Swagelok Southwest Service Area
| Arizona |
All Counties |
| Nevada | Clark, Lincoln and Nye |
| New Mexico | Bernalillo, Catron, Cibola, De Baca, Guadalupe, Harding, Lincoln, Los Alamos, McKinley, Mora, Rio Arriba, San Juan, San Miguel, Sandoval, Santa Fe, Socorro, Taos, Torrance, and Valencia |
| Colorado | Montezuma, La Plata and Archuleta |