Greatwood, TX has a population of 12,040 and is the 3,413th largest city in the United States. The population density is 4,579 per sq mi which is 4624% higher than the Texas average and 4954% higher than the national average. The median age in Greatwood is 40 which is approximately 18% higher than the Texas average of 34. In Greatwood, 74% of the population over 15 years of age are married, 83% speak English and 7% speak Spanish. 55% of Greatwood residents were born in Texas, 31% were born out of state, 1% were born outside of the United States and 13% were foreign born.