Ontario, Ohio

Ontario population, 2020 to 2024

Ontario lost 20 residents from July 2020 to July 2024, a change of -0.3%. In the latest year it moved by -6. Among 254 Ohio places of 5,000 or more, that growth ranks 122nd; the median place changed by -0.4%. The median place of 5,000+ in Ohio has 13,905 people, so Ontario is 48% of it.

Ontario covers 11.08 square miles of land and 0.02 of water, for 600 people per square mile of land. The median Ohio place of 5,000+ has 2,000, so Ontario is less dense than the typical town.

What county Ontario is in

All of Ontario's residents live in Richland County, which had 124,853 residents in 2024. Ontario holds 5.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Ontario

2 ZIP Code Tabulation Areas (ZCTAs) overlap Ontario by at least 10% of the ZCTA's or the city's land: 44903, 44906. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Ontario is

The Census internal point of Ontario is at 40.768200, -82.614800. Columbus, the capital, is 59.3 miles SSW in a straight line. The nearest larger place is Mansfield, OH (47,593 people), 4.4 miles away. The nearest city of 100,000 or more is Columbus, OH, 57.6 miles away.

Daylight in Ontario

At 40.77° N, Ontario gets about 15 h 06 min of daylight around the June solstice and 9 h 15 min around the December solstice, a swing of 5 h 51 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Ontario

The eight nearest incorporated places of 1,000+ in Ohio, measured between internal points. The closest is Mansfield, 4.4 miles away, with 47,593 people.