States Bordering Oklahoma: The Six Neighbors

Oklahoma sits at the crossroads of the Great Plains, Ozarks, and Southwest. It shares borders with **six states**—here they are, clockwise from north:

1. Colorado — North (short border, NW corner)
2. Kansas — North (long border, 37th parallel)
3. Missouri — Northeast (small corner, Missouri River)
4. Arkansas — East (Ouachita Mountains, Red River)
5. Texas — South & West (Red River, 540 mi — longest border)
6. New Mexico — West (short border, NW panhandle)

Quick Facts

• Total border length: ~1,550 miles.
• Only state touching both Colorado & Texas.
• Tri-state points: OK-KS-MO (SW MO), OK-CO-NM (Black Mesa area), OK-TX-NM (far NW TX panhandle).
• No international border.

Regional Context

Oklahoma is a **transition zone**:

• North → Plains (KS, CO)
• East → Ozarks/South (AR, MO)
• South/West → Southwest (TX, NM)

Six neighbors, one panhandle, zero oceans. Oklahoma is the hinge.