Dallas Texas Population 2024 By County. Dallas county, texas is bordered by. Dallas county, texas has 873.2 square miles of land area and is the 177th largest county in texas by total area.

Dallas county, tarrant county, bexar county and travis county make up the rest of the top five most populous counties in texas, with each having populations of more than a. The ages, races, and population density of dallas county, texas tell a story.