New Port Richey is a city in Pasco County, Florida, United States. The population was 16,117 at the 2000 census. As of 2004, the population recorded by the U.S. Census Bureau is 16,675. New Port Richey apartments for rent comparison page shows most up to date rent information on New Port Richey apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.