By 1860, the population was a mere 324. $795,000 ±$41,131 Median value of owner-occupied housing units about 1.3 times the amount in the Boulder, CO Metro Area: $592,000 ±$18,091; about double the amount in Colorado: $394,600 ±$2,695 The current population of Boulder (105,673) is it's peak population. County. The population development of Boulder. There are 4,042 people per square mile aka population density. Name Status Population Census 1990-04-01 Population Census 2000-04-01 Population Census 2010-04-01 ; Boulder: County: 225,339: 269,784: Boulder has grown 11.7% since the 2000. The median age in Boulder is 28.3, the US median age is 37.4.The number of people per household in Boulder is 2.2, the US average of people per household is 2.6.. Family in Boulder - 33.9% are married - 7.9% are divorced - 33.8% are married with children - 12.1% have children, but are single Based on the latest 2020 data from the US census, the current population of Boulder is 105,673. Boulder (County, Colorado, USA) with population statistics, charts, map and location. What was the peak population of Boulder? Boulder (/ ˈ b oʊ l d ər /) is the home rule municipality, county seat, and the most populous municipality of Boulder County, Colorado, United States.Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of 5,430 feet (1,655 m) above sea level. The Boulder area has a highly educated population, with nearly three-fourths of residents holding a bachelor’s degree or higher and approximately 39% of the population holding an … By 1867, Boulder … The population density in Boulder is 7065% higher than Colorado; The median age in Boulder is 21% lower than Colorado; In Boulder 88.06% of the population is White; In Boulder 1.14% of the population is Black; In Boulder 5.30% of the population is Asian Boulder Colorado Population 2020 2019, Boulder Colorado Population 2019, Boulder Colorado Population 2020, Boulder Colorado Demographics 2020 2019, Boulder Colorado Statistics 2020 2019 ... County in Colorado. Population of Boulder, CO. Last official estimated population of Boulder city (Boulder County**, Colorado state) was 105,112 (year 2014) .This was 0.033% of total US population and 1.93% of total Colorado state population. The 1996 Transportation Master Plan was based on a land use projection that called for a 2020 population of about 118,000 for the Boulder Valley and an employment of 111,000. How quickly is Boulder growing? At that time, Boulder City was part of the Nebraska Territory. At this price, only a few lots were sold and thus Boulder's growth rate remained extremely slow. The population in Boulder is 106,271. Full demographic report of Boulder, CO population including education levels, household income, job market, ethnic makeup, and languages. The city is located 25 miles (40 km) northwest of Denver. As the figure shows, Boulder is near those levels today. Boulder, Colorado is the 291st largest city in the US. It was not until February of 1861 that a Federal Bill established the Territory of Colorado.