Amarillo, Texas is 20% larger than Baton Rouge, Louisiana.
Area: 257 km2 calculated
Amarillo is the fourteenth most populous city in the state of Texas, also the largest City in the Texas Panhandle, and the seat of Potter County. A portion of the city extends into Randall County. The population was 190,695 at the 2010 census. Wikipedia
Area: 214 km2 calculated
Baton Rouge, French for "Red Stick," is the capital of the U.S. state of Louisiana and its second-largest city. The seat of East Baton Rouge Parish, the city is located on the banks of the Mississippi River. Wikipedia