Ontario Flag

Ontario

County:
Richland County
County Seat:
No
Area (mi²):
11.084
State:
Ohio

Ontario is a city located in Richland County, Ohio. Ontario has a 2026 population of 6,648. Ontario is currently declining at a rate of -0.09% annually and its population has decreased by -0.3% since the most recent census, which recorded a population of 6,668 in 2020.

6.6K
Total Population
600
Density (mi²)
-6 -0.09%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)