South Dennis, MA
Population 3,190 · Massachusetts
About South Dennis, MA
South Dennis is a small community in Massachusetts with a population of 3,190 residents. The median household income is $86,500 per year, which is above the national average. The median age in South Dennis is 55.2 years.
Housing in South Dennis has a median home value of $454,400 and median monthly rent of $1,542. Of the 2,619 total housing units, the majority are owner-occupied, with 1,258 owner-occupied and 298 renter-occupied units.
The unemployment rate in South Dennis is 3.4% and the poverty rate is 4.5%. 37.1% of residents hold a bachelor's degree or higher. The average commute time is 22.9 minutes.
Cost of Living in South Dennis, MA
Compared to national averages, South Dennis has a median household income of $86,500 (15% above the national median of $75,149). Home values average $454,400, which is 86% above the national median. Monthly rent at $1,542 is 33% above the US average of $1,163. Within Massachusetts, South Dennis's income is 18% below the state average of $105,630, and home values are 19% below the state median of $561,296.
Why Live in South Dennis, MA?
South Dennis offers a strong local economy with a median household income of $86,500, well above the national average, and a strong job market with an unemployment rate of just 3.4%, and a well-educated community where 37.1% of residents hold a bachelor’s degree or higher. Additionally, the city features a low poverty rate of 4.5%, better than the national average, and short commute times averaging just 22.9 minutes.
Potential considerations include a competitive housing market where the typical home costs $454,400. However, South Dennis’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
South Dennis has a population of 3,190 with a median age of 55.2 years. Compare South Dennis with other cities to see how it stacks up, or explore all cities in Massachusetts.
Similar Cities Near South Dennis
Cities in Massachusetts with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Hopkinton | 3,142 | $173,750 | $601,900 | Compare |
| South Duxbury | 3,272 | $206,111 | $987,500 | Compare |
| Ocean Grove | 3,099 | $97,109 | $337,800 | Compare |
| Cordaville | 3,076 | $161,023 | $730,600 | Compare |
| Monument Beach | 3,067 | $86,953 | $540,600 | Compare |
| Nahant | 3,328 | $111,004 | $686,000 | Compare |
| Ayer | 3,012 | $81,286 | $417,300 | Compare |
| Upton | 2,985 | $109,925 | $474,600 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Massachusetts
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about South Dennis
What is the population of South Dennis, MA?
The population of South Dennis, MA is 3,190 according to the latest Census data.
What is the median household income in South Dennis?
The median household income in South Dennis, MA is $86,500 per year.
What is the median home value in South Dennis?
The median home value in South Dennis, MA is $454,400.
What is the average rent in South Dennis?
The median monthly rent in South Dennis, MA is $1,542.
What is the unemployment rate in South Dennis?
The unemployment rate in South Dennis, MA is 3.4%.