South Dennis, Massachusetts Population 2020

3,684

South Dennis is a city located in Massachusetts. South Dennis has a 2020 population of 3,684. South Dennis is currently declining at a rate of 0.00% annually and its population has increased by 1.13% since the most recent census, which recorded a population of 3,643 in 2010. South Dennis reached it's highest population of 3,684 in 2018.

The average household income in South Dennis is $68,844 with a poverty rate of 12.49%. The median rental costs in recent years comes to $1,226 per month, and the median house value is $288,800. The median age in South Dennis is 52.6 years, 50.7 years for males, and 54.8 years for females. For every 100 females there are 82.6 males.

South Dennis Demographics

According to the most recent ACS, the racial composition of South Dennis was:

  • White: 90.07%
  • Black or African American: 6.43%
  • Asian: 1.87%
  • Two or more races: 1.63%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of South Dennis, Massachusetts is 3,684, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 3,684.The last official US Census in 2010 recorded the population at 3,643.

South Dennis, Massachusetts Population 2020

Population by Race

Race Population Percentage
White3,31890.07%
Black or African American2376.43%
Asian691.87%
Two or More Races601.63%

South Dennis Population Pyramid 2020

South Dennis Median Age

52.6


Total

50.7


Male

54.8


Female

South Dennis Adults

There are 3,123 adults, (1,127 of whom are seniors) in South Dennis.

South Dennis Age Dependency

84.6

Age Dependency Ratio

56.5

Old Age Dependency Ratio

28.1

Child Dependency Ratio

South Dennis Sex Ratio

Female

2,017

54.75%

Male

1,667

45.25%

South Dennis Households and Families

South Dennis Renter vs Owner Occupied by Household Type

South Dennis Household Types

Type Owner Renter
Married87.6%12.4%
All78.3%21.7%
Non Family77.5%22.5%
Female77.1%22.9%
Male35.8%64.2%

78.3%

Rate of Home Ownership

Type Count Average Size Owned
All1,6732.1478.3
Married6922.7487.6
Non Family6771.2177.5
Female1702.4477.1
Male1343.3735.8

2.72

Average Family Size

2.14

Average Household Size

5.2%

Unmarried (Opposite Sex)

1.2%

Unmarried (Same Sex)

South Dennis Education

Education Attained Count Percentage
Less Than 9th Grade80.27%
9th to 12th Grade1194.08%
High School Graduate1,02635.19%
Some College65822.57%
Associates Degree2157.37%
Bachelors Degree60720.82%
Graduate Degree2839.71%

South Dennis Educational Attainment by Race

Name Total High School Bachelors
White2,8072,690853
Black545412
Asian473725
Multiple Races88

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 53.19%.

Name Average Male Female
Overall$35,260$35,990$34,295
Less Than High School$32,639$57,981$
High School Grad$27,788$37,202$25,119
Some College$40,324$32,500$42,938
Bachelors Degree$34,432$34,511$34,250
Graduate Degree$44,583$81,250$43,542

$35,260

Average Earnings

$35,990

Average Male

$34,295

Average Female

South Dennis Language

South Dennis Language by Age

South Dennis Language

89.61% of South Dennis residents speak only English, while 10.39% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 8.17% of the population.

South Dennis Poverty

South Dennis Poverty by Race

Name Total In Poverty Poverty Rate
White3,1992517.85%
Black23419482.91%

12.49%

Overall Poverty Rate

10.02%

Male Poverty Rate

14.59%

Female Poverty Rate

Poverty in South Dennis

The race most likely to be in poverty in South Dennis is Black, with 82.91% below the poverty level.

The race least likely to be in poverty in South Dennis is White, with 7.85% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 14.81%, and for those that did not work, the poverty rate was 17.15%.

Name Poverty
Some College10.09%
High School10.05%
Bachelors or Greater7.13%
Less Than High School0.00%
Name Poverty
Male Unemployed50.00%
Female Unemployed26.09%
Male Employed4.75%
Female Employed2.73%

South Dennis Income

South Dennis Income by Household Type

Name Median Mean
Households$53,891$68,844
Families$76,085$86,513
Married Families$91,250-
Non Families$34,276$41,892

South Dennis Marital Status

South Dennis Marital Status

Marriage Rates

49.4%

Overall Marriage Rate

52.4%

Male Marriage Rate

47.0%

Female Marriage Rate

South Dennis Married by Age and Sex

South Dennis Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

South Dennis Marital Status by Race

South Dennis Veterans

308

Number of Veterans

285

Male Veterans

23

Female Veterans

War Veterans
Vietnam109
World War II47
Korea44
Second Gulf War10
First Gulf War
Age Group Veterans
75+136
65 to 74109
35 to 5448
55 to 6415
18 to 34

$South Dennis Veterans by Education

2.69%

Veteran Poverty Rate

49.49%

Veteran Disability Rate

South Dennis Employment Status

61.5%

Labor Force Participation

56.4%

Employment Rate

7.7%

Unemployment Rate

South Dennis Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

67.54%

Born in Massachusetts

90.88%

Native Born

9.12%

Foreign Born

2.01%

Non Citizen

Place of Birth

90.88% of South Dennis residents were born in the United States, with 67.54% having been born in Massachusetts. 2.01% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Year Population Growth Annual Growth Rate
20203,6840.00%
20193,6840.00%
20183,684491.35%
20173,635531.48%
20163,5821544.49%
20153,428-171-4.75%
20143,5992417.18%
20133,358-12-0.36%
20123,370-116-3.33%
20113,486-157-4.31%
20103,6430.00%