- Union, ME
- Uvalde, TX
- Ulster, PA
- Union, MS
- Union City, GA
- Umatilla, OR
- Utica, OH
- Union City, CA
- U S A F Academy, CO
- Unionville, IA
- Union Gap, WA
- Upland, CA
- Upper Salmon Creek, NB
- Uniontown, OH
- Utica, KY
- Upper Rawdon, NS
- Uxbridge, MA
- Unionville, ON
- Uxbridge, ON
- Upper Lake, CA
- Union, SC
- Uncasville, CT
- Upper Brookside, NS
- Urbana, IL
- Union, NJ
- Urbana, OH
- Union City, NJ
- Umatilla, FL
- Utica, PA
- Ucon, ID
- Union City, OH
- Utica, NY
- Ukiah, CA
- Urbana, IA
- Union Point, GA
- Utopia, ON
- Union, KY
- Uniontown, PA
- Upper Hammonds Plains, NS
- Upton, MA
- Upper Black Eddy, PA
- Upper Marlboro, MD
- Union, MO
- Underwood, IN
- Underwood, WA
- Unity, ME
- Union City, TN
- Universal City, TX
- Union, MI
- Upton, NY