Linn County's estimated 2026 population is 233,667 with a growth rate of 0.71% in the past year according to the most recent United States census data. Linn County is the 2nd largest county in Iowa. The 2010 population was 211,713 and has seen a growth of 10.37% since that time.
Data after 2023 is projected based on recent change
Overall: 39 years
Female: 39.8 years
Male: 38.3 years
There are 178,147 adults, (39,802 of whom are seniors) in Linn County.
Female: 116,498 (50.7%)
Male: 113,506 (49.3%)
The racial composition of Linn County includes 83.63% White, 5.97% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 192,362 | 83.63% |
| Two or more races | 15,022 | 6.53% |
| Black or African American | 13,735 | 5.97% |
| Asian | 5,504 | 2.39% |
| Other race | 2,821 | 1.23% |
| Native American | 507 | 0.22% |
| Native Hawaiian or Pacific Islander | 53 | 0.02% |
Linn County's average per capita income is $52,326. Household income levels show a median of $77,649. The poverty rate stands at 9.41%.
Name | Median | Mean |
|---|---|---|
| Married Families | $118,707 | $145,389 |
| Families | $100,553 | $127,058 |
| Households | $77,649 | $104,478 |
| Non Families | $46,799 | $63,156 |
Average Income
Median Household Income
Poverty Rate