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What county is Dallas, TX in?

Updated · Data: U.S. Census Bureau

Dallas, Texas is in 3 counties. Most residents (93.8%) live in the Dallas County part; the rest live in Collin County and Denton County. Dallas mailing addresses (ZIP codes named Dallas) also reach Tarrant County, so check your street.

Which counties do Dallas residents live in?

CountyShare of residentsChart
Dallas County93.8% (1,218,348 people)
Collin County4.0% (52,320 people)
Denton County2.2% (28,885 people)

How is Dallas's land split between counties?

CountyShare of land areaChart
Dallas County90.1%
Rockwall County5.4%
Collin County3.1%
Kaufman County0.8%
Denton County0.6%

Inside Dallas, the county depends on the address: check your address privately. See all Texas cities in more than one county or look up another city.

Dallas at a glance

Population1,299,553Largest place in Dallas County
Land area339.7 sq mi3,826 people per sq mi
Share of Dallas County47%of the county's residents live here
County seatYes
Time zoneCentralAmerica/Chicago

What ZIP codes are in Dallas?

105 ZIP codes use the name Dallas or are centered in it. Shares are of each ZIP's land; a ZIP named after a town can reach beyond its city limits.

ZIPPost office nameCounty (land share)
75201DallasDallas County
75202DallasDallas County
75203DallasDallas County
75204DallasDallas County
75205DallasDallas County
75206DallasDallas County
75207DallasDallas County
75208DallasDallas County
75209DallasDallas County
75210DallasDallas County
75211DallasDallas County
75212DallasDallas County
75214DallasDallas County
75215DallasDallas County
75216DallasDallas County
75217DallasDallas County
75218DallasDallas County
75219DallasDallas County
75220DallasDallas County
75221DallasDallas County
75222DallasDallas County
75223DallasDallas County
75224DallasDallas County
75225DallasDallas County
75226DallasDallas County
75227DallasDallas County
75228DallasDallas County
75229DallasDallas County
75230DallasDallas County
75231DallasDallas County
75232DallasDallas County
75233DallasDallas County
75234DallasDallas County
75235DallasDallas County
75236DallasDallas County
75237DallasDallas County
75238DallasDallas County
75240DallasDallas County
75241DallasDallas County
75242DallasDallas County
75243DallasDallas County
75244DallasDallas County
75246DallasDallas County
75247DallasDallas County
75248DallasDallas County 99%, Collin County 1%
75249DallasDallas County
75250DallasDallas County
75251DallasDallas County
75252DallasCollin County 92%, Dallas County 8%
75253DallasDallas County
75254DallasDallas County
75260DallasDallas County
75261DallasTarrant County
75262DallasDallas County
75263DallasDallas County
75264DallasDallas County
75265DallasDallas County
75266DallasDallas County
75267DallasDallas County
75270DallasDallas County
75275DallasDallas County
75277DallasDallas County
75283DallasDallas County
75284DallasDallas County
75285DallasDallas County
75287DallasCollin County 58%, Denton County 42%
75301DallasDallas County
75303DallasDallas County
75312DallasDallas County
75313DallasDallas County
75315DallasDallas County
75320DallasDallas County
75326DallasDallas County
75336DallasDallas County
75339DallasDallas County
75342DallasDallas County
75354DallasDallas County
75355DallasDallas County
75356DallasDallas County
75357DallasDallas County
75358DallasDallas County
75359DallasDallas County
75360DallasDallas County
75367DallasDallas County
75368DallasDallas County
75370DallasDallas County
75371DallasDallas County
75372DallasDallas County
75373DallasDallas County
75374DallasDallas County
75376DallasDallas County
75378DallasDallas County
75379DallasDallas County
75380DallasDallas County
75381DallasDallas County
75382DallasDallas County
75389DallasDallas County
75390DallasDallas County
75391DallasDallas County
75392DallasDallas County
75393DallasDallas County
75394DallasDallas County
75395DallasDallas County
75397DallasDallas County
75398DallasDallas County

About Dallas County

County seat: Dallas. FIPS code 48113. Population 2,603,816. All Dallas County facts.

Towns near Dallas

  • Highland Park: 3.3 mi away, Dallas County
  • University Park: 4.2 mi away, Dallas County
  • Cockrell Hill: 8.1 mi away, Dallas County
  • Balch Springs: 10 mi away, Dallas County
  • Mesquite: 11 mi away, Dallas County
  • Hutchins: 11 mi away, Dallas County

Dallas has about 1,299,553 people. It is an incorporated city or town.

Sources: ACS 2019-2023 5-year (residents by county, table B01003); Census TIGER/Line 2024 and Gazetteer 2024 (land, location); Census 2020 ZCTA file and GeoNames (ZIP codes). Data as of November 1, 2026. Not affiliated with any government agency.

FAQ

Frequently asked questions

What county is Dallas, TX in?
Dallas, Texas is in 3 counties. Most residents (93.8%) live in the Dallas County part; the rest live in Collin County and Denton County. Dallas mailing addresses (ZIP codes named Dallas) also reach Tarrant County, so check your street. The county seat of Dallas County is Dallas.
Is Dallas in more than one county?
Yes. 3 counties: Dallas County (93.8% of residents), Collin County (4.0% of residents), Denton County (2.2% of residents).
What ZIP codes are in Dallas, TX?
75201, 75202, 75203, 75204, 75205, 75206, 75207, 75208, 75209, 75210, 75211, 75212, 75214, 75215, 75216, 75217, 75218, 75219, 75220, 75221, 75222, 75223, 75224, 75225, 75226, 75227, 75228, 75229, 75230, 75231, 75232, 75233, 75234, 75235, 75236, 75237, 75238, 75240, 75241, 75242, 75243, 75244, 75246, 75247, 75248, 75249, 75250, 75251, 75252, 75253, 75254, 75260, 75261, 75262, 75263, 75264, 75265, 75266, 75267, 75270, 75275, 75277, 75283, 75284, 75285, 75287, 75301, 75303, 75312, 75313, 75315, 75320, 75326, 75336, 75339, 75342, 75354, 75355, 75356, 75357, 75358, 75359, 75360, 75367, 75368, 75370, 75371, 75372, 75373, 75374, 75376, 75378, 75379, 75380, 75381, 75382, 75389, 75390, 75391, 75392, 75393, 75394, 75395, 75397, 75398.
Is Dallas the county seat of Dallas County?
Yes.
What time zone is Dallas, TX in?
Central time (America/Chicago).
How do I know which county my Dallas address is in?
Use the address lookup at your home, or check your appraisal district record.

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