Baton Rouge, Louisiana is 56% larger than Lafayette, Louisiana.
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
Area: 138 km2 calculated
Lafayette is a city located along the Vermilion River in southwestern Louisiana. The city of Lafayette is the fourth-largest in the state, with a population of 120,623 at the 2010 census. The combined statistical area of Lafayette–Opelousas-Morgan City was 611,774 according to 2012 estimates. Wikipedia