Dayton, TX has a population of 7,494 and is the 4,938th largest city in the United States. The population density is 355 per sq mi which is 215% higher than the Texas average and 292% higher than the national average. The median age in Dayton is 33 which is approximately 3% lower than the Texas average of 34. In Dayton, 66% of the population over 15 years of age are married, 88% speak English and 8% speak Spanish. 68% of Dayton residents were born in Texas, 24% were born out of state, 0% were born outside of the United States and 7% were foreign born.