Ottawa, Illinois

Ottawa, Illinois
City
Downtown Ottawa in May 2008
Flag Seal
Nicknames:  Radium City, The Friendly City, The Town of Two Rivers, The City On Sand, The Town of Stovepipe hats
Location of Ottawa in LaSalle County, Illinois.
Ottawa Show map of Illinois Ottawa Show map of the United States
Coordinates: 41°21′20″N 88°49′35″W / 41.35556°N 88.82639°W / 41.35556; -88.82639[1]
Country	United States
State	Illinois
County	LaSalle
Townships	Ottawa, South Ottawa, Dayton, Rutland, Wallace
Incorporated	1853
Government
• Type	Mayor–council
Area [2]
• Total	15.52 sq mi (40.19 km2)
• Land	14.66 sq mi (37.96 km2)
• Water	0.86 sq mi (2.22 km2)
Elevation [1]	472 ft (144 m)
Population  (2020)
• Total	18,840
• Density	1,281.98/sq mi (494.98/km2)
Time zone	UTC−6 (CST)
• Summer (DST)	UTC−5 (CDT)
ZIP code	61350
Area codes	815, 779
FIPS code	17-56926
GNIS feature ID	2396106[1]
Wikimedia Commons	Ottawa, Illinois
Website	cityofottawa.org

Ottawa is a city in and the county seat of LaSalle County, Illinois, United States. It is located at the confluence of the navigable Fox River and Illinois River, the latter being a conduit for river barges and connects Lake Michigan at Chicago, to the Mississippi River, and North America's 25,000 mile river system. The population estimate was 18,668, as of 2022.^[3] It is the principal city of the Ottawa, IL Micropolitan Statistical Area.