- County Seat: McKinney
- Area: 848 sq. miles of land; 38 sq. miles of water
- Towns and Cities: 27
- Population 2010 Census: 782,341
- Estimated Population (2018): 1,005,146
- Growth since 2000: 97%
- Growth since 2010: 24%
- Female-to-Male ratio: 51%-49%
- Median age: 36.5 years
- Under 18 years old: 28%
- Over 65 years of age: 9%
- Number of housing units, 2017: 363,568
- Number of households, 2017: 323,195
- Average Family Size (2010): 3.25
- Average Number per Household: 2.74
- Traditional married couple families: 78% of family households
- Number of adults living alone (2011): 37,798
- Median Family Income (2017): $105,954
- New residents moving in each day (2017): 74
- Density: 1,108 people/sq. mile
- Paved County Roads: 726 miles
- Average Taxable Home Value (2018): $344,382
- County Tax Rate (2019): $0.174951 per $100 assessed value
- Independent School Districts: 21
- Special Districts: 2
- Hospital Districts: None
- County-level Elected Officials: 38
- Registered Voters (November 2019): 590,266
- Voter Turnout (November 2019): 11%
- Source: Collin County records
COLLIN COUNTY MAGAZINE IN DFW 