Roll is a
populated place
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a ...
in central
Yuma County,
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a U.S. state, state in the Southwestern United States. It is the list of U.S. states and territories by area, 6th largest and the list of U.S. states and territories by population, 14 ...
, United States. It is part of the
Yuma Metropolitan Statistical Area
In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally Incorporated town, incorporate ...
. Named for early settler John H. Roll,
it lies along the lower
Gila River
The Gila River (; O'odham ima Keli Akimel or simply Akimel, Quechan: Haa Siʼil, Maricopa language: Xiil) is a tributary of the Colorado River flowing through New Mexico and Arizona in the United States. The river drains an arid watershed of ...
in the
Mohawk Valley
The Mohawk Valley region of the U.S. state of New York is the area surrounding the Mohawk River, sandwiched between the Adirondack Mountains and Catskill Mountains, northwest of the Capital District. As of the 2010 United States Censu ...
, between the
Yuma Proving Ground
Yuma Proving Ground (YPG) is a United States Army series of environmentally specific test centers with its Yuma Test Center being one of the largest military installations in the world. It is subordinate to the U.S. Army Test and Evaluation C ...
and the
Barry M. Goldwater Air Force Range
The Barry M. Goldwater Air Force Range or Barry M. Goldwater Range (BMGR), formerly known as Luke Air Force Range, is a bombing range in the U.S. state of Arizona, between the Mexico–United States border and Interstate 8 straddling the Cabeza ...
. It is located along the
Union Pacific Railroad
The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of C