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.
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 (1.6%)
Two or more races (1.0%)
Black or African American (0.4%)
Other race (0.2%)
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