Grants Pass is a city in, and the county seat of Josephine County, Oregon, United States . The city is located on Interstate 5, northwest of Medford. Attractions include the Rogue River, famous for its rafting, and the nearby Oregon Caves National Monument located 30 miles (48 km) south of the city. The population was 23,003 at the 2000 census, with an estimated population of 34,237 in 2007.