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