Odessa, TX has a population of 114,258 and is the 246th largest city in the United States. The population density is 2,529 per sq mi which is 2509% higher than the Texas average and 2691% higher than the national average. The median age in Odessa is 31 which is approximately 10% lower than the Texas average of 34. In Odessa, 54% of the population over 15 years of age are married, 58% speak English and 40% speak Spanish. 69% of Odessa residents were born in Texas, 17% were born out of state, 1% were born outside of the United States and 13% were foreign born.