Petal, MS has a population of 10,736 and is the 3,743rd largest city in the United States. The population density is 640 per sq mi which is 939% higher than the Mississippi average and 607% higher than the national average. The median age in Petal is 37 which is approximately equal to the Mississippi average of 37. In Petal, 59% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 69% of Petal residents were born in Mississippi, 27% were born out of state, 0% were born outside of the United States and 5% were foreign born.