Demographics of Westfield city, Massachusetts

Westfield city, Massachusetts had 40,546 people on July 1, 2025, by the Census Bureau’s estimate: +393 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Westfield city, in four figures

40,546
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 40,378 ±33.; +1.0%
Change since July 2020: +393 people.; 39.9 ±1.8
Median age: ACS 2020–⁠2024.; $87,753 ±$5,590
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.

Westfield city, Massachusetts's population grew 1.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Westfield city, 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).

Source: The Census Bureau

About this chart

The figures

Westfield city, Massachusetts's population grew 1.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Westfield city, 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	40,153	100.0	100.0
2021	40,559	101.0	100.2
2022	40,426	100.7	100.7
2023	40,261	100.3	101.6
2024	40,452	100.7	102.5
2025	40,546	101.0	103.1

Population of Westfield city, Massachusetts on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	40,153	—
2021	40,559	+406
2022	40,426	−133
2023	40,261	−165
2024	40,452	+191
2025	40,546	+94

Age, 2020–2024

The median age is 39.9 ±1.8: for men 38.2 ±2.5 and for women 40.9 ±1.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Westfield city by age, ACS 2020–2024
Age	People	Share	Massachusetts	United States
Under 5	1,360 ±366	3.4% ±0.9	5.0% ±<0.1	5.6% ±<0.1
5 to 17	5,964 ±702	14.8% ±1.7	14.4% ±0.1	16.3% ±<0.1
18 to 24	5,423 ±561	13.4% ±1.4	9.8% ±0.1	9.1% ±<0.1
25 to 44	10,040 ±878	24.9% ±2.2	27.1% ±0.1	26.9% ±<0.1
45 to 64	10,057 ±707	24.9% ±1.8	25.9% ±0.1	24.8% ±<0.1
65 and over	7,534 ±610	18.7% ±1.5	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $87,753 ±$5,590, and income per person $41,820 ±$2,183, 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 Westfield city by income, ACS 2020–2024
Household income	Households	Share	Massachusetts	United States
Under $25,000	2,201 ±390	13.9% ±2.4	13.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	1,846 ±310	11.7% ±1.9	12.5% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,684 ±451	17.0% ±2.8	12.0% ±0.2	15.5% ±<0.1
$75,000 to $99,999	2,358 ±401	14.9% ±2.5	10.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	3,190 ±488	20.2% ±3.0	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	1,581 ±349	10.0% ±2.2	11.9% ±0.1	9.6% ±<0.1
$200,000 or more	1,962 ±294	12.4% ±1.8	22.3% ±0.2	13.4% ±0.1

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 Westfield city by age, ACS 2020–2024
Age	Below poverty	Rate	Massachusetts	United States
All ages	4,026 ±932	10.7% ±2.5	10.0% ±0.1	12.5% ±0.1
Under 18	913 ±343	12.5% ±4.5	11.7% ±0.3	16.1% ±0.1
18 to 59	2,158 ±587	10.5% ±2.8	9.3% ±0.2	11.6% ±0.1
60 and over	955 ±256	9.7% ±2.5	10.4% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Westfield city, ACS 2020–2024
Measure	Westfield city	Massachusetts	United States
Housing units	16,834 ±623	3,030,406 ±453	143,775,355 ±10,234
Occupied	94.0% ±4.9	91.9% ±0.2	89.9% ±0.1
Vacant	6.0% ±1.8	8.1% ±0.2	10.1% ±0.1
Owner occupied	68.6% ±2.6	62.5% ±0.3	65.2% ±0.3
Renter occupied	31.4% ±3.3	37.5% ±0.2	34.8% ±0.1
Median home value	$325,100 ±$10,694	$562,100 ±$2,169	$332,700 ±$236
Median gross rent	$1,117 ±$60	$1,762 ±$9	$1,413 ±$2
Median year built	1964 ±3	1964 ±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 Westfield city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Massachusetts	United States
Hispanic or Latino	3,815 ±742	9.4% ±1.8	13.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	33,620 ±999	83.3% ±2.5	66.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	287 ±102	0.7% ±0.3	6.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	1,251 ±510	3.1% ±1.3	7.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 84	0% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 32	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	16 to 244	< 0.1% to 0.6%	1.2% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,224 ±418	3.0% ±1.0	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 Westfield city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Massachusetts	United States
Born in the state	28,685 ±1,014	71.0% ±2.5	58.7% ±0.2	57.3% ±<0.1
Born in another state	6,744 ±703	16.7% ±1.7	20.3% ±0.2	26.9% ±<0.1
Born a citizen outside the states	1,164 ±396	2.9% ±1.0	2.9% ±0.1	1.7% ±<0.1
Born abroad	3,785 ±864	9.4% ±2.1	18.0% ±0.1	14.1% ±<0.1
Naturalized citizens	1,699 ±386	4.2% ±1.0	9.7% ±0.1	7.4% ±<0.1
Not citizens	2,086 ±824	5.2% ±2.0	8.3% ±0.1	6.8% ±<0.1

Westfield city among the places and towns of Massachusetts

39th 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 Westfield city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Beverly city	42,665 ±49
Billerica town	42,003 ±32
Woburn city	41,939 ±26
Fitchburg city	41,798 ±32
Marlborough city	41,647 ±46
Westfield city	40,378 ±33
Chelsea city	39,908 ±42
Braintree Town city	38,899 ±38
Shrewsbury town	38,876 ±41
Amherst Town city	38,182 ±37
Holyoke city	37,813 ±39

Elsewhere on the site

Reported crime in Westfield city, Massachusetts

Rankings this appears in

No. 16 Places in Massachusetts by poverty rate
No. 34 Places in Massachusetts by Hispanic or Latino share
No. 82 Places in Massachusetts by foreign-born share
No. 112 Places in Massachusetts by median age
No. 163 Places in Massachusetts by homeownership rate
No. 179 Places in Massachusetts by median household income

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