Collin County On a USA Map

Collin County is a county in the U.S. state of Texas. It is part of the Dallas-Fort Worth-Arlington metropolitan statistical area, and a small part of Dallas is in the county. At the 2020 United States census, the county's population was 1,064,465, making it Texas's sixth-most populous county and the 43rd-largest county by population in the United States. Its co…
Collin County is a county in the U.S. state of Texas. It is part of the Dallas-Fort Worth-Arlington metropolitan statistical area, and a small part of Dallas is in the county. At the 2020 United States census, the county's population was 1,064,465, making it Texas's sixth-most populous county and the 43rd-largest county by population in the United States. Its county seat is McKinney.
  • Country: United States
  • State: Texas
  • Founded: 1846
  • Named for: Collin McKinney
  • Seat: McKinney
  • Largest city: Plano
  • Congressional districts: 3rd, 4th, 32nd
Data from: en.wikipedia.org