Macomb, Illinois

Macomb, Illinois
Macomb Square, 2006
Location in McDonough County, Illinois
Macomb
Macomb
Coordinates: 40°28′15″N 90°40′51″W / 40.47083°N 90.68083°W / 40.47083; -90.68083
CountryUnited States
StateIllinois
CountyMcDonough
IncorporatedDecember 24, 1830
Government
  MayorMichael J. Inman
Area
  Total
11.03 sq mi (28.57 km2)
  Land10.60 sq mi (27.46 km2)
  Water0.43 sq mi (1.12 km2)  3.87%
Elevation
643 ft (196 m)
Population
 (2020)
  Total
15,051
  Density1,419.77/sq mi (548.19/km2)
Time zoneUTC-6 (CST)
  Summer (DST)UTC-5 (CDT)
ZIP Code
61455
Area code(s)309, 861
FIPS code17-45889
GNIS ID2395801
Websitewww.cityofmacomb.com

Macomb (/məˈkm/) is a city in and the county seat of McDonough County, Illinois, United States. It is situated in western Illinois, about 75 miles (121 km) southwest of Peoria. As of the 2020 census, the population of the city was 15,051, down 22% from 19,288 in 2010. Macomb is the home of Western Illinois University.