| | Greenwood, NE | Fremont, NE | United States |
| Population | 548 | 27,245 | 329,725,481 |
| Female Population | 45.6% | 50.8% | 50.5% |
| Male Population | 54.4% | 49.2% | 49.5% |
| Median Age | 37.7 | 37.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 567 | 26,403 | 309,327,143 |
| Population - 2000 | 544 | 25,174 | 285,036,114 |
| Population - 1990 | 531 | 23,680 | 251,960,433 |
| Pop. 2000 to Now | 9.4% | 4.2% | 15.6% |
| Pop. 1990 to Now | 12.1% | 10.8% | 30.8% |
| space4 | | | |
| Population Density | 1,333.3 | 2,615.7 | 93.4 |
| Land Area | 0.4 | 10.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Greenwood, NE | Fremont, NE | United States |
| Age 0 to 4 | 4.0% | 7.0% | 5.9% |
| Age 5 to 9 | 5.8% | 6.4% | 6.1% |
| Age 10 to 14 | 8.6% | 7.5% | 6.6% |
| Age 15 to 17 | 5.3% | 3.9% | 3.9% |
| Age 18 to 20 | 2.7% | 4.8% | 4.0% |
| Age 21 to 24 | 4.7% | 4.9% | 5.2% |
| Age 25 to 34 | 15.0% | 12.0% | 13.8% |
| Age 35 to 44 | 13.3% | 12.3% | 12.9% |
| Age 45 to 54 | 5.8% | 11.1% | 12.6% |
| Age 55 to 59 | 8.8% | 6.6% | 6.7% |
| Age 60 to 64 | 5.5% | 6.0% | 6.3% |
| Age 65 to 74 | 13.9% | 9.2% | 9.6% |
| Age 75 to 84 | 6.6% | 5.5% | 4.5% |
| Age 85 and over | 0.0% | 2.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Greenwood, NE | Fremont, NE | United States |
| White | 96.7% | 80.4% | 59.4% |
| Black | 0.0% | 0.9% | 12.2% |
| Asian | 0.4% | 0.5% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 0.0% | 2.3% | 3.2% |
| Hispanic | 2.9% | 15.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Greenwood, NE | Fremont, NE | United States |
| Married Population | 52.6% | 50.8% | 49.8% |
| Currently Married | 50.6% | 49.6% | 48.0% |
| Married but Separated | 2.0% | 1.2% | 1.8% |
| Single Population | 47.4% | 49.2% | 50.2% |
| Never Married | 32.9% | 29.1% | 33.8% |
| Divorced | 10.5% | 13.1% | 10.8% |
| Widowed | 4.0% | 7.0% | 5.6% |
| space5 | | | |
| Household Size | 2.81 | 2.49 | 2.60 |
| Households | 195 | 10,621 | 124,010,992 |
| Family Households | 138 | 6,630 | 80,755,759 |
| Married couple, w/children | 26.1% | 31.9% | 30.5% |
| Married couple, no children | 54.3% | 45.7% | 42.9% |
| Non Family Households | 57 | 3,991 | 43,255,233 |
| Single householder, w/children | 8.0% | 17.2% | 15.8% |
| Single householder, no children | 11.6% | 5.2% | 10.8% |