Demographics of Millis town, Massachusetts

Millis town, Massachusetts had 9,463 people on July 1, 2025, by the Census Bureau’s estimate: +959 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Millis town, in four figures

9,463
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 8,888 ±24.; +11.3%
Change since July 2020: +959 people.; 46.4 ±3.0
Median age: ACS 2020–⁠2024.; $155,996 ±$8,817
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 town, so the change is the difference between one July estimate and the next.

Millis town, Massachusetts's population grew 11.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Millis town, Massachusetts'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).

U.S. Census Bureau — Census Bureau population estimates — incorporated places and New England towns

About this chart

The figures

Millis town, Massachusetts's population grew 11.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Millis town, Massachusetts'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	8,504	100.0	100.0
2021	8,671	102.0	100.2
2022	8,864	104.2	100.7
2023	9,056	106.5	101.6
2024	9,270	109.0	102.5
2025	9,463	111.3	103.1

Population of Millis town, Massachusetts on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	8,504	—
2021	8,671	+167
2022	8,864	+193
2023	9,056	+192
2024	9,270	+214
2025	9,463	+193

Age, 2020–2024

The median age is 46.4 ±3.0: for men 42.7 ±4.5 and for women 49.7 ±5.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Millis town by age, ACS 2020–2024
Age	People	Share	Massachusetts	United States
Under 5	534 ±147	6.0% ±1.7	5.0% ±<0.1	5.6% ±<0.1
5 to 17	1,103 ±206	12.4% ±2.3	14.4% ±0.1	16.3% ±<0.1
18 to 24	707 ±239	8.0% ±2.7	9.8% ±0.1	9.1% ±<0.1
25 to 44	1,909 ±277	21.5% ±3.1	27.1% ±0.1	26.9% ±<0.1
45 to 64	2,550 ±389	28.7% ±4.4	25.9% ±0.1	24.8% ±<0.1
65 and over	2,085 ±347	23.5% ±3.9	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $155,996 ±$8,817, and income per person $71,331 ±$10,195, in 2024 dollars. The median is $103,960 ±$527 in Massachusetts and $80,734 ±$166 in the United States.

Households by income

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Households in Millis town by income, ACS 2020–2024
Household income	Households	Share	Massachusetts	United States
Under $25,000	272 ±118	8.2% ±3.5	13.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	261 ±106	7.9% ±3.2	12.5% ±0.2	16.7% ±<0.1
$50,000 to $74,999	204 ±85	6.2% ±2.5	12.0% ±0.2	15.5% ±<0.1
$75,000 to $99,999	45 to 141	1.4% to 4.3%	10.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	668 ±169	20.2% ±4.9	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	692 ±237	20.9% ±7.0	11.9% ±0.1	9.6% ±<0.1
$200,000 or more	1,119 ±199	33.8% ±5.6	22.3% ±0.2	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 Millis town by age, ACS 2020–2024
Age	Below poverty	Rate	Massachusetts	United States
All ages	204 to 644	2.3% to 7.3%	10.0% ±0.1	12.5% ±0.1
Under 18	8 to 208	0.6% to 12.6%	11.7% ±0.3	16.1% ±0.1
18 to 59	60 to 316	1.4% to 7.4%	9.3% ±0.2	11.6% ±0.1
60 and over	49 to 207	1.7% to 6.9%	10.4% ±0.2	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 Millis town, ACS 2020–2024
Measure	Millis town	Massachusetts	United States
Housing units	3,471 ±195	3,030,406 ±453	143,775,355 ±10,234
Occupied	95.3% ±2.4	91.9% ±0.2	89.9% ±0.1
Vacant	1.5% to 7.9%	8.1% ±0.2	10.1% ±0.1
Owner occupied	83.2% ±3.0	62.5% ±0.3	65.2% ±0.3
Renter occupied	16.8% ±4.0	37.5% ±0.2	34.8% ±0.1
Median home value	$603,500 ±$30,556	$562,100 ±$2,169	$332,700 ±$236
Median gross rent	$1,696 ±$279	$1,762 ±$9	$1,413 ±$2
Median year built	1974 ±4	1964 ±1	1980 ±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%.

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 Millis town by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Massachusetts	United States
Hispanic or Latino	86 to 574	1.0% to 6.5%	13.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,517 ±420	84.6% ±4.7	66.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 212	< 0.1% to 2.4%	6.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	182 to 664	2.0% to 7.5%	7.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 19	0% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.3%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 47	0% to 0.5%	1.2% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	226 to 752	2.5% to 8.5%	5.1% ±0.1	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 Millis town by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Massachusetts	United States
Born in the state	6,293 ±463	70.8% ±5.2	58.7% ±0.2	57.3% ±<0.1
Born in another state	1,500 ±255	16.9% ±2.9	20.3% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 119	0% to 1.3%	2.9% ±0.1	1.7% ±<0.1
Born abroad	1,039 ±401	11.7% ±4.5	18.0% ±0.1	14.1% ±<0.1
Naturalized citizens	272 to 950	3.1% to 10.7%	9.7% ±0.1	7.4% ±<0.1
Not citizens	202 to 654	2.3% to 7.4%	8.3% ±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%.

Millis town among the places and towns of Massachusetts

202nd of 291 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Massachusetts page.

Places of Massachusetts near Millis town in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Blackstone town	9,255 ±21
Southwick town	9,217 ±33
Douglas town	9,207 ±19
Williamstown town	9,150 ±37
Townsend town	9,100 ±19
Millis town	8,888 ±24
Athol CDP	8,801 ±568
Ayer town	8,645 ±27
Lancaster town	8,606 ±19
Montague town	8,482 ±24
Georgetown town	8,474 ±29

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

Data retrieved September 25, 2026