| PEOPLE | Lake Oswego | Forest Grove | United States |
| Population | 36,619 | 21,083 | 308,035,306 |
| Pop. Density | 3,429 | 3,675 | 87 |
| Pop. Change | 2.25% | 15.27% | 8.07% |
| Median Age | 45.8 | 32.8 | 37.3 |
| Households | 15,893 | 7,385 | 116,716,292 |
| Household Size | 2.29 | 2.75 | 2.58 |
| Male Population | 47.30% | 47.97% | 49.27% |
| Female Population | 52.70% | 52.03% | 50.96% |
| Married Population | 55.11% | 45.73% | 47.02% |
| Single Population | 44.89% | 54.27% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.07% | 7.02% | 6.56% |
| Age 5 to 9 | 5.81% | 7.60% | 6.61% |
| Age 10 to 14 | 7.36% | 7.37% | 6.71% |
| Age 15 to 17 | 4.82% | 4.62% | 4.21% |
| Age 18 to 20 | 1.84% | 4.39% | 2.95% |
| Age 21 to 24 | 3.83% | 8.88% | 7.01% |
| Age 25 to 34 | 8.65% | 12.97% | 13.33% |
| Age 35 to 44 | 12.37% | 12.64% | 13.33% |
| Age 45 to 49 | 17.88% | 12.56% | 14.61% |
| Age 50 to 54 | 17.88% | 12.56% | 14.61% |
| Age 55 to 59 | 17.21% | 9.63% | 11.84% |
| Age 60 to 64 | 17.21% | 9.63% | 11.84% |
| Age 65 to 74 | 8.65% | 5.36% | 7.05% |
| Age 75 to 84 | 4.59% | 3.97% | 4.24% |
| Age 85 and over | 2.92% | 3.01% | 1.78% |
| RACE | | | |
| White | 89.28% | 78.81% | 72.41% |
| Black | 0.72% | 0.78% | 12.61% |
| Asian | 5.61% | 2.64% | 4.75% |
| American Indian | 0.41% | 1.10% | 0.95% |
| Other | 3.98% | 16.68% | 9.28% |
| Hispanic | 54.13% | 69.90% | 16.35% |
| Non-Hispanic | 45.87% | 30.10% | 83.65% |
| FAMILY | | | |
| Married, w/children | 34.94% | 37.12% | 30.42% |
| Married, no children | 48.76% | 38.78% | 42.46% |
| Single, w/children | 9.04% | 14.74% | 14.39% |
| Single, no children | 7.25% | 9.36% | 12.73% |
| Divorced | 12.33% | 12.52% | 10.62% |
| Separated | 2.08% | 6.91% | 4.97% |
| Widowed | 4.75% | 6.34% | 6.14% |
| Now Married | 54.17% | 46.01% | 46.32% |
| Never Married | 26.67% | 28.21% | 31.95% |
