Shelbyville is a city located in Shelby County, Illinois. Shelbyville has a 2026 population of 4,485. It is also the county seat of Shelby County. Shelbyville is currently declining at a rate of -0.6% annually and its population has decreased by -3.55% since the most recent census, which recorded a population of 4,650 in 2020.
The median household income in Shelbyville is $52,470 with a poverty rate of 13.19%. The median age in Shelbyville is 39.9 years: 39.2 years for males, and 44.5 years for females. For every 100 females there are 73.1 males.
Data after 2023 is projected based on recent change
Overall: 39.9 years
Female: 44.5 years
Male: 39.2 years
There are 3,405 adults, (971 of whom are seniors) in Shelbyville.
Female: 2,514 (57.8%)
Male: 1,837 (42.2%)
The racial composition of Shelbyville includes 97.33% White, and smaller percentages for Two or more races, Black or African American, Native American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 4,235 | 97.33% |
| Two or more races | 76 | 1.75% |
| Black or African American | 36 | 0.83% |
| Native American | 3 | 0.07% |
| Other race | 1 | 0.02% |
Shelbyville 's average per capita income is $35,840. Household income levels show a median of $52,470. The poverty rate stands at 13.19%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,879 | - |
| Families | $74,679 | $82,268 |
| Households | $52,470 | $66,144 |
| Non Families | $34,265 | $44,761 |
Average Income
Median Household Income
Poverty Rate