Carbon, TX has a population of 481 and is the 19,775th largest city in the United States. The population density is 470 per sq mi which is 384% higher than the Texas average and 418% higher than the national average. The median age in Carbon is 27 which is approximately 22% lower than the Texas average of 34. In Carbon, 54% of the population over 15 years of age are married, 48% speak English and 52% speak Spanish. 59% of Carbon residents were born in Texas, 15% were born out of state, 0% were born outside of the United States and 26% were foreign born.