| | Steuben, ME | New Portland, ME | United States |
| Population | 1,297 | 625 | 329,725,481 |
| Female Population | 46.7% | 54.4% | 50.5% |
| Male Population | 53.4% | 45.6% | 49.5% |
| Median Age | 46.1 | 45.2 | 38.4 |
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| Population - 2010 | 1,131 | 721 | 309,327,143 |
| Population - 2000 | 1,126 | 785 | 285,036,114 |
| Population - 1990 | 1,084 | 789 | 251,960,433 |
| Pop. 2000 to Now | 2.0% | -12.4% | 15.6% |
| Pop. 1990 to Now | 5.9% | -12.8% | 30.8% |
| space4 | | | |
| Population Density | 30.2 | 14.2 | 93.4 |
| Land Area | 43.0 | 43.9 | 3,531,905.4 |
| Water Area | 19.3 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Steuben, ME | New Portland, ME | United States |
| Age 0 to 4 | 10.2% | 6.7% | 5.9% |
| Age 5 to 9 | 5.2% | 6.6% | 6.1% |
| Age 10 to 14 | 4.5% | 4.5% | 6.6% |
| Age 15 to 17 | 3.3% | 4.0% | 3.9% |
| Age 18 to 20 | 4.1% | 0.6% | 4.0% |
| Age 21 to 24 | 2.9% | 4.0% | 5.2% |
| Age 25 to 34 | 9.2% | 11.0% | 13.8% |
| Age 35 to 44 | 8.3% | 12.3% | 12.9% |
| Age 45 to 54 | 15.3% | 9.1% | 12.6% |
| Age 55 to 59 | 12.9% | 10.9% | 6.7% |
| Age 60 to 64 | 7.6% | 8.5% | 6.3% |
| Age 65 to 74 | 10.0% | 15.2% | 9.6% |
| Age 75 to 84 | 5.3% | 5.0% | 4.5% |
| Age 85 and over | 1.2% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Steuben, ME | New Portland, ME | United States |
| White | 90.3% | 83.5% | 59.4% |
| Black | 0.4% | 0.0% | 12.2% |
| Asian | 0.8% | 7.2% | 5.6% |
| Native American | 0.0% | 4.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.8% | 0.6% | 0.4% |
| Two or More Races | 6.3% | 4.2% | 3.2% |
| Hispanic | 1.4% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Steuben, ME | New Portland, ME | United States |
| Married Population | 52.4% | 53.7% | 49.8% |
| Currently Married | 52.1% | 53.7% | 48.0% |
| Married but Separated | 0.3% | 0.0% | 1.8% |
| Single Population | 47.6% | 46.3% | 50.2% |
| Never Married | 21.5% | 25.5% | 33.8% |
| Divorced | 20.6% | 11.5% | 10.8% |
| Widowed | 5.6% | 9.3% | 5.6% |
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| Household Size | 2.52 | 2.09 | 2.60 |
| Households | 514 | 299 | 124,010,992 |
| Family Households | 339 | 216 | 80,755,759 |
| Married couple, w/children | 31.0% | 18.1% | 30.5% |
| Married couple, no children | 49.3% | 55.1% | 42.9% |
| Non Family Households | 175 | 83 | 43,255,233 |
| Single householder, w/children | 6.2% | 19.9% | 15.8% |
| Single householder, no children | 13.6% | 6.9% | 10.8% |