Gallatin County's estimated 2025 population is 4,364 with a growth rate of -3.39% in the past year according to the most recent United States census data. Gallatin County is the 99th largest county in Illinois. The 2010 population was 5,574 and has seen a growth of -21.71% since that time.
Data after 2023 is projected based on recent change
The racial composition of Gallatin County includes 96.07% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.
White
Two or more races
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
Other race
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,666 | 96.07% |
| Two or more races | 128 | 2.64% |
| Black or African American | 33 | 0.68% |
| Native American | 17 | 0.35% |
| Asian | 13 | 0.27% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
| Other race | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Gallatin County's average per capita income is $40,896. Household income levels show a median of $54,626. The poverty rate stands at 15.55%.
Name | Median | Mean |
|---|---|---|
| Married Families | $84,868 | - |
| Families | $72,386 | $117,581 |
| Households | $54,626 | $88,438 |
| Non Families | $31,250 | $40,260 |
Average Income
Median Household Income
Poverty Rate