Dennis Flag

Dennis

County Seat:
No
Area (mi²):
4.911
State:
Massachusetts

Dennis is a CDP located in Barnstable County, Massachusetts. Dennis has a 2026 population of 1,787. Dennis is currently declining at a rate of -2.08% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Dennis is $109,882 with a poverty rate of 4.33%. The median age in Dennis is 63.3 years: 65.5 years for males, and 59.6 years for females. For every 100 females there are 74.9 males.

1.8K
Total Population
364
Density (mi²)
-38 -2.08%
Growth

Dennis Population

Dennis Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,787-38-2.08%
20251,825-39-2.09%

Median Age

Overall: 63.3 years
Female: 59.6 years
Male: 65.5 years

Dennis Adults

There are 1,991 adults, (1,127 of whom are seniors) in Dennis.

Sex Ratio

Female: 1,386 (57.2%)
Male: 1,038 (42.8%)

Demographics

The racial composition of Dennis includes 90.84% White, 8.5% other race, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,20290.84%
Other race2068.5%
Two or more races160.66%
Race
Population ↓
Percentage (of total)
Other race2068.5%
Race
Population ↓
Percentage (of total)
White2,20290.84%
Two or more races160.66%

Dennis Marital Status

Economics and Income Statistics

Dennis ' average per capita income is $64,242. Household income levels show a median of $109,882. The poverty rate stands at 4.33%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$155,203-
Families$151,250$185,033
Households$109,882$151,001
Non Families$61,633$74,498

$64,242

Average Income

$109,882

Median Household Income

4.33%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)