Farmingdale, NJ has a population of 1,479 and is the 12,773rd largest city in the United States. The population density is 2,842 per sq mi which is 284096% higher than the New Jersey average and 3037% higher than the national average. The median age in Farmingdale is 35 which is approximately 12% lower than the New Jersey average of 40. In Farmingdale, 47% of the population over 15 years of age are married, 87% speak English and 7% speak Spanish. 67% of Farmingdale residents were born in New Jersey, 21% were born out of state, 1% were born outside of the United States and 11% were foreign born.