Tennessee and Alabama are separated by a border located on Alabama's northern edge. The state line follows the 35th parallel north latitude, creating a straight east-west boundary across the top of Alabama.
The Alabama-Tennessee border extends for about 115 miles from Mississippi in the west to Georgia in the east. Alabama counties along this border include Lauderdale, Limestone, Madison, Jackson, and DeKalb. On the Tennessee side, border counties include Wayne, Lawrence, Giles, Lincoln, Franklin, Marion, Grundy, and Sequatchie.
- Border follows the 35th parallel north
- About 115 miles east-west
- Alabama counties: Lauderdale, Limestone, Madison, Jackson, DeKalb
East: Georgia (Chattahoochee River Border)
Georgia and Alabama are separated by a border located on Alabama's eastern edge. The boundary includes both a straight line in the north and the Chattahoochee River in the south, creating a mixed border type.
The Alabama-Georgia border runs for about 285 miles from Tennessee in the north to Florida in the south. The Chattahoochee River forms the southern portion of this border, creating a natural boundary. Alabama counties along this border include DeKalb, Cherokee, Cleburne, Randolph, Chambers, Lee, Russell, Barbour, and Henry.
- About 285 miles north-south
- Chattahoochee River forms southern section
- Alabama counties: DeKalb, Cherokee, Cleburne, Randolph, Chambers, Lee, Russell, Barbour, Henry
South: Florida
Florida and Alabama are separated by a border located on Alabama's southern edge. The state line follows the 31st parallel north latitude, creating a straight east-west boundary.
The Alabama-Florida border extends for about 110 miles from the Gulf of Mexico in the west to Georgia in the east. Alabama's coastal counties along this border include Mobile, Baldwin, and part of Escambia County. On the Florida side, Escambia, Santa Rosa, Okaloosa, Walton, Holmes, Washington, Jackson, and Gadsden counties sit along the border.
- Border follows the 31st parallel north
- About 110 miles east-west
- Alabama counties: Mobile, Baldwin
West: Mississippi
Mississippi and Alabama are separated by a border located on Alabama's western edge. The boundary runs roughly north-south and includes portions of the Tennessee River, creating a mixed border type.
The Alabama-Mississippi border extends for about 310 miles from Tennessee in the north to the Gulf of Mexico in the south. Alabama counties along this border include Lauderdale, Colbert, Franklin, Marion, Lamar, Pickens, Sumter, Choctaw, Washington, Clarke, and Mobile. The Tennessee River creates part of this boundary in the northern section.
- About 310 miles north-south (longest border)
- Tennessee River forms portions of border
- Alabama counties: Lauderdale, Colbert, Franklin, Marion, Lamar, Pickens, Sumter, Choctaw, Washington, Clarke, Mobile
Gulf of Mexico: Alabama's Southern Coastline
The Gulf of Mexico borders Alabama along its southern coast, providing about 53 miles of shoreline between Mississippi and Florida. While this is one of the shortest Gulf coastlines among U.S. states, Alabama's coast includes important ports like Mobile and popular beach destinations like Gulf Shores and Orange Beach. Mobile Bay, a major estuary on Alabama's coast, serves as one of the Gulf's most important shipping channels.
Key Facts & Statistics
This table shows every border Alabama shares, organized by direction and type.
Alabama borders exactly four U.S. states
Frequently Asked Questions
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Sources & References
This article has been researched using authoritative sources to ensure accuracy and reliability.
Geographic features, river boundaries, and topographic data
Coastline measurements and Gulf of Mexico data