| | Readington, NJ | Pleasant Grove, UT | United States |
| Population | 16,104 | 37,228 | 329,725,481 |
| Female Population | 50.4% | 47.6% | 50.5% |
| Male Population | 49.6% | 52.4% | 49.5% |
| Median Age | 50.5 | 28.3 | 38.4 |
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| Population - 2010 | 16,110 | 33,732 | 309,327,143 |
| Population - 2000 | 15,803 | 23,468 | 285,036,114 |
| Population - 1990 | 13,400 | 13,476 | 251,960,433 |
| Pop. 2000 to Now | 0.4% | 63.0% | 15.6% |
| Pop. 1990 to Now | 18.4% | 183.8% | 30.8% |
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| Population Density | 337.4 | 4,081.1 | 93.4 |
| Land Area | 47.7 | 9.1 | 3,531,905.4 |
| Water Area | 0.3 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Readington, NJ | Pleasant Grove, UT | United States |
| Age 0 to 4 | 4.5% | 8.3% | 5.9% |
| Age 5 to 9 | 5.0% | 8.9% | 6.1% |
| Age 10 to 14 | 5.6% | 8.8% | 6.6% |
| Age 15 to 17 | 4.4% | 5.1% | 3.9% |
| Age 18 to 20 | 3.0% | 6.5% | 4.0% |
| Age 21 to 24 | 3.9% | 6.3% | 5.2% |
| Age 25 to 34 | 6.2% | 14.7% | 13.8% |
| Age 35 to 44 | 10.6% | 11.9% | 12.9% |
| Age 45 to 54 | 16.6% | 10.8% | 12.6% |
| Age 55 to 59 | 8.1% | 4.3% | 6.7% |
| Age 60 to 64 | 7.8% | 4.1% | 6.3% |
| Age 65 to 74 | 13.8% | 6.2% | 9.6% |
| Age 75 to 84 | 5.8% | 2.8% | 4.5% |
| Age 85 and over | 4.8% | 1.1% | 1.9% |
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| Race | | | |
| | Readington, NJ | Pleasant Grove, UT | United States |
| White | 83.2% | 82.9% | 59.4% |
| Black | 0.7% | 0.4% | 12.2% |
| Asian | 4.8% | 1.4% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 1.3% | 0.2% |
| Other | 0.2% | 0.2% | 0.4% |
| Two or More Races | 2.8% | 3.4% | 3.2% |
| Hispanic | 8.3% | 10.3% | 18.4% |
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| Marriage & Family | | | |
| | Readington, NJ | Pleasant Grove, UT | United States |
| Married Population | 63.7% | 61.0% | 49.8% |
| Currently Married | 62.6% | 60.2% | 48.0% |
| Married but Separated | 1.1% | 0.9% | 1.8% |
| Single Population | 36.3% | 39.0% | 50.2% |
| Never Married | 22.2% | 28.5% | 33.8% |
| Divorced | 8.3% | 6.9% | 10.8% |
| Widowed | 5.8% | 3.6% | 5.6% |
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| Household Size | 2.52 | 3.27 | 2.60 |
| Households | 6,386 | 11,359 | 124,010,992 |
| Family Households | 4,658 | 8,868 | 80,755,759 |
| Married couple, w/children | 35.1% | 44.7% | 30.5% |
| Married couple, no children | 53.8% | 40.7% | 42.9% |
| Non Family Households | 1,728 | 2,491 | 43,255,233 |
| Single householder, w/children | 3.8% | 7.5% | 15.8% |
| Single householder, no children | 7.2% | 7.0% | 10.8% |