Cambridge Population

1790–2026

124K

2026 projection

6.7% since 2020 (increase)

020K40K60K80K100K120K140K18001850190019502000

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 Cambridge. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026123,996+1,4081.15%
2025122,588+7510.62%
2024121,837+6510.54%
2023121,186+1,3251.11%
2022119,861+6,8906.10%
2021112,971-3,2312.78%
2020116,202-2,7862.34%
2019118,988+7970.67%
2018118,191+1,2481.07%
2017116,943+1,1831.02%

Showing 10 of 39 years.

Cambridge Demographics

30.4median age

Median age

Female30.9 yrs
Male30 yrs

Adults

104,106
14,440 seniors · 14%89,666 other adults

Sex

Female 49.6% · 58,900Male 50.4% · 59,896

Population by age

MaleFemale85+ years, male: 70285+ years, female: 81480–84 years, male: 73780–84 years, female: 96275–79 years, male: 1,04375–79 years, female: 1,54670–74 years, male: 1,79870–74 years, female: 2,07065–69 years, male: 2,06165–69 years, female: 2,70760–64 years, male: 2,09360–64 years, female: 2,28755–59 years, male: 1,96155–59 years, female: 1,93150–54 years, male: 2,12950–54 years, female: 2,09845–49 years, male: 2,58545–49 years, female: 2,48840–44 years, male: 3,26640–44 years, female: 2,97935–39 years, male: 4,52835–39 years, female: 4,78330–34 years, male: 6,99030–34 years, female: 6,24225–29 years, male: 9,51625–29 years, female: 8,95920–24 years, male: 9,05320–24 years, female: 9,28915–19 years, male: 4,18215–19 years, female: 4,53310–14 years, male: 2,09310–14 years, female: 1,4635–9 years, male: 2,4195–9 years, female: 1,5260–4 years, male: 2,7400–4 years, female: 2,22385+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K

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 1,188 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

Cambridge Income

$130,748median household income

Median household income

$130,748

Half of households earn more, half earn less

Median earnings

$83,900

Typical yearly pay for a worker 25 or older.

Poverty rate

12.8%

About 1 in 8 residents

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

Cambridge Marital Status

32% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married32%33%31%
Never married59%61%58%
Divorced6%4%7%
Widowed2%1%4%
Separated<1%<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