| | Guttenberg, NJ | Monmouth Beach, NJ | United States |
| Population | 11,833 | 3,197 | 329,725,481 |
| Female Population | 52.0% | 51.6% | 50.5% |
| Male Population | 48.0% | 48.4% | 49.5% |
| Median Age | 38.4 | 56.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 11,205 | 3,277 | 309,327,143 |
| Population - 2000 | 10,807 | 3,595 | 285,036,114 |
| Population - 1990 | 8,268 | 3,303 | 251,960,433 |
| Pop. 2000 to Now | 1.9% | -9.3% | 15.6% |
| Pop. 1990 to Now | 33.2% | -1.2% | 30.8% |
| space4 | | | |
| Population Density | 61,310.9 | 3,068.1 | 93.4 |
| Land Area | 0.2 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 1.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Guttenberg, NJ | Monmouth Beach, NJ | United States |
| Age 0 to 4 | 5.5% | 3.3% | 5.9% |
| Age 5 to 9 | 5.3% | 3.6% | 6.1% |
| Age 10 to 14 | 4.8% | 4.6% | 6.6% |
| Age 15 to 17 | 2.9% | 1.4% | 3.9% |
| Age 18 to 20 | 3.1% | 4.3% | 4.0% |
| Age 21 to 24 | 5.2% | 3.9% | 5.2% |
| Age 25 to 34 | 15.5% | 6.8% | 13.8% |
| Age 35 to 44 | 18.0% | 4.3% | 12.9% |
| Age 45 to 54 | 12.5% | 14.7% | 12.6% |
| Age 55 to 59 | 7.3% | 10.5% | 6.7% |
| Age 60 to 64 | 6.6% | 11.6% | 6.3% |
| Age 65 to 74 | 8.8% | 20.2% | 9.6% |
| Age 75 to 84 | 3.6% | 8.6% | 4.5% |
| Age 85 and over | 0.8% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Guttenberg, NJ | Monmouth Beach, NJ | United States |
| White | 24.2% | 91.0% | 59.4% |
| Black | 2.4% | 0.9% | 12.2% |
| Asian | 7.5% | 0.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.3% | 0.4% |
| Two or More Races | 1.4% | 1.0% | 3.2% |
| Hispanic | 64.3% | 6.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Guttenberg, NJ | Monmouth Beach, NJ | United States |
| Married Population | 44.6% | 62.6% | 49.8% |
| Currently Married | 40.6% | 61.6% | 48.0% |
| Married but Separated | 4.0% | 1.0% | 1.8% |
| Single Population | 55.4% | 37.4% | 50.2% |
| Never Married | 40.3% | 22.5% | 33.8% |
| Divorced | 9.8% | 11.5% | 10.8% |
| Widowed | 5.3% | 3.4% | 5.6% |
| space5 | | | |
| Household Size | 2.35 | 2.16 | 2.60 |
| Households | 5,033 | 1,479 | 124,010,992 |
| Family Households | 3,073 | 933 | 80,755,759 |
| Married couple, w/children | 26.5% | 20.6% | 30.5% |
| Married couple, no children | 32.0% | 70.1% | 42.9% |
| Non Family Households | 1,960 | 546 | 43,255,233 |
| Single householder, w/children | 21.0% | 2.3% | 15.8% |
| Single householder, no children | 20.6% | 7.1% | 10.8% |