Port Richey is a city in Pasco County, Florida, United States. It is a suburban city included in the Tampa-St. Petersburg-Clearwater, Floriā¦Port Richey is a city in Pasco County, Florida, United States. It is a suburban city included in the Tampa-St. Petersburg-Clearwater, Florida Metropolitan Statistical Area. As of 2020, the city had a population of 3,052.