Opp, AL has a population of 6,635 and is the 5,372nd largest city in the United States. The population density is 280 per sq mi which is 205% higher than the Alabama average and 209% higher than the national average. The median age in Opp is 42 which is approximately 9% higher than the Alabama average of 39. In Opp, 59% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 76% of Opp residents were born in Alabama, 22% were born out of state, 1% were born outside of the United States and 1% were foreign born.