Texas City on the Rio Grande is a term that refers to two cities in Texas, Laredo and El Paso. Laredo is a city located in Webb County, on the north bank of the Rio Grande, and is the county seat of Webb County. El Paso is a city located in El Paso County, on the far western tip of Texas, and is the county seat of El Paso County. Both cities are located along the Rio Grande, which forms part of the border between the United States and Mexico.