| PEOPLE | Irwin | Hermosa Beach | United States |
| Population | 3,973 | 19,506 | 308,035,306 |
| Pop. Density | 4,746 | 13,674 | 87 |
| Pop. Change | -6.56% | 5.16% | 8.07% |
| Median Age | 40.2 | 36.9 | 37.3 |
| Households | 2,024 | 9,550 | 116,716,292 |
| Household Size | 2 | 2.04 | 2.58 |
| Male Population | 46.51% | 52.67% | 49.27% |
| Female Population | 53.49% | 47.33% | 50.96% |
| Married Population | 43.35% | 31.00% | 47.02% |
| Single Population | 56.65% | 69.00% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.84% | 5.09% | 6.56% |
| Age 5 to 9 | 4.25% | 4.96% | 6.61% |
| Age 10 to 14 | 4.71% | 3.61% | 6.71% |
| Age 15 to 17 | 2.69% | 2.20% | 4.21% |
| Age 18 to 20 | 2.54% | 0.92% | 2.95% |
| Age 21 to 24 | 7.65% | 5.45% | 7.01% |
| Age 25 to 34 | 16.36% | 24.08% | 13.33% |
| Age 35 to 44 | 11.50% | 19.58% | 13.33% |
| Age 45 to 49 | 15.20% | 14.60% | 14.61% |
| Age 50 to 54 | 15.20% | 14.60% | 14.61% |
| Age 55 to 59 | 12.96% | 10.51% | 11.84% |
| Age 60 to 64 | 12.96% | 10.51% | 11.84% |
| Age 65 to 74 | 7.15% | 5.48% | 7.05% |
| Age 75 to 84 | 6.39% | 2.44% | 4.24% |
| Age 85 and over | 2.74% | 1.10% | 1.78% |
| RACE | | | |
| White | 96.48% | 86.78% | 72.41% |
| Black | 1.18% | 1.17% | 12.61% |
| Asian | 0.88% | 5.70% | 4.75% |
| American Indian | 0.03% | 0.25% | 0.95% |
| Other | 1.43% | 6.10% | 9.28% |
| Hispanic | 44.42% | 19.43% | 16.35% |
| Non-Hispanic | 55.58% | 80.57% | 83.65% |
| FAMILY | | | |
| Married, w/children | 22.30% | 34.17% | 30.42% |
| Married, no children | 45.21% | 46.40% | 42.46% |
| Single, w/children | 18.57% | 10.30% | 14.39% |
| Single, no children | 13.93% | 9.14% | 12.73% |
| Divorced | 12.15% | 10.28% | 10.62% |
| Separated | 3.09% | 2.76% | 4.97% |
| Widowed | 10.22% | 3.34% | 6.14% |
| Now Married | 43.07% | 31.09% | 46.32% |
| Never Married | 31.48% | 52.53% | 31.95% |
