Collin-County

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Welcome to Collin County, one of the fastest growing counties in Texas and the nation! More than 1,000,000 people and growing. We've posted the following basic information to get you the basic facts of our county, such as ...

County Seat: McKinney
Area: 848 sq. miles of land, 38 sq. miles of water
Towns and Cities: 27
Estimated Population (2017): 969,603
New residents moving in each day (2017): 75
Paved County Roads: 726 miles
Median Family Income (2017): $105,954
Average Taxable Home Value (2018): $344,382
Independent School Districts: 21
Special Districts: 2
Hospital Districts: None
County-level Elected Officials: 38
Registered Voters (2016): 540,084
Voter Turnout (November 2016): 68%

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Collin-County Contact Information:

  • 825 N Mcdonald St
    Ste 100
    Mckinney, TX 75069
  • Map
  • Phone: (972) 548-5576
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  • Hours

    Monday 8:00 am - 4:30 pm
    Tuesday 8:00 am - 5:00 pm
    Wednesday 8:00 am - 4:30 pm
    Thursday 8:00 am - 5:00 pm
    Friday 8:00 am - 4:30 pm