| | Middlebush, NJ | Long Valley, NJ | United States |
| Population | 2,461 | 2,108 | 329,725,481 |
| Female Population | 52.9% | 48.1% | 50.5% |
| Male Population | 47.1% | 51.9% | 49.5% |
| Median Age | 44.4 | 44.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,014 | 1,885 | 309,327,143 |
| Population - 2000 | 1,806 | 1,818 | 285,036,114 |
| Population - 1990 | 1,595 | 1,744 | 251,960,433 |
| Pop. 2000 to Now | 53.5% | 10.6% | 15.6% |
| Pop. 1990 to Now | 73.9% | 15.3% | 30.8% |
| space4 | | | |
| Population Density | 1,236.7 | 461.7 | 93.4 |
| Land Area | 2.0 | 4.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Middlebush, NJ | Long Valley, NJ | United States |
| Age 0 to 4 | 7.7% | 7.6% | 5.9% |
| Age 5 to 9 | 8.1% | 3.2% | 6.1% |
| Age 10 to 14 | 11.8% | 3.7% | 6.6% |
| Age 15 to 17 | 3.7% | 14.4% | 3.9% |
| Age 18 to 20 | 1.5% | 1.9% | 4.0% |
| Age 21 to 24 | 1.5% | 6.9% | 5.2% |
| Age 25 to 34 | 4.5% | 7.4% | 13.8% |
| Age 35 to 44 | 14.5% | 5.0% | 12.9% |
| Age 45 to 54 | 9.8% | 13.6% | 12.6% |
| Age 55 to 59 | 10.5% | 9.3% | 6.7% |
| Age 60 to 64 | 7.2% | 5.0% | 6.3% |
| Age 65 to 74 | 6.0% | 15.9% | 9.6% |
| Age 75 to 84 | 9.1% | 6.1% | 4.5% |
| Age 85 and over | 4.1% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Middlebush, NJ | Long Valley, NJ | United States |
| White | 40.0% | 70.5% | 59.4% |
| Black | 21.8% | 0.0% | 12.2% |
| Asian | 23.1% | 3.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 6.2% | 4.6% | 3.2% |
| Hispanic | 8.9% | 21.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Middlebush, NJ | Long Valley, NJ | United States |
| Married Population | 72.7% | 55.5% | 49.8% |
| Currently Married | 69.0% | 55.5% | 48.0% |
| Married but Separated | 3.7% | 0.0% | 1.8% |
| Single Population | 27.3% | 44.5% | 50.2% |
| Never Married | 18.2% | 31.0% | 33.8% |
| Divorced | 4.8% | 9.6% | 10.8% |
| Widowed | 4.3% | 3.9% | 5.6% |
| space5 | | | |
| Household Size | 3.51 | 2.80 | 2.60 |
| Households | 666 | 748 | 124,010,992 |
| Family Households | 600 | 628 | 80,755,759 |
| Married couple, w/children | 41.0% | 31.1% | 30.5% |
| Married couple, no children | 49.5% | 48.4% | 42.9% |
| Non Family Households | 66 | 120 | 43,255,233 |
| Single householder, w/children | 3.2% | 14.3% | 15.8% |
| Single householder, no children | 6.3% | 6.2% | 10.8% |