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What county is Plano, TX in?

Updated · Data: U.S. Census Bureau

Plano, Texas is in 2 counties. Most residents (98.1%) live in the Collin County part; the rest live in Denton County.

Which counties do Plano residents live in?

CountyShare of residentsChart
Collin County98.1% (281,736 people)
Denton County1.9% (5,603 people)

How is Plano's land split between counties?

CountyShare of land areaChart
Collin County96.4%
Denton County3.6%

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

Plano at a glance

Population287,3392nd largest place in Collin County
Land area71.7 sq mi4,008 people per sq mi
Share of Collin County25%of the county's residents live here
County seatMcKinney11 mi from Plano
Time zoneCentralAmerica/Chicago

What ZIP codes are in Plano?

9 ZIP codes use the name Plano 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)
75023PlanoCollin County
75024PlanoCollin County 88%, Denton County 12%
75025PlanoCollin County
75026PlanoCollin County
75074PlanoCollin County
75075PlanoCollin County
75086PlanoCollin County
75093PlanoCollin County 90%, Denton County 10%
75094PlanoCollin County

About Collin County

County seat: McKinney. FIPS code 48085. Population 1,116,601. All Collin County facts.

Towns near Plano

  • Richardson: 5.9 mi away, Dallas County
  • Allen: 6.0 mi away, Collin County
  • Parker: 7.1 mi away, Collin County
  • Addison: 7.8 mi away, Dallas County
  • Frisco: 8.4 mi away, Collin County
  • Murphy: 8.4 mi away, Collin County

Plano has about 287,339 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 Plano, TX in?
Plano, Texas is in 2 counties. Most residents (98.1%) live in the Collin County part; the rest live in Denton County. The county seat of Collin County is McKinney.
Is Plano in more than one county?
Yes. 2 counties: Collin County (98.1% of residents), Denton County (1.9% of residents).
What ZIP codes are in Plano, TX?
75023, 75024, 75025, 75026, 75074, 75075, 75086, 75093, 75094.
Is Plano the county seat of Collin County?
No. The county seat is McKinney, about 11 mi away.
What time zone is Plano, TX in?
Central time (America/Chicago).
How do I know which county my Plano address is in?
Use the address lookup at your home, or check your appraisal district record.

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