Hannibal, Missouri

Hannibal is a city along the Mississippi River in Marion and Ralls counties in the U.S. state of Missouri. According to the 2020 U.S. Census, the population was 17,108.^[5]

Hannibal, Missouri
City
Downtown Hannibal and the Mississippi River viewed from Lover's Leap Mark Twain Boyhood Home & Museum Hannibal–LaGrange University Mark Twain Cave Rockcliffe Mansion
Nickname:  America's Hometown
Location within Marion County (left) and Missouri (right)
Hannibal Location within Missouri Show map of Missouri Hannibal Location within the United States Show map of the United States
Coordinates: 39°42′35″N 91°23′38″W
Country	United States
State	Missouri
Counties	Marion, Ralls
Platted	1819
Incorporated	1845
Government
• Type	City manager and council
• Mayor	Barry Louderman
• City manager	Lisa Peck
Area [1]
• Total	16.47 sq mi (42.66 km2)
• Land	16.00 sq mi (41.44 km2)
• Water	0.47 sq mi (1.21 km2)
Elevation [2]	646 ft (197 m)
Population  (2020)[3]
• Total	17,108
• Estimate  (2023)	16,838
• Density	1,052.2/sq mi (406.3/km2)
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)
ZIP code	63401
Area code	573
FIPS code	29-30214[4]
GNIS feature ID	2394287[2]
Website	www.hannibal-mo.gov