| | Calcium, NY | Fort Irwin, CA | United States |
| Population | 4,092 | 9,100 | 329,725,481 |
| Female Population | 49.4% | 38.5% | 50.5% |
| Male Population | 50.6% | 61.5% | 49.5% |
| Median Age | 26.5 | 22.8 | 38.4 |
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| Population - 2010 | 3,546 | 9,107 | 309,327,143 |
| Population - 2000 | 3,346 | 8,968 | 285,036,114 |
| Population - 1990 | 2,465 | 6,406 | 251,960,433 |
| Pop. 2000 to Now | 14.2% | 4.5% | 15.6% |
| Pop. 1990 to Now | 55.0% | 46.3% | 30.8% |
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| Population Density | 731.5 | 1,306.5 | 93.4 |
| Land Area | 5.6 | 7.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Calcium, NY | Fort Irwin, CA | United States |
| Age 0 to 4 | 11.2% | 12.5% | 5.9% |
| Age 5 to 9 | 4.9% | 9.8% | 6.1% |
| Age 10 to 14 | 2.0% | 6.5% | 6.6% |
| Age 15 to 17 | 1.4% | 1.2% | 3.9% |
| Age 18 to 20 | 6.1% | 10.9% | 4.0% |
| Age 21 to 24 | 20.1% | 18.9% | 5.2% |
| Age 25 to 34 | 31.3% | 26.3% | 13.8% |
| Age 35 to 44 | 13.2% | 10.5% | 12.9% |
| Age 45 to 54 | 2.8% | 2.2% | 12.6% |
| Age 55 to 59 | 1.5% | 0.4% | 6.7% |
| Age 60 to 64 | 0.8% | 0.0% | 6.3% |
| Age 65 to 74 | 2.3% | 0.4% | 9.6% |
| Age 75 to 84 | 0.4% | 0.4% | 4.5% |
| Age 85 and over | 2.0% | 0.0% | 1.9% |
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| Race | | | |
| | Calcium, NY | Fort Irwin, CA | United States |
| White | 48.3% | 48.8% | 59.4% |
| Black | 17.2% | 13.3% | 12.2% |
| Asian | 3.1% | 6.2% | 5.6% |
| Native American | 0.0% | 0.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 7.8% | 8.7% | 3.2% |
| Hispanic | 23.7% | 22.1% | 18.4% |
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| Marriage & Family | | | |
| | Calcium, NY | Fort Irwin, CA | United States |
| Married Population | 60.6% | 57.0% | 49.8% |
| Currently Married | 55.7% | 54.3% | 48.0% |
| Married but Separated | 4.8% | 2.7% | 1.8% |
| Single Population | 39.4% | 43.0% | 50.2% |
| Never Married | 22.9% | 35.7% | 33.8% |
| Divorced | 14.1% | 6.8% | 10.8% |
| Widowed | 2.5% | 0.5% | 5.6% |
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| Household Size | 2.34 | 2.67 | 2.60 |
| Households | 1,750 | 2,790 | 124,010,992 |
| Family Households | 976 | 2,056 | 80,755,759 |
| Married couple, w/children | 29.4% | 43.7% | 30.5% |
| Married couple, no children | 44.5% | 35.4% | 42.9% |
| Non Family Households | 774 | 734 | 43,255,233 |
| Single householder, w/children | 19.6% | 21.0% | 15.8% |
| Single householder, no children | 6.6% | 0.0% | 10.8% |