Map of Decatur, Alabama, United States

Decatur is a city in Alabama, United States, with a population of about 55,437. It lies at 34.6059°N, 86.9833°W, about 171 m above sea level. Decatur is about 1,006 km (625 mi) southwest of Washington, D.C., the capital. The nearest city on our map is Madison, 24 km to the northeast.

Decatur at a glance

Where is Decatur?

• The 9th largest city in Alabama on this site.
• Located in the Northern and Western hemispheres.
• Daylight ranges from about 9 h 50 min on the shortest day to 14 h 29 min on the longest day (around 21 December and 21 June).

Cities near Decatur

• Madison — 24 km northeast
• Huntsville — 39 km east
• East Florence — 65 km west
• Florence — 67 km west
• Gadsden — 111 km southeast
• Columbia — 112 km north
• Birmingham — 122 km south
• Spring Hill — 127 km north
• Vestavia Hills — 130 km south
• Hoover — 134 km south

Largest cities in Alabama

• Huntsville — 215,006
• Birmingham — 196,357
• Montgomery — 195,287
• Mobile — 183,289
• Tuscaloosa — 111,338
• Hoover — 84,848
• Dothan — 68,567
• Auburn — 62,059
• Madison — 46,962
• Florence — 40,026

Largest cities in United States

• New York City — 8,804,190
• Los Angeles — 3,820,914
• Brooklyn — 2,736,074
• Chicago — 2,664,452
• Queens — 2,316,841
• Houston — 2,314,157
• Phoenix — 1,650,070
• Philadelphia — 1,573,916
• San Antonio — 1,526,656
• Manhattan — 1,487,536

Map of United States and all its cities →

Other places named Decatur

• Decatur — Illinois, United States

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.