Share of the population by age and sex, five-year groups

Population of Maine, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2021  +1 +5

1,379,009 people lived in Maine on July 1, 2021: the 42nd-largest population among the 50 states and the District of Columbia. The median age was 44.9 years (United States: 38.9); more residents are 65 or older (22.4%) than under 15 (14.9%): an ageing, top-heavy pyramid. There were 96.1 men for every 100 women. Since 2010 the population has grown by 3.9%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2021
Population
1,379,009
Rank by population
42nd of 51
Median age
44.9
Men per 100 women
96.1
Under 15
14.9%
15–64
62.7%
65 and over
22.4%
Child dependency
23.7
Old-age dependency
35.7
Change since 2010
+3.9%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2021
AgeMenWomenTotalShare
0-431,96230,35562,3174.5%
5-935,11633,27568,3915.0%
10-1438,27536,15274,4275.4%
15-1941,72439,15480,8785.9%
20-2439,77138,59178,3625.7%
25-2938,36237,90676,2685.5%
30-3442,75842,79685,5546.2%
35-3941,93842,68084,6186.1%
40-4439,59840,28579,8835.8%
45-4938,25339,30277,5555.6%
50-5444,20245,90890,1106.5%
55-5949,59952,723102,3227.4%
60-6452,43456,812109,2467.9%
65-6947,74852,525100,2737.3%
70-7440,87845,05585,9336.2%
75-7925,63729,35454,9914.0%
80-8414,86919,09433,9632.5%
85+12,63521,28333,9182.5%
How Maine compares with similar-sized states, 2021
RankStateResidentsRelative
39 West Virginia 1,785,921
40 Hawaii 1,446,909
41 New Hampshire 1,387,907
42 Maine 1,379,009
43 Montana 1,106,416
44 Rhode Island 1,097,381
45 Delaware 1,005,130
Frequently asked questions about Maine's population
What is the population of Maine?
Maine had an estimated 1,379,009 residents on July 1, 2021, according to the U.S. Census Bureau, Population Estimates Program. That ranks 42nd among the 51 states and the District of Columbia.
What is the median age in Maine?
The median age in Maine was 44.9 years in 2021, the 1st oldest of the 51 states and DC. That is 6.0 years older than the national median of 38.9.
How many people in Maine are 65 or older?
About 309,078 residents of Maine (22.4%) were 65 or older in 2021, against 14.9% under 15 and 62.7% aged 15 to 64.
What does the population pyramid of Maine show?
In 2021, Maine: more residents are 65 or older (22.4%) than under 15 (14.9%): an ageing, top-heavy pyramid. There were 96.1 men for every 100 women.
How fast is the population of Maine changing?
The population of Maine grew by 3.9% between 2010 and 2021, and by 1.1% in the last year.
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