Nuevo Laredo is a city in the Municipality of Nuevo Laredo in the Mexican state of Tamaulipas. The city lies on the banks of the Rio Grande, across from the U.S. city of Laredo, Texas. The 2010 census population of the city was 373,725. Nuevo Laredo is part of the Laredo-Nuevo Laredo Metropolitan Area with a population of 636,516. The municipality has an area of. Both the city and the municipality rank as the third largest in the state.