Marlborough Population

1790–2026

42,901

2026 projection

3% 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 Marlborough. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202642,901+1290.30%
202542,772+6191.47%
202442,153+4781.15%
202341,675+3370.82%
202241,338+1650.40%
202141,173-4621.11%
202041,635+2,0315.13%
201939,604-1400.35%
201839,744-820.21%
201739,826+70.02%

Showing 10 of 39 years.

Marlborough Demographics

37.5median age

Median age

Female37 yrs
Male38 yrs

Adults

32,994
6,203 seniors · 19%26,791 other adults

Sex

Female 50.9% · 21,194Male 49.1% · 20,453

Population by age

MaleFemale85+ years, male: 25485+ years, female: 65680–84 years, male: 30480–84 years, female: 39175–79 years, male: 46275–79 years, female: 56870–74 years, male: 82570–74 years, female: 74265–69 years, male: 93765–69 years, female: 1,06460–64 years, male: 1,50060–64 years, female: 1,34655–59 years, male: 1,46655–59 years, female: 1,29850–54 years, male: 1,27050–54 years, female: 1,48345–49 years, male: 1,12645–49 years, female: 1,04540–44 years, male: 1,27140–44 years, female: 1,18535–39 years, male: 1,89535–39 years, female: 1,57530–34 years, male: 1,97330–34 years, female: 2,06125–29 years, male: 1,32425–29 years, female: 1,27220–24 years, male: 1,23920–24 years, female: 1,43015–19 years, male: 1,16715–19 years, female: 90910–14 years, male: 91810–14 years, female: 1,1865–9 years, male: 1,2735–9 years, female: 1,0310–4 years, male: 1,2490–4 years, female: 1,95285+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K

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 416 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

Marlborough Income

$91,968median household income

Median household income

$91,968

Half of households earn more, half earn less

Median earnings

$57,883

Typical yearly pay for a worker 25 or older.

Poverty rate

9.6%

About 1 in 10 residents

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

Marlborough Marital Status

50% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married50%52%47%
Never married33%35%30%
Divorced11%9%14%
Widowed5%3%7%
Separated2%1%2%

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