Duncanville is a city in southwestern Dallas County, Texas, United States. Duncanville's population was 40,706 at the 2020 census. The city is part of the Best Southwest area, which includes Duncanville, Cedar Hill, DeSoto, and Lancaster.
AdCompare Hotel Rooms in Duncanville, Texas. View Deals and Reserve Now on Expedia. Intuitive Trip Planning Allows You to Get More Travel with Less Stress.