Putnam is located in Linn County, Iowa. Putnam has a 2025 population of 2,694 . Putnam 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 Putnam is $119,282 with a poverty rate of 3.09%. The median age in Putnam is 37.9 years: 38.3 years for males, and 37.1 years for females. For every 100 females there are 115.0 males.
Data after 2023 is projected based on recent change
The racial composition of Putnam includes 96.7% White, and smaller percentages for Asian, Two or more races, Black or African American, other race and multiracial populations.
White (96.7%)
Asian (1.63%)
Two or more races (1%)
Black or African American (0.45%)
Other race (0.22%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,605 | 96.7% |
| Asian | 44 | 1.63% |
| Two or more races | 27 | 1% |
| Black or African American | 12 | 0.45% |
| Other race | 6 | 0.22% |
Married
Widowed
Divorced
Separated
Never Married
Putnam's average per capita income is $60,469. Household income levels show a median of $112,083. The poverty rate stands at 3.09%.
Name | Median | Mean |
|---|---|---|
| Married Families | $150,313 | - |
| Families | $135,795 | $138,167 |
| Households | $112,083 | $119,282 |
| Non Families | $56,818 | $77,049 |
Average Income
Median Household Income
Poverty Rate