| Zip Code : | 80503 |
| City : | Boulder city, Gunbarrel, Longmont city, Lyons town, Niwot |
| County : | Larimer County, Boulder County |
| State : | Colorado (CO) |
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| Land Area : | 91.07 sq mi |
| Water Area : | 3.07 sq mi |
| Latitude : | 40.1690141 |
| Longitude : | -105.2103757 |
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| Population (2010): | 31,064 |
| Population Estimate (2012) : | 31,275 |
| Population Density : | 341.10/sq mi |
| Housing Units (2012) : | 13,294 |
| Median Household Income (2012) : | $79,493 (Colorado : $58,244, USA : $53,046) |
| Median Family Income (2012) : | $102,942 (Colorado : $72,455, USA : $64,585) |
| Median House Price (2012) : | $352,400 (Colorado : $236,800, USA : $181,400) |