Jericho, NY has a population of 13,730 and is the 3,043rd largest city in the United States. The population density is 3,480 per sq mi which is 870% higher than the New York average and 3741% higher than the national average. The median age in Jericho is 44 which is approximately 15% higher than the New York average of 38. In Jericho, 68% of the population over 15 years of age are married, 66% speak English and 2% speak Spanish. 67% of Jericho residents were born in New York, 6% were born out of state, 1% were born outside of the United States and 26% were foreign born.