| | Anoka, MN | Elk River, MN | United States |
| Population | 17,749 | 25,467 | 329,725,481 |
| Female Population | 52.0% | 50.3% | 50.5% |
| Male Population | 48.0% | 49.7% | 49.5% |
| Median Age | 37.5 | 36 | 38.4 |
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| Population - 2010 | 17,161 | 23,038 | 309,327,143 |
| Population - 2000 | 18,076 | 16,447 | 285,036,114 |
| Population - 1990 | 17,192 | 11,143 | 251,960,433 |
| Pop. 2000 to Now | -3.1% | 55.7% | 15.6% |
| Pop. 1990 to Now | 1.9% | 129.8% | 30.8% |
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| Population Density | 2,664.6 | 601.5 | 93.4 |
| Land Area | 6.7 | 42.3 | 3,531,905.4 |
| Water Area | 0.5 | 1.5 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Anoka, MN | Elk River, MN | United States |
| Age 0 to 4 | 6.0% | 7.5% | 5.9% |
| Age 5 to 9 | 4.5% | 7.8% | 6.1% |
| Age 10 to 14 | 7.4% | 5.8% | 6.6% |
| Age 15 to 17 | 4.0% | 4.4% | 3.9% |
| Age 18 to 20 | 3.0% | 3.0% | 4.0% |
| Age 21 to 24 | 4.8% | 3.3% | 5.2% |
| Age 25 to 34 | 16.7% | 16.4% | 13.8% |
| Age 35 to 44 | 11.6% | 14.1% | 12.9% |
| Age 45 to 54 | 10.7% | 11.3% | 12.6% |
| Age 55 to 59 | 7.3% | 7.1% | 6.7% |
| Age 60 to 64 | 6.8% | 5.2% | 6.3% |
| Age 65 to 74 | 9.3% | 8.4% | 9.6% |
| Age 75 to 84 | 4.9% | 3.7% | 4.5% |
| Age 85 and over | 3.0% | 2.0% | 1.9% |
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| Race | | | |
| | Anoka, MN | Elk River, MN | United States |
| White | 80.1% | 87.4% | 59.4% |
| Black | 8.0% | 3.9% | 12.2% |
| Asian | 2.6% | 1.6% | 5.6% |
| Native American | 0.5% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 1.4% | 0.4% |
| Two or More Races | 2.9% | 2.3% | 3.2% |
| Hispanic | 5.8% | 3.3% | 18.4% |
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| Marriage & Family | | | |
| | Anoka, MN | Elk River, MN | United States |
| Married Population | 49.4% | 50.2% | 49.8% |
| Currently Married | 47.7% | 49.4% | 48.0% |
| Married but Separated | 1.7% | 0.9% | 1.8% |
| Single Population | 50.6% | 49.8% | 50.2% |
| Never Married | 31.8% | 32.9% | 33.8% |
| Divorced | 12.2% | 10.7% | 10.8% |
| Widowed | 6.6% | 6.2% | 5.6% |
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| Household Size | 2.37 | 2.69 | 2.60 |
| Households | 7,126 | 9,192 | 124,010,992 |
| Family Households | 4,327 | 6,117 | 80,755,759 |
| Married couple, w/children | 31.6% | 38.0% | 30.5% |
| Married couple, no children | 41.1% | 38.9% | 42.9% |
| Non Family Households | 2,799 | 3,075 | 43,255,233 |
| Single householder, w/children | 20.0% | 16.7% | 15.8% |
| Single householder, no children | 7.3% | 6.4% | 10.8% |