States Bordering Oklahoma: Six Neighbors

Oklahoma touches 6 states (tied for 2nd most with Tennessee; Missouri has 8).

1. Colorado — NW corner (short border)
2. Kansas — North (long border, 37th parallel)
3. Missouri — NE corner (tiny tri-point)
4. Arkansas — East
5. Texas — South (Red River border)
6. New Mexico — West (narrow panhandle strip)

Geographic Context

• Transition zone: Great Plains → Ozarks → Cross Timbers
• Red River (south) & Arkansas River (east) = major boundaries
• No natural borders with CO, KS, MO, NM — survey lines

Tri-Points

• OK-KS-MO (near Joplin)
• OK-AR-MO (near Fort Smith)
• OK-TX-NM (near Texline)