| | Crete, NE | Plymouth, IN | United States |
| Population | 7,224 | 10,209 | 329,725,481 |
| Female Population | 46.9% | 49.0% | 50.5% |
| Male Population | 53.1% | 51.0% | 49.5% |
| Median Age | 31.5 | 35.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,989 | 10,131 | 309,327,143 |
| Population - 2000 | 6,028 | 9,840 | 285,036,114 |
| Population - 1990 | 4,841 | 8,303 | 251,960,433 |
| Pop. 2000 to Now | 14.1% | 1.2% | 15.6% |
| Pop. 1990 to Now | 42.0% | 19.9% | 30.8% |
| space4 | | | |
| Population Density | 2,187.1 | 1,356.9 | 93.4 |
| Land Area | 3.3 | 7.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Crete, NE | Plymouth, IN | United States |
| Age 0 to 4 | 7.7% | 7.4% | 5.9% |
| Age 5 to 9 | 5.5% | 7.2% | 6.1% |
| Age 10 to 14 | 8.3% | 6.2% | 6.6% |
| Age 15 to 17 | 3.7% | 6.2% | 3.9% |
| Age 18 to 20 | 9.8% | 5.3% | 4.0% |
| Age 21 to 24 | 7.2% | 5.1% | 5.2% |
| Age 25 to 34 | 10.9% | 11.8% | 13.8% |
| Age 35 to 44 | 11.8% | 12.3% | 12.9% |
| Age 45 to 54 | 10.0% | 11.8% | 12.6% |
| Age 55 to 59 | 7.8% | 4.6% | 6.7% |
| Age 60 to 64 | 5.0% | 7.7% | 6.3% |
| Age 65 to 74 | 7.9% | 6.3% | 9.6% |
| Age 75 to 84 | 2.8% | 3.8% | 4.5% |
| Age 85 and over | 1.6% | 4.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Crete, NE | Plymouth, IN | United States |
| White | 49.5% | 66.3% | 59.4% |
| Black | 1.6% | 1.8% | 12.2% |
| Asian | 2.3% | 0.1% | 5.6% |
| Native American | 1.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 1.7% | 2.2% | 3.2% |
| Hispanic | 43.4% | 29.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Crete, NE | Plymouth, IN | United States |
| Married Population | 48.6% | 42.1% | 49.8% |
| Currently Married | 48.6% | 39.8% | 48.0% |
| Married but Separated | 0.0% | 2.3% | 1.8% |
| Single Population | 51.4% | 57.9% | 50.2% |
| Never Married | 39.8% | 35.5% | 33.8% |
| Divorced | 7.8% | 16.0% | 10.8% |
| Widowed | 3.8% | 6.5% | 5.6% |
| space5 | | | |
| Household Size | 2.70 | 2.61 | 2.60 |
| Households | 2,412 | 3,749 | 124,010,992 |
| Family Households | 1,617 | 2,153 | 80,755,759 |
| Married couple, w/children | 42.7% | 38.6% | 30.5% |
| Married couple, no children | 31.2% | 30.3% | 42.9% |
| Non Family Households | 795 | 1,596 | 43,255,233 |
| Single householder, w/children | 19.4% | 25.5% | 15.8% |
| Single householder, no children | 6.7% | 5.6% | 10.8% |