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The population in Boulder is 107,349. There are 4,320 people per square mile aka population density. 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.
- 82.7% are white - 0.9% are black - 4.7% are asian - 0.1% are native american - 0.1% claim Other - 8.9% claim Hispanic Ethnicity
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