| County : | Boulder County |
| State : | Colorado (CO) |
| Land Area : | 726.29 sq mi |
| Water Area : | 14.08 sq mi |
| Latitude : | 40.0948262 |
| Longitude : | -105.3983824 |
| Population (2010): | 294,567 |
| Population Estimate (2012) : | 297,218 |
| Population Density : | 405.58/sq mi |
| Housing Units (2012) : | 127,071 |
| Median Household Income (2012) : | $67,403 (Colorado : $58,244, USA : $53,046) |
| Median Family Income (2012) : | $92,788 (Colorado : $72,455, USA : $64,585) |
| Median House Price (2012) : | $354,300 (Colorado : $236,800, USA : $181,400) |
Boulder County Cities / Towns
| Allenspark (528) | Altona (501) | Bark Ranch (213) |
| Bonanza Mountain Estates (128) | Boulder City (97,385) | Coal Creek (2,400) |
| Crisman (186) | Eldora (142) | Eldorado Springs (585) |
| Erie Town (18,135) | Glendale (69) | Gold Hill (230) |
| Gunbarrel (9,263) | Hidden Lake (31) | Jamestown Town (274) |
| Lafayette City (24,453) | Lazy Acres (920) | Leyner (29) |
| Longmont City (86,270) | Louisville City (18,376) | Lyons Town (2,033) |
| Mountain Meadows (274) | Nederland Town (1,445) | Niwot (4,006) |
| Paragon Estates (928) | Pine Brook Hill (983) | St. Ann Highlands (288) |
| Seven Hills (121) | Sugarloaf (261) | Sunshine (230) |
| Superior Town (12,483) | Tall Timber (208) | Valmont (59) |
| Ward Town (150) |
Boulder County Zip Codes
| 80020 (46,871) | 80025 (253) | 80026 (26,378) |
| 80027 (31,034) | 80301 (22,555) | 80302 (26,941) |
| 80303 (22,361) | 80304 (25,623) | 80305 (16,874) |
| 80310 (6,578) | 80403 (18,211) | 80422 (4,326) |
| 80455 (497) | 80466 (3,338) | 80471 (23) |
| 80481 (572) | 80501 (39,521) | 80503 (31,064) |
| 80504 (46,876) | 80510 (420) | 80516 (20,254) |
| 80540 (4,461) | 80544 (111) |