Corpus Christi, Texas is 18% larger than Portland, Oregon.
Area: 443 km2 calculated
Corpus Christi is a coastal city in the South Texas region of the U.S. state of Texas. The county seat of Nueces County, it also extends into Aransas, Kleberg, and San Patricio counties. The metropolitan area US Census estimated population in 2013, was 442,600. Wikipedia
Area: 376 km2 calculated
Portland is the largest city by population in the U.S. state of Oregon, near the confluence of the Willamette and Columbia rivers. Wikipedia