| | East Peoria, IL | Muskogee, OK | United States |
| Population | 22,707 | 37,214 | 329,725,481 |
| Female Population | 49.2% | 51.2% | 50.5% |
| Male Population | 50.8% | 48.8% | 49.5% |
| Median Age | 41.9 | 35.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 23,468 | 39,241 | 309,327,143 |
| Population - 2000 | 22,638 | 38,310 | 285,036,114 |
| Population - 1990 | 21,378 | 37,708 | 251,960,433 |
| Pop. 2000 to Now | -1.3% | -3.9% | 15.6% |
| Pop. 1990 to Now | 4.5% | -2.3% | 30.8% |
| space4 | | | |
| Population Density | 1,125.9 | 862.2 | 93.4 |
| Land Area | 20.2 | 43.2 | 3,531,905.4 |
| Water Area | 1.8 | 1.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | East Peoria, IL | Muskogee, OK | United States |
| Age 0 to 4 | 5.9% | 7.3% | 5.9% |
| Age 5 to 9 | 6.1% | 7.1% | 6.1% |
| Age 10 to 14 | 5.3% | 7.8% | 6.6% |
| Age 15 to 17 | 2.8% | 4.4% | 3.9% |
| Age 18 to 20 | 3.6% | 4.3% | 4.0% |
| Age 21 to 24 | 5.2% | 5.6% | 5.2% |
| Age 25 to 34 | 11.8% | 13.2% | 13.8% |
| Age 35 to 44 | 13.1% | 11.7% | 12.9% |
| Age 45 to 54 | 13.3% | 11.4% | 12.6% |
| Age 55 to 59 | 6.2% | 6.0% | 6.7% |
| Age 60 to 64 | 7.1% | 6.4% | 6.3% |
| Age 65 to 74 | 12.0% | 8.6% | 9.6% |
| Age 75 to 84 | 5.8% | 4.5% | 4.5% |
| Age 85 and over | 1.7% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | East Peoria, IL | Muskogee, OK | United States |
| White | 92.2% | 49.4% | 59.4% |
| Black | 1.6% | 15.0% | 12.2% |
| Asian | 2.4% | 0.9% | 5.6% |
| Native American | 0.0% | 15.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.2% | 0.4% |
| Two or More Races | 1.5% | 11.2% | 3.2% |
| Hispanic | 2.2% | 8.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | East Peoria, IL | Muskogee, OK | United States |
| Married Population | 56.9% | 44.2% | 49.8% |
| Currently Married | 55.8% | 41.2% | 48.0% |
| Married but Separated | 1.1% | 3.0% | 1.8% |
| Single Population | 43.1% | 55.8% | 50.2% |
| Never Married | 26.3% | 32.8% | 33.8% |
| Divorced | 10.8% | 15.0% | 10.8% |
| Widowed | 6.0% | 8.1% | 5.6% |
| space5 | | | |
| Household Size | 2.31 | 2.49 | 2.60 |
| Households | 9,658 | 14,418 | 124,010,992 |
| Family Households | 5,975 | 9,015 | 80,755,759 |
| Married couple, w/children | 30.5% | 25.8% | 30.5% |
| Married couple, no children | 54.6% | 36.5% | 42.9% |
| Non Family Households | 3,683 | 5,403 | 43,255,233 |
| Single householder, w/children | 10.5% | 27.7% | 15.8% |
| Single householder, no children | 4.4% | 10.0% | 10.8% |