Last official estimated population of Ontario city (San Bernardino County**, California state) was 169,089 (year 2014)[1]. This was 0.053% of total US population and 0.43% of total California state population. Area of Ontario city is 50.0 mi² (=129.5 km²)[6], in this year population density was 3,382.12 p/mi². If population growth rate would be same as in period 2010-2014 (+0.78%/yr), Ontario city population in 2024 would be 182,725*.
Historical population of Ontario city for period 1890-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1890-1900] +0.56 %/yr
[1900-1910] +19.46 %/yr
[1910-1920] +5.47 %/yr
[1920-1930] +6.44 %/yr
[1930-1940] +0.44 %/yr
[1940-1950] +4.88 %/yr
[1950-1960] +7.38 %/yr
[1960-1970] +3.24 %/yr
[1970-1980] +3.31 %/yr
[1980-1990] +4.14 %/yr
[1990-2000] +1.72 %/yr
[2000-2005] +1.06 %/yr
[2005-2010] -0.32 %/yr
[2010-2014] +0.78 %/yr
• Fontana city population
9.4 mi, 59°
• Rancho Cucamonga city
6.2 mi, 21°
• Pomona city
9.1 mi, 278°
• Jurupa Valley city
8.2 mi, 108°
• Chino city
5.2 mi, 215°
• Upland city
6.2 mi, 328°
• Eastvale city
5.4 mi, 165°
• Montclair city
5.8 mi, 292°
• Claremont city
8.6 mi, 313°
• Norco city
8.4 mi, 159°
*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
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