St. Louis County's estimated 2026 population is 997,037 with a growth rate of 0.21% in the past year according to the most recent United States census data. St. Louis County is the largest county in Missouri. The 2010 population was 998,846 and has seen a growth of -0.18% since that time.
Data after 2023 is projected based on recent change
The racial composition of St. Louis County includes 62.97% White, 24.15% Black or African American, 4.69% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (62.97%)
Black or African American (24.15%)
Two or more races (6.43%)
Asian (4.69%)
Other race (1.63%)
Native American (0.11%)
Native Hawaiian or Pacific Islander (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 627,542 | 62.97% |
| Black or African American | 240,688 | 24.15% |
| Two or more races | 64,063 | 6.43% |
| Asian | 46,784 | 4.69% |
| Other race | 16,264 | 1.63% |
| Native American | 1,067 | 0.11% |
| Native Hawaiian or Pacific Islander | 210 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
St. Louis County's average per capita income is $55,226. Household income levels show a median of $81,340. The poverty rate stands at 9.59%.
Name | Median | Mean |
|---|---|---|
| Married Families | $132,847 | $182,754 |
| Families | $108,392 | $152,088 |
| Households | $81,340 | $121,117 |
| Non Families | $47,961 | $67,005 |
Average Income
Median Household Income
Poverty Rate
