Midfield, AL has a population of 5,260 and is the 6,237th largest city in the United States. The population density is 1,982 per sq mi which is 2055% higher than the Alabama average and 2088% higher than the national average. The median age in Midfield is 36 which is approximately 6% lower than the Alabama average of 39. In Midfield, 46% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 86% of Midfield residents were born in Alabama, 12% were born out of state, 0% were born outside of the United States and 2% were foreign born.