What Texas, New Mexico, Arizona, and Oklahoma Have in Common

These four states form the core of the Southwestern United States, sharing geography, climate, economy, and cultural DNA.

1. Climate: Hot, Dry, Extreme

• Arid to semi-arid; low humidity.
• Summer highs often 38–46°C (100–115°F).
• Large diurnal swings (desert nights cool fast).
• Monsoon season (Jul–Sep) brings intense thunderstorms.

2. Landscapes: Deserts, Mesas, Plains

• Chihuahuan Desert (TX, NM).
• Sonoran Desert (AZ, NM).
• Mojave fringe (AZ).
• Llano Estacado (TX, NM) – vast high plains.
• Red Rock Country (AZ, NM) – sandstone canyons, mesas.
• Ouachita Mts (OK) – forested, folded mountains.

3. Agriculture & Livestock

• Cattle: TX (#1 US), OK, NM, AZ all top 20.
• Cotton: TX leads; AZ (Pima), NM.
• Pecans: NM, TX, OK, AZ major producers.
• Chile peppers: NM (Hatch), TX, AZ.
• Irrigation-dependent: Ogallala Aquifer (TX, NM, OK), Colorado River (AZ).

4. Cultural Heritage: Layered Histories

• Indigenous: Pueblo, Navajo, Apache, Comanche, Kiowa, Caddo, Wichita, and dozens more.
• Spanish/Mexican: 1598–1821 (NM, TX, AZ); 1821–1848 (Mexican period). Place names, architecture, law, cuisine.
• Anglo-American: Post-1848 (TX, NM, AZ) / 1889 Land Run (OK). Ranching, oil, railroads.
• Route 66: Crosses all four—icon of westward migration.

5. Energy & Resources

• Oil/Gas: Permian Basin (TX, NM), Anadarko Basin (OK), San Juan Basin (NM).
• Wind/Solar: TX #1 wind; all four top 10 solar potential.
• Uranium (NM), Copper (AZ), Helium (TX).

6. Border & Migration Dynamics

TX, NM, AZ share 1,200+ km with Mexico—shaping demographics, trade, politics. OK has large Native sovereignty jurisdictions.