| PEOPLE | Lake Oswego | Cascade Locks | United States |
| Population | 36,619 | 1,144 | 308,035,306 |
| Pop. Density | 3,429 | 549 | 87 |
| Pop. Change | 2.25% | -0.72% | 8.07% |
| Median Age | 45.8 | 40.4 | 37.3 |
| Households | 15,893 | 445 | 116,716,292 |
| Household Size | 2.29 | 2.57 | 2.58 |
| Male Population | 47.30% | 51.49% | 49.27% |
| Female Population | 52.70% | 48.51% | 50.96% |
| Married Population | 55.11% | 55.66% | 47.02% |
| Single Population | 44.89% | 44.34% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.07% | 6.99% | 6.56% |
| Age 5 to 9 | 5.81% | 5.42% | 6.61% |
| Age 10 to 14 | 7.36% | 4.81% | 6.71% |
| Age 15 to 17 | 4.82% | 3.58% | 4.21% |
| Age 18 to 20 | 1.84% | 2.45% | 2.95% |
| Age 21 to 24 | 3.83% | 7.87% | 7.01% |
| Age 25 to 34 | 8.65% | 14.07% | 13.33% |
| Age 35 to 44 | 12.37% | 10.31% | 13.33% |
| Age 45 to 49 | 17.88% | 18.36% | 14.61% |
| Age 50 to 54 | 17.88% | 18.36% | 14.61% |
| Age 55 to 59 | 17.21% | 14.60% | 11.84% |
| Age 60 to 64 | 17.21% | 14.60% | 11.84% |
| Age 65 to 74 | 8.65% | 6.38% | 7.05% |
| Age 75 to 84 | 4.59% | 3.93% | 4.24% |
| Age 85 and over | 2.92% | 1.22% | 1.78% |
| RACE | | | |
| White | 89.28% | 87.67% | 72.41% |
| Black | 0.72% | 0.52% | 12.61% |
| Asian | 5.61% | 0.87% | 4.75% |
| American Indian | 0.41% | 1.84% | 0.95% |
| Other | 3.98% | 9.09% | 9.28% |
| Hispanic | 54.13% | 89.62% | 16.35% |
| Non-Hispanic | 45.87% | 10.38% | 83.65% |
| FAMILY | | | |
| Married, w/children | 34.94% | 21.97% | 30.42% |
| Married, no children | 48.76% | 46.89% | 42.46% |
| Single, w/children | 9.04% | 15.41% | 14.39% |
| Single, no children | 7.25% | 15.74% | 12.73% |
| Divorced | 12.33% | 9.20% | 10.62% |
| Separated | 2.08% | 2.88% | 4.97% |
| Widowed | 4.75% | 4.66% | 6.14% |
| Now Married | 54.17% | 56.21% | 46.32% |
| Never Married | 26.67% | 27.05% | 31.95% |
