| Total | Unincorporated | Berthoud | Estes Park | Fort Collins | Loveland | Timnath | Wellington | |
|---|---|---|---|---|---|---|---|---|
| 1970 | 89,900 | 26,413 | 1,446 | 1,616 | 43,337 | 16,220 | 177 | 691 |
| 1980 | 149,184 | 47,384 | 2,362 | 2,703 | 65,092 | 30,244 | 185 | 1,215 |
| 1990 | 186,136 | 53,557 | 2,990 | 3,191 | 87,511 | 37,357 | 190 | 1,340 |
| 1995 | 216,289 | 62,373 | 3,637 | 3,962 | 101,447 | 43,048 | 219 | 1,526 |
| 2000 | 251,494 | 68,819 | 4,839 | 5,413 | 118,652 | 50,608 | 223 | 2,672 |
| 2005 | 280,817 | 70,405 | 5,070 | 5,916 | 132,171 | 60,682 | 226 | 4,434 |
| 2010 | 299,284 | 71,164 | 5,225 | 6,555 | 140,087 | 66,132 | 608 | 5,634 |
| Average Number of Persons Per Family | 3.09 |
| Average Number of Persons Per Household | 2.54 |
| Total Number of Households | 70,472 |
| Married Coupled Households | 58.1% |
| With Children Under 18 | 28.6% |
| Without Children Under 18 | 29.4% |
| Single Person Households | 22.9% |
| Male | 9.7% |
| Female | 13.2% |
| Households 65 or Older | 16.0% |