South Dennis, MA Profile: Facts, Map & Data


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South Dennis, Massachusetts - Basic Facts

The South Dennis Census Designated Place had a population of 3,772 as of July 1, 2017.

The primary coordinate point for South Dennis is located at latitude 41.7041 and longitude -70.1507 in Barnstable County. The formal boundaries for the South Dennis Census Designated Place (see map below) encompass a land area of 4.55 sq. miles and a water area of 0.2 sq. miles. Barnstable County is in the Eastern time zone (GMT -5). The elevation is 33 feet.

The South Dennis Census Designated Place (GNIS ID: 2378230) 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 South Dennis Census Designated Place is located within Town of Dennis, a minor civil division (MCD) of Barnstable County.

Beneath the boundary map are tables with South Dennis population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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South Dennis Census Designated Place, MA Boundary Map

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South Dennis, MA Data & Demographics (As of July 1, 2017)


Total Population 3,772
Daytime Population: Workers 2,093
Daytime Population: Residents 1,822
Total Daytime Population (TDP) 3,915
Ratio TDP/Total Population1 1.04
Population in Households 3,661
Population in Familes 2,824
Population in Group Qrtrs 111
Population Density2 829
Diversity Index3 22


Median Household Income $52,527
Average Household Income $65,638
Per Capita Income $29,692


Total Housing Units 2,840 (100%)
Owner Occupied HU 1,294 (45.6%)
Renter Occupied HU 393 (13.8%)
Vacant Housing Units 1,154 (40.6%)
Median Home Value $325,507
Average Home Value $390,707


Total Households 1,686
Average Household Size 2.17
Family Households 1,042
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.48% 0.42%
Households 0.5% 0.41%
Families 0.5% 0.36%
Median Household Income   1.16%
Per Capita Income   2.57%

South Dennis, MA - Peer Comparisons by Rank and Percentile

The table below compares South Dennis to the other 246 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using July 1, 2017 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 # 142 43rd
Population Density # 183 26th
Diversity Index # 131 48th
Median Household Income # 197 20th
Per Capita Income # 194 22nd

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

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