Portland is a city primarily located in San Patricio County with some water bodies extending into Nueces County in the U.S. state of Texas. Its population was 20,383 as of the 2020 United States census. Current population calculated by the City of Portland is 22,783. Portland is a suburb of Corpus Christi, located on the north shore of Nueces and Corpus Christi Bays.

San Patricio County is located in the U.S. state of Texas. As of the 2020 census, its population was 68,755. Its county seat is Sinton. San Patricio County is part of the Corpus Christi metropolitan statistical area.