Short Hills, NJ has a population of 12,771 and is the 3,255th largest city in the United States. The population density is 2,433 per sq mi which is 243200% higher than the New Jersey average and 2585% higher than the national average. The median age in Short Hills is 42 which is approximately 7% higher than the New Jersey average of 40. In Short Hills, 79% of the population over 15 years of age are married, 76% speak English and 2% speak Spanish. 36% of Short Hills residents were born in New Jersey, 44% were born out of state, 2% were born outside of the United States and 18% were foreign born.