| | Athena, OR | Milton-Freewater, OR | United States |
| Population | 1,307 | 7,143 | 329,725,481 |
| Female Population | 43.1% | 48.0% | 50.5% |
| Male Population | 56.9% | 52.0% | 49.5% |
| Median Age | 41.7 | 33.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,137 | 7,070 | 309,327,143 |
| Population - 2000 | 1,221 | 6,470 | 285,036,114 |
| Population - 1990 | 997 | 5,533 | 251,960,433 |
| Pop. 2000 to Now | -6.6% | 9.0% | 15.6% |
| Pop. 1990 to Now | 14.3% | 27.5% | 30.8% |
| space4 | | | |
| Population Density | 2,297.0 | 3,587.6 | 93.4 |
| Land Area | 0.6 | 2.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Athena, OR | Milton-Freewater, OR | United States |
| Age 0 to 4 | 1.4% | 7.3% | 5.9% |
| Age 5 to 9 | 4.3% | 5.9% | 6.1% |
| Age 10 to 14 | 7.9% | 9.2% | 6.6% |
| Age 15 to 17 | 5.7% | 6.7% | 3.9% |
| Age 18 to 20 | 2.3% | 4.1% | 4.0% |
| Age 21 to 24 | 5.9% | 3.3% | 5.2% |
| Age 25 to 34 | 14.7% | 15.0% | 13.8% |
| Age 35 to 44 | 11.3% | 14.6% | 12.9% |
| Age 45 to 54 | 9.9% | 10.1% | 12.6% |
| Age 55 to 59 | 5.7% | 4.9% | 6.7% |
| Age 60 to 64 | 8.7% | 6.0% | 6.3% |
| Age 65 to 74 | 19.3% | 5.4% | 9.6% |
| Age 75 to 84 | 2.0% | 6.2% | 4.5% |
| Age 85 and over | 1.0% | 1.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Athena, OR | Milton-Freewater, OR | United States |
| White | 93.0% | 54.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.5% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.6% | 2.1% | 3.2% |
| Hispanic | 4.9% | 43.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Athena, OR | Milton-Freewater, OR | United States |
| Married Population | 54.3% | 45.1% | 49.8% |
| Currently Married | 53.3% | 41.4% | 48.0% |
| Married but Separated | 1.1% | 3.7% | 1.8% |
| Single Population | 45.7% | 54.9% | 50.2% |
| Never Married | 30.3% | 36.9% | 33.8% |
| Divorced | 10.9% | 14.8% | 10.8% |
| Widowed | 4.5% | 3.3% | 5.6% |
| space5 | | | |
| Household Size | 2.43 | 3.16 | 2.60 |
| Households | 535 | 2,237 | 124,010,992 |
| Family Households | 339 | 1,583 | 80,755,759 |
| Married couple, w/children | 17.7% | 36.8% | 30.5% |
| Married couple, no children | 67.3% | 25.1% | 42.9% |
| Non Family Households | 196 | 654 | 43,255,233 |
| Single householder, w/children | 6.2% | 28.7% | 15.8% |
| Single householder, no children | 8.9% | 9.4% | 10.8% |