Dimmitt, TX has a population of 4,317 and is the 7,094th largest city in the United States. The population density is 1,370 per sq mi which is 1314% higher than the Texas average and 1412% higher than the national average. The median age in Dimmitt is 33 which is approximately 4% lower than the Texas average of 34. In Dimmitt, 62% of the population over 15 years of age are married, 43% speak English and 55% speak Spanish. 69% of Dimmitt residents were born in Texas, 7% were born out of state, 1% were born outside of the United States and 23% were foreign born.