Waldo County, Maine Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 11th-largest in Maine
The population of Waldo County, Maine is 40,006 as of the 2023 American Community Survey, making it the 11th-largest county in Maine. The median household income is $68,441, the median home value is $239,100, and the median age is 46.9.
The population of Waldo County has grown 4.6% since 2010 (38,824 → 40,617), a +0.32% annualized rate.
40,006
Population
+0.32%
Annual growth
55
People / sq mi
$68,441
Median Income
$239,100
Median Home Value
Waldo County covers 730 sq mi of land at 54.8 people per square mile.
About Waldo County, ME
Remote work is unusually prominent in Waldo County: 15.1% of workers primarily work from home, above the 14.0% national rate. Waldo County is a county in Maine with a population of 40,006. It ranks #11 among counties in Maine by population.
Median household income is $68,441, below the US median of $78,538. Poverty runs at 7.3%, below the national 12.4%. Home values run above average at $239,100, with typical rent around $969.
Educational attainment is on the higher side for US counties — 34.8% of adults hold a four-year degree, near the national 35.0%. An unusually large 15.1% of workers are remote, above the national 14.0%, and the average commute runs about 26 minutes each way.
The remote-work concentration is telling in Waldo County — it skews toward higher-income, college-educated workers and reshapes both commute patterns and housing demand.
Waldo County Population History (2010-2024)
The county of Waldo County had a population of 38,824 in 2010 and 40,617 in 2024, a 4.6% growth over 14 years. The peak was 40,617 in 2024. Average annual growth rate: 0.32%.
40,617
Population (2024)
38,824
Population (2010)
40,617
Peak (2024)
0.32%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 38,824 |
| 2011 | 38,865 |
| 2012 | 38,934 |
| 2013 | 39,041 |
| 2014 | 39,056 |
| 2015 | 39,143 |
| 2016 | 39,468 |
| 2017 | 39,791 |
| 2018 | 39,678 |
| 2019 | 39,755 |
| 2020 | 39,666 |
| 2021 | 39,974 |
| 2022 | 40,212 |
| 2023 | 40,490 |
| 2024 | 40,617 |
Race & Ethnicity
| White | 93.9% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
46.9
Median Age
50.4%
Female
49.6%
Male
24.5%
Age 65+
Age Distribution
Children (under 15): 14.7% · Seniors (65+): 24.5%
Income & Poverty
| Median household income | $68,441$-3,332 vs state |
| Mean household income | $86,416 |
| Per-capita income | $38,183 |
| Poverty rate | 7.3%+0.8% vs state |
| Unemployment rate | 2.6% |
| Employment-to-population | 55.9% |
Top Industries by Employment
The largest employment sector in Waldo County is professional & business services, accounting for 26.5% of workers.
How residents commute
0.6%
Drive alone
3.6%
Carpool
72.2%
Public transit
15.1%
Work from home
26.2 min
Avg commute
Housing
$239,100$-27,300 vs state
Median home value
$969
Median rent
80.9%
Homeownership rate
22,118
Total housing units
79.0%
Occupied
21.0%
Vacant
19.1%
Renter-occupied
Social & access
90.6%
With health insurance
93.4%
With broadband internet
37.6%
Foreign-born
7.9%
Veterans (18+)
16.3%
With a disability
95.3%
Speak language other than English at home
Education
93.7%
High School+
34.8%
Bachelor's+
Largest cities in Maine
Other counties in Maine
Part of Maine
Metro areas in Maine
County rankings
Frequently Asked Questions
Waldo County, Maine has a population of 40,006 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 11th-largest county in Maine. Population density is 55 people per square mile.
The population of Waldo County has grown 4.6% since 2010 (38,824 → 40,617), a +0.32% annualized rate.
The median household income in Waldo County, Maine is $68,441, with mean (average) household income of $86,416 and per-capita income of $38,183. 7.3% of residents live below the federal poverty level.
In Waldo County, the largest racial and ethnic groups are White (93.9%), Hispanic or Latino (1.3%), Black or African American (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Waldo County, Maine is 46.9 years. Residents are 50.4% female and 49.6% male.
The median home value in Waldo County is $239,100 and median monthly rent is $969. 80.9% of occupied housing units are owner-occupied. The county has 22,118 total housing units, 21.0% of which are vacant.
The largest employment sector in Waldo County, Maine is professional, scientific, and management services, employing 26.5% of workers. The unemployment rate is 2.6%.
Portland is among the largest cities associated with Waldo County, Maine, with a population of 68,505.
Waldo County, ME Climate
Waldo County, ME has an average annual temperature of 6.5°C (44°F) and receives about 1177 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
6.5°C
Avg Temp
1177
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -8° / 18° | 87 mm |
| February | -6° / 21° | 81 mm |
| March | -1° / 30° | 95 mm |
| April | 5° / 42° | 105 mm |
| May | 12° / 53° | 102 mm |
| June | 17° / 62° | 93 mm |
| July | 20° / 67° | 86 mm |
| August | 19° / 66° | 89 mm |
| September | 14° / 57° | 93 mm |
| October | 8° / 47° | 105 mm |
| November | 3° / 37° | 128 mm |
| December | -4° / 24° | 113 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Waldo County, ME
The most comfortable months to visit Waldo County, ME are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 26°C high). The coldest is January (near -13°C low). November is usually the wettest month.
Where to stay near Waldo County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.