Grundy County's 2026 population is estimated at 9,684, reflecting a -0.42% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Grundy County is the 88th largest county in Missouri. The 2010 population was 10,254 and has grown -5.56% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.6 years
Female: 42.5 years
Male: 38.4 years
There are 7,254 adults, (2,198 of whom are seniors) in Grundy County.
Female: 4,928 (50.4%)
Male: 4,859 (49.6%)
The racial composition of Grundy County includes 92.56% White, and smaller percentages for other race, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 9,059 | 92.56% |
| Two or more races | 493 | 5.04% |
| Other race | 91 | 0.93% |
| Asian | 73 | 0.75% |
| Black or African American | 50 | 0.51% |
| Native American | 20 | 0.2% |
| Native Hawaiian or Pacific Islander | 1 | 0.01% |
Grundy County 's average per capita income is $42,093. Household income levels show a median of $51,975. The poverty rate stands at 17.58%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $84,438 | - |
| Families | $73,382 | $87,570 |
| Households | $51,975 | $75,460 |
| Non Families | $27,075 | $57,874 |
Average Income
Median Household Income
Poverty Rate
