Lafayette, Louisiana is 2.3 times larger than Manhattan (NYC borough).
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
Area: 59 km2 calculated
Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia