Portland, Oregon is 30% larger than Abilene, Texas.
Area: 289 km2 calculated
Abilene is a city in Taylor and Jones counties in west central Texas. The population was 117,063 according to the 2010 census making it the twenty-seventh most populous city in the state of Texas. 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