Dennis Population

2010–2026

895

2026 projection

19% since 2020 (increase)

02004006008001K201020122014201620182020202220242026

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 Dennis. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026895+252.87%
2025870+161.87%
2024854+212.52%
2023833+263.22%
2022807+303.86%
2021777+253.32%
2020752+752—
201900—
201800—
201700—

Showing 10 of 17 years.

Dennis Demographics

36.9median age

Median age

Female35.6 yrs
Male42 yrs

Adults

891
99 seniors · 11%792 other adults

Sex

Female 47.8% · 670Male 52.2% · 732

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 14 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

Dennis Income

$139,383median household income

Median household income

$139,383

Half of households earn more, half earn less

Median earnings

$58,399

Typical yearly pay for a worker 25 or older.

Poverty rate

1.7%

About 1 in 58 residents

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

Dennis Marital Status

88% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married88%84%93%
Never married10%16%3%
Divorced0%0%0%
Widowed2%0%4%
Separated0%0%0%

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