Waldo County Flag

Waldo County

State:
Maine
County Seat:
Belfast

Waldo County's estimated 2025 population is 40,744 with a growth rate of 0.31% in the past year according to the most recent United States census data. Waldo County is the 11th largest county in Maine. The 2010 population was 38,824 and has seen a growth of 4.95% since that time.

40,744
Total Population
56
Population Density (mi²)
11
Population Rank (State)
127 0.31%
Annual Population Growth

Waldo County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)