The Best Southwest is a term commonly applied to four Dallas suburbs – Cedar Hill, DeSoto, Duncanville, and Lancaster – in southwestern Dallas County, Texas (USA). As of the 2000 census, the area had a population of 131,714 (though a January 1, 2010 North Central Texas Council of Governments estimate placed the population at 171,750).
The term "Best Southwest" was first used when the Cedar Hill, DeSoto, Duncanville, and Lancaster chambers of commerce formed a partnership to improve cooperation between the cities. They formed the Best Southwest Chamber Partnership in 1986, and it was incorporated in 1990.
The four municipalities, which are similar in population and form one of the most demographically diverse regions in the Dallas-Fort Worth Metroplex, frequently work together on local events and projects.
Read more about Best Southwest: Major Highways, Demographics