Population.us

Population of Ottawa, IL

Last official estimated population of Ottawa city (LaSalle County**, Illinois state) was 18,428 (year 2014)^[1]. This was 0.006% of total US population and 0.14% of total Illinois state population. Area of Ottawa city is 12.7 mi² (=33 km²)^[6], in this year population density was 1,445.79 p/mi². If population growth rate would be same as in period 2010-2014 (-0.46%/yr), Ottawa city population in 2022 would be 17,766*.

Historical population

Historical population of Ottawa city for period 1870-2014:

Ottawa city on population map

Estimated population for 2014^[1]. Click on flag to hide it.

Population • Legends • Position

Settlements near Ottawa city

• LaSalle city population 12.1 mi, 271°
• Marseilles city 9.2 mi, 122°
• Oglesby city 13 mi, 252°
• Seneca village 11.5 mi, 113°
• Sheridan village 14.5 mi, 32°
• North Utica village 9.8 mi, 270°
• Grand Ridge village 8 mi, 179°
• Naplate village 2.8 mi, 239°
• Kangley village 14.3 mi, 188°
• Leonore village 13.8 mi, 214°

Sources, notices

*Calculated by population.us from last known population growth rate, not official data.

**Some cities are placed on more than one county. Only 1 county is shown.

[1] Cities and Towns (Incorporated Places and Minor Civil Divisions) 2014, archived from the original, retrieved 02/23/2016

[2] City and Town Intercensal Estimates (2000-2010), archived from the original, retrieved 02/23/2016

[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, archived from the original, retrieved 02/23/2016

[4] Population of the 100 Largest Urban Places: 1980,

[5] Population of the 100 Largest Urban Places in history,

[6] Area, latitude longitude data, retrieved 02/23/2016

[7] Through the Decades, Overview 1790-2010, PDF, large files! >100 Mb