Lyon County's estimated 2026 population is 12,304 with a growth rate of -0.4% in the past year according to the most recent United States census data. Lyon County is the 61st largest county in Iowa. The 2010 population was 11,569 and has seen a growth of 6.35% since that time.
Data after 2023 is projected based on recent change
Overall: 38.2 years
Female: 39 years
Male: 36.8 years
There are 8,737 adults, (2,320 of whom are seniors) in Lyon County.
Female: 5,931 (48.8%)
Male: 6,231 (51.2%)
The racial composition of Lyon County includes 93.7% 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 | 11,396 | 93.7% |
| Two or more races | 495 | 4.07% |
| Other race | 146 | 1.2% |
| Asian | 59 | 0.49% |
| Black or African American | 43 | 0.35% |
| Native American | 19 | 0.16% |
| Native Hawaiian or Pacific Islander | 4 | 0.03% |
Lyon County's average per capita income is $49,836. Household income levels show a median of $76,746. The poverty rate stands at 5.33%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,948 | - |
| Families | $91,574 | $113,028 |
| Households | $76,746 | $95,299 |
| Non Families | $41,521 | $53,261 |
Average Income
Median Household Income
Poverty Rate