States and States Touched by the Rio Grande

United States (3 states):

• Colorado (headwaters)
• New Mexico
• Texas (border with Mexico)

Mexico (4 states):

• Chihuahua
• Coahuila
• Nuevo León
• Tamaulipas

The Rio Grande forms 1,255 miles of the U.S.–Mexico border before emptying into the Gulf of Mexico. It's a lifeline for agriculture, cities, and ecosystems in an arid region.