| PEOPLE | Park Ridge | Emerson | United States |
| Population | 8,645 | 7,401 | 308,035,306 |
| Pop. Density | 3,349 | 3,359 | 87 |
| Pop. Change | -0.54% | 4.26% | 8.07% |
| Median Age | 45.2 | 44.2 | 37.3 |
| Households | 3,283 | 2,480 | 116,716,292 |
| Household Size | 2.57 | 2.89 | 2.58 |
| Male Population | 48.27% | 47.94% | 49.27% |
| Female Population | 51.73% | 52.06% | 50.96% |
| Married Population | 62.32% | 61.72% | 47.02% |
| Single Population | 37.68% | 38.28% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.73% | 5.34% | 6.56% |
| Age 5 to 9 | 6.43% | 6.80% | 6.61% |
| Age 10 to 14 | 7.62% | 7.55% | 6.71% |
| Age 15 to 17 | 4.09% | 4.23% | 4.21% |
| Age 18 to 20 | 1.60% | 1.59% | 2.95% |
| Age 21 to 24 | 3.41% | 4.40% | 7.01% |
| Age 25 to 34 | 8.10% | 7.73% | 13.33% |
| Age 35 to 44 | 13.67% | 13.55% | 13.33% |
| Age 45 to 49 | 17.41% | 16.93% | 14.61% |
| Age 50 to 54 | 17.41% | 16.93% | 14.61% |
| Age 55 to 59 | 13.72% | 12.03% | 11.84% |
| Age 60 to 64 | 13.72% | 12.03% | 11.84% |
| Age 65 to 74 | 9.12% | 8.54% | 7.05% |
| Age 75 to 84 | 6.35% | 6.45% | 4.24% |
| Age 85 and over | 3.75% | 4.86% | 1.78% |
| RACE | | | |
| White | 89.14% | 87.31% | 72.41% |
| Black | 1.04% | 1.08% | 12.61% |
| Asian | 6.07% | 8.55% | 4.75% |
| American Indian | 0.22% | 0.04% | 0.95% |
| Other | 3.53% | 3.01% | 9.28% |
| Hispanic | 1.23% | 2.67% | 16.35% |
| Non-Hispanic | 98.77% | 97.33% | 83.65% |
| FAMILY | | | |
| Married, w/children | 37.80% | 40.26% | 30.42% |
| Married, no children | 48.72% | 45.09% | 42.46% |
| Single, w/children | 5.36% | 5.34% | 14.39% |
| Single, no children | 8.12% | 9.30% | 12.73% |
| Divorced | 6.37% | 4.68% | 10.62% |
| Separated | 2.97% | 3.65% | 4.97% |
| Widowed | 6.09% | 8.43% | 6.14% |
| Now Married | 61.34% | 61.04% | 46.32% |
| Never Married | 23.23% | 22.20% | 31.95% |
