Cities included in Dallas County: Dallas, Irving, Garland, Grand Prairie, Mesquite, Carrollton, Richardson, Rowlett, DeSoto, Cedar Hill, Coppell, Lancaster, Duncanville, Farmers Branch, Balch Springs, Sachse, University Park, Seagoville, Addison, Glenn Heights, Highland Park, Sunnyvale, Hutchins, Wilmer, Cockrell Hill, Bear Creek Ranch

Zip Codes included in Dallas County: 75001, 75006, 75019, 75038, 75039, 75040, 75041, 75042, 75043, 75044, 75048, 75050, 75051, 75052, 75054, 75060, 75061, 75062, 75063, 75080, 75081, 75088, 75089, 75104, 75115, 75116, 75134, 75137, 75141, 75146, 75149, 75150, 75159, 75172, 75180, 75181, 75182, 75201, 75202, 75203, 75204, 75205, 75206, 75207, 75208, 75209, 75210, 75211, 75212, 75214, 75215, 75216, 75217, 75218, 75219, 75220, 75223, 75224, 75225, 75226, 75227, 75228, 75229, 75230, 75231, 75232, 75233, 75234, 75235, 75236, 75237, 75238, 75240, 75241, 75243, 75244, 75246, 75247, 75248, 75249, 75251, 75253, 75254, 75270, 75390