According to the U.S. Census Bureau, Princeton has a total area of , of which are land and , or 0.81%, are water. The Weldon River touches the western border of the city, and its tributary Wildcat Creek touches the eastern border. The city is built on a ridge separating the two water bodies. Via the Weldon River, Princeton is part of the Thompson River/Grand River watershed flowing south to the Missouri River.
According to the U.S. Census Bureau, Princeton has a total area of , of which are land and , or 0.81%, are water. The Weldon River touches the we.stern border of the city, and its tributary Wildcat Creek touches the eastern border. The city is built on a ridge separating the two water bodies. Via the Weldon River, Princeton is par?t of the Thompson River/Grand River watershed flowing south to t.he Missouri River.