The Port of Royal Slope is zoned for light to heavy industry offering paved road access, potable water and fire flow protection up to 2400gpm. The lots are “ready to go” for businesses needing a permanent operating location in Grant County.

  • Grant County offers the most inexpensive power and water rates in Central Washington.
  • Our Commercial/Industrial land is also priced to accommodate relocation and new development, as well as great leasing and tax incentive options.

Our lots are custom fitting to any business wishing to build, relocate or expand its operations . Our attitude reflects our character in helping to service you. We want to help you, not the other way around. Make your choice a rewarding event and see why The Port of Royal Slope is the best choice!


Our central location offers great services for logistics in forms of commercial trucking, rail and air.

Located off highway 26 we are just a a few minutes from connecting with Interstate 90. The port also has a rail spur into the industrial park and is currently in negotiation for active service. Our site is central to two regional airports, between Grant County International Airport and Quincy Municipal Airport which provide daily connections to major cities, opening up the international airways. Both airports are easily reached in 30 minutes.


Quick Facts

The Port of Royal Slope was established in 1958 as the 2nd Port District in Grant County where there are currently 10 Ports. Quincy was the 1st Port District to be formed in Grant County and Moses Lake was the 10th. Some Washington Port Districts are County wide. We are a dry land port with our main focus being on economic development.

The Royal Port District boundaries are from the Columbia River on the west side to the Adams County line on the east side and from Frenchman Hills Road on the north side to the Saddle Mountains on the south side, encompassing an area of approximately 400 square miles.

The town of Royal City has a population of approximately 1,800 residents; however, the Port District’s population is approximately 5,603.