Cahill is a small, unincorporated community located in Minnesota, specifically within Washington County. It is situated near the St. Croix River, which serves as a natural boundary between Minnesota and Wisconsin. The area is primarily residential, with a mix of rural and suburban characteristics. The community is part of the Twin Cities metropolitan area, providing residents with access to urban amenities while maintaining a quieter, small-town atmosphere. Nearby towns include Stillwater and Lake Elmo, which offer additional services and recreational opportunities for Cahill's residents.