Nassau is located in Sioux County, Iowa. Nassau has a 2025 population of 2,066. Nassau is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Nassau is $116,643 with a poverty rate of 2.81%.The median age in Nassau is 31.4 years: 32.4 years for males, and 31.2 years for females.
Data after 2023 is projected based on recent change
The racial composition of Nassau includes 84.03% White, and smaller percentages for other race, Asian, Black or African American, Native American and multiracial populations.
White (84.0%)
Two or more races (8.4%)
Other race (2.7%)
Asian (2.3%)
Black or African American (1.8%)
Native American (0.8%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,736 | 84.03% |
| Two or more races | 174 | 8.42% |
| Other race | 55 | 2.66% |
| Asian | 47 | 2.27% |
| Black or African American | 38 | 1.84% |
| Native American | 16 | 0.77% |
Married
Widowed
Divorced
Separated
Never Married
Nassau's average per capita income is $53,925. Household income levels show a median of $85,227. The poverty rate stands at 2.81%.
Name | Median | Mean |
|---|---|---|
| Married Families | $129,766 | - |
| Families | $121,625 | $143,367 |
| Households | $85,227 | $116,643 |
| Non Families | $52,981 | $60,142 |
Average Income
Median Household Income
Poverty Rate