The Huntsville Metropolitan Statistical Area is a metropolitan statistical area on the northern border of Alabama. The metro area's principal city is Huntsville, and consists of two counties: Limestone and Madison. As of the 2020 United States census, the Huntsville Metropolitan Area's population was 491,723, making it the 2nd-largest metropolitan area in Alabama (behind only the Birmingham metropolitan area) and the 113th-largest in the United States.^[1]

Besides Huntsville, the following places are included in the metro area. Areas incorporated have 2020 census population data included.

• Ardmore (1,321), sister city of Ardmore Tennessee
• Athens (25,406)
• Brownsboro
• East Limestone
• Elkmont (411)
• Gurley (816)
• Harvest (5,893)
• Hazel Green (4,105)
• Lester (111)
• Madison (56,933), Largest suburb
• Meridianville (8,209)
• Monrovia
• Moores Mill (6,729)
• Mooresville (47), smallest suburb
• New Hope (2,889)
• New Market (1,543)
• Owens Cross Roads (2,594)
• Redstone Arsenal (837), U.S. Army post
• Toney
• Triana (2,890)

Below is the population of the Huntsville metropolitan area since the first time it was recorded in the 1810 United States census; as of the 2020 United States census, the Huntsville metropolitan area had 491,723 people. The 1810 census only includes Madison county as Madison county formed in 1808 while Limestone county formed in 1819. From the 1820 census afterwards, both counties are included in the demographics.

• Interstate 65
• Interstate 565
• U.S. Highway 72
• U.S. Highway 231
• U.S. Highway 431

• Table of United States Metropolitan Statistical Areas
• Table of United States Combined Statistical Areas
• Alabama census statistical areas