Leonardo is a town located in the New Jersey region of the United States. During the most recent census, Leonardo had a population of 2,757. Leonardo is the 370th most poplulated city in the New Jersey region, the 8,621st most populated city in the United States and the 38,869th most populated city in the world. Leonardo is in the America/New York timezone which is 4 hours behind UTC. Leonardo adjusts the hour with daylight savings time during the winter months.