| | Irwindale, CA | Commerce, CA | United States |
| Population | 1,359 | 12,459 | 329,725,481 |
| Female Population | 51.1% | 51.2% | 50.5% |
| Male Population | 48.9% | 48.8% | 49.5% |
| Median Age | 34.8 | 37.6 | 38.4 |
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| Population - 2010 | 1,418 | 12,833 | 309,327,143 |
| Population - 2000 | 1,446 | 12,568 | 285,036,114 |
| Population - 1990 | 1,050 | 12,135 | 251,960,433 |
| Pop. 2000 to Now | 1.9% | -0.9% | 15.6% |
| Pop. 1990 to Now | 40.3% | 2.6% | 30.8% |
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| Population Density | 154.1 | 1,905.6 | 93.4 |
| Land Area | 8.8 | 6.5 | 3,531,905.4 |
| Water Area | 0.8 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Irwindale, CA | Commerce, CA | United States |
| Age 0 to 4 | 6.5% | 4.1% | 5.9% |
| Age 5 to 9 | 4.6% | 6.2% | 6.1% |
| Age 10 to 14 | 5.0% | 6.8% | 6.6% |
| Age 15 to 17 | 3.8% | 4.3% | 3.9% |
| Age 18 to 20 | 3.0% | 3.2% | 4.0% |
| Age 21 to 24 | 7.7% | 4.6% | 5.2% |
| Age 25 to 34 | 20.0% | 16.0% | 13.8% |
| Age 35 to 44 | 7.8% | 12.4% | 12.9% |
| Age 45 to 54 | 16.7% | 12.0% | 12.6% |
| Age 55 to 59 | 4.8% | 6.0% | 6.7% |
| Age 60 to 64 | 4.2% | 5.3% | 6.3% |
| Age 65 to 74 | 5.9% | 10.8% | 9.6% |
| Age 75 to 84 | 6.6% | 6.1% | 4.5% |
| Age 85 and over | 3.5% | 2.2% | 1.9% |
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| Race | | | |
| | Irwindale, CA | Commerce, CA | United States |
| White | 6.5% | 2.6% | 59.4% |
| Black | 0.0% | 0.7% | 12.2% |
| Asian | 0.6% | 1.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.4% | 0.0% | 0.2% |
| Other | 0.6% | 0.1% | 0.4% |
| Two or More Races | 0.6% | 0.5% | 3.2% |
| Hispanic | 91.4% | 94.8% | 18.4% |
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| Marriage & Family | | | |
| | Irwindale, CA | Commerce, CA | United States |
| Married Population | 38.0% | 48.5% | 49.8% |
| Currently Married | 36.3% | 45.1% | 48.0% |
| Married but Separated | 1.8% | 3.4% | 1.8% |
| Single Population | 62.0% | 51.5% | 50.2% |
| Never Married | 47.5% | 41.1% | 33.8% |
| Divorced | 5.4% | 4.5% | 10.8% |
| Widowed | 9.0% | 5.9% | 5.6% |
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| Household Size | 3.27 | 3.57 | 2.60 |
| Households | 416 | 3,466 | 124,010,992 |
| Family Households | 282 | 2,673 | 80,755,759 |
| Married couple, w/children | 26.2% | 34.7% | 30.5% |
| Married couple, no children | 25.9% | 31.4% | 42.9% |
| Non Family Households | 134 | 793 | 43,255,233 |
| Single householder, w/children | 22.7% | 14.0% | 15.8% |
| Single householder, no children | 25.2% | 19.9% | 10.8% |