Westfield Population

1790–2026

40,620

2026 projection

1.2% since 2020 (increase)

010K20K30K40K50K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Westfield. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202640,620+740.18%
202540,546+940.23%
202440,452+1910.47%
202340,261-1650.41%
202240,426-1330.33%
202140,559+4061.01%
202040,153-1,0072.45%
201941,160-1440.35%
201841,304-930.22%
201741,397-1790.43%

Showing 10 of 39 years.

Westfield Demographics

39.9median age

Median age

Female40.9 yrs
Male38.2 yrs

Adults

33,054
7,534 seniors · 23%25,520 other adults

Sex

Female 51.7% · 20,869Male 48.3% · 19,509

Population by age

MaleFemale85+ years, male: 18985+ years, female: 84380–84 years, male: 42580–84 years, female: 28675–79 years, male: 61275–79 years, female: 66670–74 years, male: 82770–74 years, female: 1,09265–69 years, male: 1,18565–69 years, female: 1,40960–64 years, male: 1,34160–64 years, female: 1,40355–59 years, male: 1,39955–59 years, female: 1,23250–54 years, male: 1,32550–54 years, female: 1,34345–49 years, male: 97245–49 years, female: 1,04240–44 years, male: 1,04940–44 years, female: 1,49335–39 years, male: 1,15435–39 years, female: 1,01930–34 years, male: 1,49530–34 years, female: 1,18625–29 years, male: 1,17025–29 years, female: 1,47420–24 years, male: 1,57220–24 years, female: 2,16615–19 years, male: 1,84515–19 years, female: 1,44910–14 years, male: 1,13010–14 years, female: 7875–9 years, male: 1,2655–9 years, female: 1,1730–4 years, male: 5540–4 years, female: 80685+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 404 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Westfield Income

$87,753median household income

Median household income

$87,753

Half of households earn more, half earn less

Median earnings

$59,252

Typical yearly pay for a worker 25 or older.

Poverty rate

10.7%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Westfield Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%49%44%
Never married39%41%37%
Divorced8%6%10%
Widowed6%3%8%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year