| | Venice, IL | Jerseyville, IL | United States |
| Population | 1,926 | 7,674 | 329,725,481 |
| Female Population | 56.5% | 56.9% | 50.5% |
| Male Population | 43.5% | 43.1% | 49.5% |
| Median Age | 40.2 | 42.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,893 | 8,463 | 309,327,143 |
| Population - 2000 | 2,528 | 7,984 | 285,036,114 |
| Population - 1990 | 3,571 | 7,382 | 251,960,433 |
| Pop. 2000 to Now | -26.7% | 1.6% | 15.6% |
| Pop. 1990 to Now | -48.1% | 9.9% | 30.8% |
| space4 | | | |
| Population Density | 1,067.0 | 1,483.8 | 93.4 |
| Land Area | 1.8 | 5.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Venice, IL | Jerseyville, IL | United States |
| Age 0 to 4 | 6.2% | 4.3% | 5.9% |
| Age 5 to 9 | 3.9% | 5.0% | 6.1% |
| Age 10 to 14 | 5.6% | 8.2% | 6.6% |
| Age 15 to 17 | 2.2% | 4.5% | 3.9% |
| Age 18 to 20 | 2.4% | 2.7% | 4.0% |
| Age 21 to 24 | 6.3% | 5.3% | 5.2% |
| Age 25 to 34 | 17.4% | 10.3% | 13.8% |
| Age 35 to 44 | 13.4% | 11.8% | 12.9% |
| Age 45 to 54 | 7.9% | 14.0% | 12.6% |
| Age 55 to 59 | 7.7% | 9.6% | 6.7% |
| Age 60 to 64 | 8.7% | 6.3% | 6.3% |
| Age 65 to 74 | 11.3% | 7.4% | 9.6% |
| Age 75 to 84 | 3.0% | 7.4% | 4.5% |
| Age 85 and over | 3.8% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Venice, IL | Jerseyville, IL | United States |
| White | 3.0% | 95.7% | 59.4% |
| Black | 90.8% | 0.2% | 12.2% |
| Asian | 0.0% | 0.8% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.5% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.3% | 2.3% | 3.2% |
| Hispanic | 1.9% | 0.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Venice, IL | Jerseyville, IL | United States |
| Married Population | 27.0% | 43.4% | 49.8% |
| Currently Married | 24.6% | 40.9% | 48.0% |
| Married but Separated | 2.4% | 2.5% | 1.8% |
| Single Population | 73.0% | 56.6% | 50.2% |
| Never Married | 54.2% | 26.8% | 33.8% |
| Divorced | 14.6% | 19.1% | 10.8% |
| Widowed | 4.2% | 10.7% | 5.6% |
| space5 | | | |
| Household Size | 2.50 | 2.49 | 2.60 |
| Households | 770 | 2,958 | 124,010,992 |
| Family Households | 486 | 1,767 | 80,755,759 |
| Married couple, w/children | 10.3% | 31.0% | 30.5% |
| Married couple, no children | 22.6% | 43.3% | 42.9% |
| Non Family Households | 284 | 1,191 | 43,255,233 |
| Single householder, w/children | 29.8% | 15.8% | 15.8% |
| Single householder, no children | 37.2% | 10.0% | 10.8% |