Dennis Population

2011–2026

209

2026 projection

129.7% since 2020 (increase)

05010015020025020122014201620182020202220242026

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.
2026209+10.48%
2025208+20.48%
2023206-83.74%
2022214+7958.52%
2021135+4448.35%
202091-5336.81%
2019144-2112.73%
2018165+90120.00%
201775-4034.78%
2016115-2216.06%

Showing 10 of 15 years.

Dennis Demographics

59.2median age

Median age

Female59.6 yrs
Male55.3 yrs

Adults

338
109 seniors · 32%229 other adults

Sex

Female 42.2% · 167Male 57.8% · 229

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 4 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

$87,589median household income

Median household income

$87,589

Half of households earn more, half earn less

Poverty rate

16.7%

About 1 in 6 residents

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

Dennis Marital Status

58% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married58%56%60%
Never married15%24%5%
Divorced8%3%14%
Widowed13%7%22%
Separated6%11%0%

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