RVParkStore.com has 1 RVs for Sale in Washington County, CO. Find the perfect RV, camper, or motorhome in Washington County, CO. The current average listing price is around $33,500. RV prices in Washington County, CO have remained unchanged at approximately 0% compared to the 12-month average price of $33,500. Listing prices currently range from about $33,500 to $33,500 depending on the size, age, and mileage of the vehicle.