Dalhart, TX has a population of 8,357 and is the 4,547th largest city in the United States. The population density is 1,745 per sq mi which is 1700% higher than the Texas average and 1826% higher than the national average. The median age in Dalhart is 33 which is approximately 3% lower than the Texas average of 34. In Dalhart, 57% of the population over 15 years of age are married, 72% speak English and 26% speak Spanish. 57% of Dalhart residents were born in Texas, 29% were born out of state, 0% were born outside of the United States and 13% were foreign born.