Demographics of Belfast city, Maine

Belfast city, Maine had 6,988 people on July 1, 2025, by the Census Bureau’s estimate: +34 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Belfast city, in four figures

6,988
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 6,986 ±17.; +0.5%
Change since July 2020: +34 people.; 60.6 ±3.1
Median age: ACS 2020–⁠2024.; $67,679 ±$8,925
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Belfast city, Maine's population grew 0.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Belfast city, Maine's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Belfast city, Maine's population grew 0.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Belfast city, Maine's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	6,954	100.0	100.0
2021	7,026	101.0	100.2
2022	7,005	100.7	100.7
2023	6,999	100.6	101.6
2024	7,000	100.7	102.5
2025	6,988	100.5	103.1

Population of Belfast city, Maine on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	6,954	—
2021	7,026	+72
2022	7,005	−21
2023	6,999	−6
2024	7,000	+1
2025	6,988	−12

Age, 2020–2024

The median age is 60.6 ±3.1: for men 56.8 ±4.1 and for women 61.8 ±3.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Belfast city by age, ACS 2020–2024
Age	People	Share	Maine	United States
Under 5	138 to 478	2.0% to 6.8%	4.5% ±<0.1	5.6% ±<0.1
5 to 17	685 ±209	9.8% ±3.0	13.6% ±0.2	16.3% ±<0.1
18 to 24	131 to 425	1.9% to 6.1%	8.0% ±0.1	9.1% ±<0.1
25 to 44	1,011 ±260	14.5% ±3.7	24.2% ±0.2	26.9% ±<0.1
45 to 64	1,975 ±433	28.3% ±6.2	27.4% ±0.2	24.8% ±<0.1
65 and over	2,729 ±407	39.1% ±5.8	22.4% ±0.2	17.2% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Income and poverty, 2020–2024

Median household income is $67,679 ±$8,925, and income per person $48,291 ±$7,124, in 2024 dollars. The median is $74,733 ±$795 in Maine and $80,734 ±$166 in the United States.

Households by income

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Households in Belfast city by income, ACS 2020–2024
Household income	Households	Share	Maine	United States
Under $25,000	648 ±224	19.1% ±6.5	15.0% ±0.4	14.6% ±<0.1
$25,000 to $49,999	607 ±244	17.9% ±7.1	18.4% ±0.4	16.7% ±<0.1
$50,000 to $74,999	626 ±207	18.4% ±6.0	16.8% ±0.4	15.5% ±<0.1
$75,000 to $99,999	564 ±193	16.6% ±5.6	13.0% ±0.4	12.6% ±<0.1
$100,000 to $149,999	450 ±167	13.2% ±4.9	18.4% ±0.4	17.5% ±<0.1
$150,000 to $199,999	48 to 400	1.4% to 11.8%	9.1% ±0.3	9.6% ±<0.1
$200,000 or more	281 ±116	8.3% ±3.4	9.4% ±0.3	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Belfast city by age, ACS 2020–2024
Age	Below poverty	Rate	Maine	United States
All ages	1,092 ±434	16.0% ±6.4	10.7% ±0.3	12.5% ±0.1
Under 18	57 to 379	7.2% to 36.9%	13.1% ±0.7	16.1% ±0.1
18 to 59	237 to 717	20.5% ±9.6	10.5% ±0.3	11.6% ±0.1
60 and over	201 to 593	11.4% ±5.4	9.7% ±0.4	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in Belfast city, ACS 2020–2024
Measure	Belfast city	Maine	United States
Housing units	4,300 ±314	751,876 ±671	143,775,355 ±10,234
Occupied	79.1% ±7.3	79.4% ±0.3	89.9% ±0.1
Vacant	20.9% ±6.2	20.6% ±0.3	10.1% ±0.1
Owner occupied	68.5% ±6.4	74.3% ±0.5	65.2% ±0.3
Renter occupied	31.5% ±7.1	25.7% ±0.4	34.8% ±0.1
Median home value	$340,900 ±$34,462	$296,600 ±$2,876	$332,700 ±$236
Median gross rent	$962 ±$92	$1,139 ±$13	$1,413 ±$2
Median year built	1967 ±8	1977 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Belfast city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Maine	United States
Hispanic or Latino	51 to 225	0.7% to 3.2%	2.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,272 ±351	89.8% ±5.0	89.9% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	0 to 15	0% to 0.2%	1.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 73	0% to 1.0%	1.1% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 15	0% to 0.2%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 15	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 15	0% to 0.2%	0.4% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	227 to 859	3.2% to 12.3%	4.2% ±0.2	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Belfast city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Maine	United States
Born in the state	3,486 ±442	49.9% ±6.3	59.6% ±0.4	57.3% ±<0.1
Born in another state	3,112 ±484	44.5% ±6.9	35.2% ±0.3	26.9% ±<0.1
Born a citizen outside the states	0 to 104	0% to 1.5%	1.1% ±0.1	1.7% ±<0.1
Born abroad	109 to 571	1.6% to 8.2%	4.1% ±0.1	14.1% ±<0.1
Naturalized citizens	18 to 212	0.3% to 3.0%	2.1% ±0.1	7.4% ±<0.1
Not citizens	20 to 430	0.3% to 6.2%	1.9% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Belfast city among the places and towns of Maine

51st of 81 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Maine page.

Places of Maine near Belfast city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Old Town city	7,470 ±26
Caribou city	7,382 ±28
Topsham CDP	7,271 ±483
Eliot town	7,146 ±39
Rockland city	7,035 ±17
Belfast city	6,986 ±17
Hermon town	6,727 ±18
Skowhegan CDP	6,662 ±392
Lebanon town	6,629 ±22
Fairfield town	6,519 ±19
Oakland town	6,309 ±17

Rankings this appears in

No. 1 Places in Maine by median age
No. 2 Places in Maine by poverty rate
No. 7 Places in Maine by per capita income
No. 21 Places in Maine by homeownership rate
No. 26 Places in Maine by median home value
No. 32 Places in Maine by median rent

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026