In 1968, Estavillo applied to become an officer in the New York Police Department and graduated from the New York Police Academy after six months of training. His first assignment as a Police Officer was at the 19th Precinct located at East 67th Street on the Upper East Side of
Manhattan. The population density of the 19th Precinct is one of the highest in the United States, with residents estimated at 217,063. In 1988, Estavillo graduated from the
FBI National Academy at
Quantico, Virginia. Back with the NYPD, he rose in rank throughout the years and served as Precinct Patrol Sergeant and Precinct Lieutenant/Platoon Commander at the 24th Precinct. As Captain, he served as Commanding Officer of the 34th Precinct covering the
Manhattan neighborhoods of
Washington Heights and
Inwood. By 1993 he was promoted to Inspector and Deputy Chief, Commanding Officer Fifth Division, covering the
Upper West Side of Manhattan. In 1995 he was promoted to two star Assistant Chief and designated Commanding Officer, Patrol Borough Manhattan North which includes the neighborhoods and 12 precincts north of 59th Street in Manhattan. There he served until promotion to Chief of Patrol in 2002. The majority of the population in that district are of Hispanic origin. ==NYPD Chief of Patrol==