Gallatin County's estimated 2026 population is 4,654 with a growth rate of -0.39% in the past year according to the most recent United States census data. Gallatin County is the 98th largest county in Illinois. The 2010 population was 5,574 and has seen a growth of -16.51% 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 and multiracial populations.
White (96.07%)
Two or more races (2.64%)
Black or African American (0.68%)
Native American (0.35%)
Asian (0.27%)
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% |
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