Collin County is a county in the U.S. state of Texas. As of the 2010 United States Census, the county’s population was 782,341, making it the seventh-most populous county in Texas and the 45th-largest county by population in the United States. The 2017 Census Bureau estimate for Collin County’s population was 969,603, and reached 1,005,146 in 2018. Its county seat is McKinney.
According to the U.S. Census Bureau, the county has an area of 886 square miles (2,290 km), of which 841 square miles (2,180 km) is land and 45 square miles (120 km) (5.1%) is covered by water.
As of the 2015 Texas Population Estimate Program, the population of the county was 923,201, non-Hispanic whites 535,165 (57.9%). Black Americans 84,858 (9.2%). Other non-Hispanic 146,109 (15.8%). Hispanics and Latinos (of any race) 157,069 (17.0%).
As of the census of 2010, there were 782,341 people.
According to U.S. Census figures released in 2006, the racial makeup of the county was as follows: 77.21% White, 7.26% African American, 10.02% Asian, 0.45% Native American, 5.06% of other or mixed race. 12.8% Hispanic of any race.
As of the census of 2000, there were 491,675 people, 181,970 households, and 132,292 families residing in the county. The population density was 580 people per square mile (224/km²). There were 194,892 housing units at an average density of 230 per square mile (89/km²). The racial makeup of the county was 81.39% White, 4.79% Black or African American, 0.47% Native American, 6.92% Asian, 0.05% Pacific Islander, 4.26% from other races, and 2.11% from two or more races. 10.27% of the population were Hispanic or Latino of any race.
There were 181,970 households out of which 40.60% had children under the age of 18 living with them, 62.10% were married couples living together, 7.50% had a female householder with no husband present, and 27.30% were non-families. 22.10% of all households were made up of individuals and 3.10% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.18. As of the 2010 census, there were about 4.4 same-sex couples per 1,000 households in the county.
In the county, the population was spread out with 28.70% under the age of 18, 7.40% from 18 to 24, 37.90% from 25 to 44, 20.70% from 45 to 64, and 5.30% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 99.80 males. For every 100 females age 18 and over, there were 97.80 males.
The median income for a household in the county was $70,835, and the median income for a family was $81,856 (these figures had risen to $77,671 and $91,881 respectively as of a 2007 estimate). Males had a median income of $57,392 versus $36,604 for females. The per capita income for the county was $33,345. About 3.30% of families and 4.90% of the population were below the poverty line, including 5.10% of those under age 18 and 7.10% of those age 65 or over. Based on median household income, as of 2006, Collin County is the second richest county in Texas after Fort Bend, and is considered one of the wealthiest counties in the United States.
However, Collin – like other Texas counties – has one of the nation’s highest property tax rates. In 2007, it was #21 for property taxes as percentage of the homes value on owner occupied housing. It also ranked in the Top 100 for amount of property taxes paid and for percentage of taxes of income. Part of this is due to the Robin Hood plan school financing system in Texas.