If 600,000 (El Paso) is small, then count that as 3 small towns, if you wish. Sunland Park.NM and Santa Teresa, NM are essentially suburbs of El Paso, TX. There are literally neighborhoods that on one side of the street you are in Texas, the other side you are in New Mexico. A major street on the west side of El Paso is called Sunland Park Drive - it's called that because it leads right through the middle of Sunland Park. Believe what you want (this BS story, for example) but I drive through this area at least 2-3 times a month and the claims made in this story are 100% false.