Cisco, TX has a population of 3,814 and is the 7,659th largest city in the United States. The population density is 770 per sq mi which is 694% higher than the Texas average and 750% higher than the national average. The median age in Cisco is 43 which is approximately 26% higher than the Texas average of 34. In Cisco, 47% of the population over 15 years of age are married, 94% speak English and 6% speak Spanish. 82% of Cisco residents were born in Texas, 17% were born out of state, 0% were born outside of the United States and 0% were foreign born.