Turnersville, NJ has a population of 3,396 and is the 8,194th largest city in the United States. The population density is 2,284 per sq mi which is 228320% higher than the New Jersey average and 2421% higher than the national average. The median age in Turnersville is 38 which is approximately 4% lower than the New Jersey average of 40. In Turnersville, 66% of the population over 15 years of age are married, 94% speak English and 0% speak Spanish. 53% of Turnersville residents were born in New Jersey, 43% were born out of state, 1% were born outside of the United States and 3% were foreign born.