Boulder is located in the north-central part of Colorado and is the seat of Boulder County, and Boulder was situated at the base of the Flatiron Range of the Rocky Mountains just northwest of the city of Denver. The town was first settled by moners and was descriptively named for the nearby Boulder Canyon. Upon the arrival of the railways, the city also grew and became the gateway to mines in the mountains in the western part and was also an agriculture center. After this, the University of Colorado was established. Throughout its history, it became an extensive government-industrial-educational complex that was developed in the 1950s. Boulder was a leading center for scientific and environmental research. It was said that the city's water supply is unique since it comes partly from the Arapahoe Glaciers that are high on the High Divide.
| Population | 103,166 (9.00%) |
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