Ontario, Oregon

Ontario population, 2020 to 2024

Ontario added 190 residents from July 2020 to July 2024, a change of +1.6%. In the latest year it moved by +24. Among 80 Oregon places of 5,000 or more, that growth ranks 33rd; the median place changed by +0.8%. The median place of 5,000+ in Oregon has 14,915 people, so Ontario is 80% of it.

Ontario covers 5.99 square miles of land, for 1,996 people per square mile of land. The median Oregon place of 5,000+ has 3,097, so Ontario is less dense than the typical town.

What county Ontario is in

All of Ontario's residents live in Malheur County, which had 32,315 residents in 2024. Ontario holds 37.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Ontario

1 ZIP Code Tabulation Area (ZCTA) overlaps Ontario by at least 10% of the ZCTA's or the city's land: 97914. 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 44.025300, -116.977400. Salem, the capital, is 304.9 miles WNW in a straight line. The nearest larger place is Caldwell, ID (73,088 people), 30.6 miles away. The nearest city of 100,000 or more is Nampa, ID, 36.8 miles away.

Daylight in Ontario

At 44.03° N, Ontario gets about 15 h 30 min of daylight around the June solstice and 8 h 53 min around the December solstice, a swing of 6 h 36 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 Oregon, measured between internal points. The closest is Nyssa, 10.2 miles away, with 3,269 people.