• county
  • FIPS 23027
  • Largest town: Belfast

Waldo County, Maine

Waldo County had 40,617 residents in the Census Vintage 2024 estimate, on 730.2 square miles of land. It ranks 11th of 16 in Maine by population and 12th by land area.

Population
40,617
#11 of 16 in Maine · #1,181 in US
Area
730.2 sq mi
#12 of 16 in Maine · #1,213 in US
Density
56 / sq mi
#8 of 16 in Maine · #1,373 in US
Median household income
$68,345
#7 of 16 in Maine · #1,112 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Waldo County within Maine. Pin: Augusta.

Measure from here

Tools and pages that start from Waldo County

Waldo County population, land area and income

Waldo County had 40,617 residents in the Census Vintage 2024 estimate, on 730.2 square miles of land. It ranks 11th of 16 in Maine by population and 12th by land area. That works out to 55.6 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Maine has 54,142 residents; Waldo County is somewhat smaller.

Its SAIPE 2023 median household income of $68,345 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

40,617

3144th1st

1181st of 3,144 (US)

Land area

730 sq mi

3144th1st

1213th of 3,144 (US)

Density

55.6 / sq mi

3144th1st

1373rd of 3,144 (US)

Median household income

$68,345

3143rd1st

1112th of 3,143 (US)

Rank within Maine (16)

Population

40,617

16th1st

11th of 16 (ME)

Land area

730 sq mi

16th1st

12th of 16 (ME)

Density

55.6 / sq mi

16th1st

8th of 16 (ME)

Median household income

$68,345

16th1st

7th of 16 (ME)

How Waldo County's population changed since 2020

Waldo County gained 951 residents between the July 2020 and July 2024 estimates, a rise of 2.4%. That ranks 11th of 16 in Maine for growth. The median Maine county changed by +3.0%, and the state as a whole by +3.0%.

Since the April 2020 estimates base, Waldo County recorded 1,366 births and 2,183 deaths, a natural change of -817. Net international migration added +74 and net domestic migration, people moving to or from other US counties, came to +1,731. The largest single component was domestic migration, which added 1,731 people.

39.7k202040.0k202140.2k202240.5k202340.6k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,366
Deaths
2,183
Net international migration
+74
Net domestic migration
+1,731
Change, July 2023 to July 2024
+127

Where Waldo County is

The Census internal point of Waldo County is at 44.475000, -69.117400. It sits in UTM zone 19N. The map shades Maine's 16 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Waldo County outlined. Dots are towns of 1,000+ people with residents in it.

York County: +3.7%Hancock County: +2.6%Washington County: +0.9%Aroostook County: -0.4%Androscoggin County: +3.7%Sagadahoc County: +2.3%Franklin County: +4.9%Oxford County: +3.7%Waldo County: +2.4%Somerset County: +1.7%Cumberland County: +3.4%Kennebec County: +3.0%Piscataquis County: +3.8%Penobscot County: +3.1%Knox County: +0.8%Lincoln County: +3.5%
Change 2020 to 2024
  1. < +1.7%
  2. < +2.6%
  3. < +3.4%
  4. < +3.7%
  5. ≥ +3.7%
no data

Orange pin: Waldo County internal point. Dark pin: Augusta.

Internal point

Decimal
44.475000, -69.117400
DMS
44°28'30.00"N 69°07'2.64"W
UTM
19N 490663.0E 4924638.9N
Geohash
dryv50qjx
Plus code
87PGFVGM+22

Towns in Waldo County

One incorporated place of 1,000+ people has residents in Waldo County, 6,993 people together, or 17% of the county. Each figure counts only the part of the town inside Waldo County; towns marked "part" extend into another county. The largest is Belfast with 6,993.

  1. 01Belfast6,993
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Waldo County

The Census 2024 county adjacency file lists 6 neighbors for Waldo County. The most populous is Penobscot County, ME, with 156,840 residents. Distances run between Census internal points in a straight line.

Distance to Augusta and the nearest big city

Augusta is 34.8 miles WSW of Waldo County's internal point in a straight line. The nearest place of 100,000 or more is Manchester, NH (population 116,386), 155.2 miles away. The nearest place of 10,000 or more is Waterville, ME (population 17,336), 27.2 miles away.

Waldo County FIPS code

The FIPS code of Waldo County is 23027: state code 23 for Maine plus county code 027. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $68,345.

Questions people ask

What is the population of Waldo County, Maine?

The Census Vintage 2024 estimate for July 1, 2024 is 40,617. That is up 951 people (2.4%) from the July 2020 estimate of 39,666.

What is the FIPS code of Waldo County?

23027. The first two digits (23) are Maine; the last three (027) identify the county.

What is the largest town in Waldo County?

Belfast, with 6,993 residents inside Waldo County in 2024.

Which counties border Waldo County?

6 county-equivalents border it in the Census 2024 adjacency file: Penobscot County, ME; Kennebec County, ME; Hancock County, ME; Somerset County, ME; Knox County, ME; Lincoln County, ME.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.