RVParkStore.com has 1 RVs for Sale in Hillsborough County, MT. Find the perfect RV, camper, or motorhome in Hillsborough County, MT. The current average listing price is around $110,000. RV prices in Hillsborough County, MT have remained unchanged at approximately 0% compared to the 12-month average price of $110,000. Listing prices currently range from about $110,000 to $110,000 depending on the size, age, and mileage of the vehicle.