Circle D-KC Estates, TX has a population of 2,457 and is the 9,951st largest city in the United States. The population density is 265 per sq mi which is 173% higher than the Texas average and 192% higher than the national average. The median age in Circle D-KC Estates is 48 which is approximately 39% higher than the Texas average of 34. In Circle D-KC Estates, 68% of the population over 15 years of age are married, 88% speak English and 12% speak Spanish. 65% of Circle D-KC Estates residents were born in Texas, 27% were born out of state, 1% were born outside of the United States and 7% were foreign born.