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The Dennis CDP⁽¹⁾ had a population of 2,424 as of 2020-2024 American Community Survey 5-Year Estimates. Dennis ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Massachusetts. See peer rankings below.

The primary coordinate point for Dennis is located at latitude 41.7354 and longitude -70.1939 in Barnstable County. The formal boundaries for the Dennis Census Designated Place encompass a land area of 4.88 sq. miles and a water area of 0.21 sq. miles. Barnstable County is in the Eastern time zone (GMT -5).

The Dennis Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Dennis Census Designated Place is located within Town of Dennis, a minor civil division (MCD) of Barnstable County.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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Dennis Demographic Data
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Dennis, MA Data & Demographics

Source: 2020-2024 American Community Survey 5-Year Estimates

POPULATION
Total Population	2,424 (100%)
Population Density	494 per sq mi
Diversity Index¹	17


INCOME
Median Household Income	$109,882
Per Capita Income	$70,340
Median Home Value	$944,500

HOUSING
Total HU (Housing Units)	2,368 (100%)
Owner Occupied HU	977 (41.3%)
Renter Occupied HU	162 (6.8%)
Vacant Housing Units	1,229 (51.9%)

HOUSEHOLDS
Total Households	1,139
Average Household Size	2.13
Family Households	787 (69.1%)

NOTES

The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).

Dennis, MA - Peer Comparisons by Rank and Percentile

The table below compares Dennis to the other 248 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 173	31st
Population Density	# 223	11th
Median Household Income	# 102	59th
Per Capita Income	# 54	79th
Diversity Index	# 185	26th

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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Dennis, MA Profile: Facts & Data

Dennis, Massachusetts - Basic Facts

Dennis, MA Data & Demographics

POPULATION

INCOME

HOUSING

HOUSEHOLDS

Dennis, MA - Peer Comparisons by Rank and Percentile

Dennis, MA - Most Popular Things to Do

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