Matagorda, TX has a population of 434 and is the 20,417th largest city in the United States. The population density is 235 per sq mi which is 143% higher than the Texas average and 160% higher than the national average. The median age in Matagorda is 56 which is approximately 63% higher than the Texas average of 34. In Matagorda, 56% of the population over 15 years of age are married, 95% speak English and 5% speak Spanish. 63% of Matagorda residents were born in Texas, 32% were born out of state, 0% were born outside of the United States and 5% were foreign born.