Waldo County's 2026 population is estimated at 40,871, reflecting a 0.31% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Waldo County is the 10th largest county in Maine. The 2010 population was 38,824 and has grown 5.27% since 2010.
Data after 2023 is projected based on recent change
Overall: 47.4 years
Female: 48.4 years
Male: 46.5 years
There are 33,068 adults, (10,091 of whom are seniors) in Waldo County.
Female: 20,263 (50.4%)
Male: 19,929 (49.6%)
The racial composition of Waldo County includes 93.43% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 37,552 | 93.43% |
| Two or more races | 1,797 | 4.47% |
| Other race | 335 | 0.83% |
| Black or African American | 218 | 0.54% |
| Asian | 205 | 0.51% |
| Native American | 79 | 0.2% |
| Native Hawaiian or Pacific Islander | 6 | 0.01% |
Waldo County 's average per capita income is $46,261. Household income levels show a median of $72,782. The poverty rate stands at 12%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $99,116 | - |
| Families | $87,896 | $110,082 |
| Households | $72,782 | $91,541 |
| Non Families | $42,092 | $56,443 |
Average Income
Median Household Income
Poverty Rate
