Putnam, TX has a population of 70 and is the 27,654th largest city in the United States. The population density is 69 per sq mi which is 29% lower than the Texas average and 24% lower than the national average. The median age in Putnam is 52 which is approximately 51% higher than the Texas average of 34. In Putnam, 19% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 90% of Putnam residents were born in Texas, 10% were born out of state, 0% were born outside of the United States and 0% were foreign born.