Cactus, TX
Urban cluster

Ulysses, KS
Urban cluster

Scottsbluff, NE
Urban cluster

Shallowater, TX

Lubbock, TX
Urbanized area

Seminole, TX

Plainview, TX

Slaton, TX

Littlefield, TX

Liberal, KS

Dimmitt, TX

Denver City, TX

Alliance, NE

Abernathy, TX

Garden City, KS

Hugoton, KS