Port O'Connor, TX has a population of 1,042 and is the 14,893rd largest city in the United States. The population density is 261 per sq mi which is 169% higher than the Texas average and 188% higher than the national average. The median age in Port O'Connor is 36 which is approximately 5% higher than the Texas average of 34. In Port O'Connor, 73% of the population over 15 years of age are married, 75% speak English and 25% speak Spanish. 72% of Port O'Connor residents were born in Texas, 16% were born out of state, 0% were born outside of the United States and 12% were foreign born.