| | Palmyra, MO | Council Bluffs, IA | United States |
| Population | 3,620 | 62,617 | 329,725,481 |
| Female Population | 48.3% | 51.1% | 50.5% |
| Male Population | 51.7% | 48.9% | 49.5% |
| Median Age | 36.1 | 38.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,617 | 62,358 | 309,327,143 |
| Population - 2000 | 3,467 | 58,268 | 285,036,114 |
| Population - 1990 | 3,371 | 54,315 | 251,960,433 |
| Pop. 2000 to Now | 3.2% | 6.8% | 15.6% |
| Pop. 1990 to Now | 6.1% | 14.6% | 30.8% |
| space4 | | | |
| Population Density | 1,238.9 | 1,460.8 | 93.4 |
| Land Area | 2.9 | 42.9 | 3,531,905.4 |
| Water Area | 0.0 | 2.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Palmyra, MO | Council Bluffs, IA | United States |
| Age 0 to 4 | 8.1% | 6.4% | 5.9% |
| Age 5 to 9 | 7.2% | 5.7% | 6.1% |
| Age 10 to 14 | 7.0% | 6.3% | 6.6% |
| Age 15 to 17 | 4.1% | 4.1% | 3.9% |
| Age 18 to 20 | 2.5% | 4.8% | 4.0% |
| Age 21 to 24 | 4.0% | 5.0% | 5.2% |
| Age 25 to 34 | 14.8% | 13.0% | 13.8% |
| Age 35 to 44 | 16.8% | 12.6% | 12.9% |
| Age 45 to 54 | 9.1% | 12.0% | 12.6% |
| Age 55 to 59 | 5.2% | 6.4% | 6.7% |
| Age 60 to 64 | 3.5% | 6.9% | 6.3% |
| Age 65 to 74 | 9.9% | 9.9% | 9.6% |
| Age 75 to 84 | 5.9% | 4.6% | 4.5% |
| Age 85 and over | 1.9% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Palmyra, MO | Council Bluffs, IA | United States |
| White | 88.0% | 83.7% | 59.4% |
| Black | 3.9% | 1.9% | 12.2% |
| Asian | 1.1% | 0.9% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 6.3% | 2.7% | 3.2% |
| Hispanic | 0.8% | 10.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Palmyra, MO | Council Bluffs, IA | United States |
| Married Population | 45.5% | 43.9% | 49.8% |
| Currently Married | 44.9% | 42.5% | 48.0% |
| Married but Separated | 0.6% | 1.4% | 1.8% |
| Single Population | 54.5% | 56.1% | 50.2% |
| Never Married | 28.3% | 34.4% | 33.8% |
| Divorced | 18.4% | 15.1% | 10.8% |
| Widowed | 7.8% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.40 | 2.60 |
| Households | 1,509 | 25,282 | 124,010,992 |
| Family Households | 934 | 14,894 | 80,755,759 |
| Married couple, w/children | 27.3% | 24.1% | 30.5% |
| Married couple, no children | 37.4% | 43.9% | 42.9% |
| Non Family Households | 575 | 10,388 | 43,255,233 |
| Single householder, w/children | 29.8% | 21.4% | 15.8% |
| Single householder, no children | 5.6% | 10.6% | 10.8% |