The Ontario Justice Court is the Ontario branch of the Malheur Justice Court. The Ontario Justice Court and the Ontario Municipal Court share the same street location, same mailing address, same phone number and are served by the same judge. Ontario city has Interstate Hway 84 running through the Eastern part of town, OR201 running through the Western part of town and United States Hway 30 dividing it into North and South parts.

With a population numbering over 10,000 residing in close to 4 1/2 square miles; Ontario is the largest city in Malheur county. Its Treasure Valley Community college prepares students for employment in professions such as agriculture, construction computer science, nursing and the performing arts. The annual Japan Nite Obon Festival commemorates ancestors and the tie which local Japanese Americans have to Japan. The festival is the place to enjoy traditional Japanese food, dance, music and dress. The Ontario Municipal airport located just outside the Western edge of town is a public airport operated by the city of Ontario. It has a good sized runway over 5000 feet in length and is next to the Ontario Golf club.

Hon. Terry Thompson who also serves in the Municipal courts of Ontario and Nyssa and the Nyssa branch of the Malheur Justice court.