Population 3,042 · Census ACS 2020–24
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Population and households in Dennis
Household size in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 2.12 | 2.53 | 2.68 |
| 2010–14 | 2.21 | 2.57 | 2.73 |
| 2015–19 | 2.01 | 2.57 | 2.71 |
| 2020–24 | 2.27 | 2.52 | 2.65 |
| Change | +0.15 | −0.01 | −0.03 |
Dennis is a place of small households, averaging 2.27 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has climbed from 2.12, but in a place this small, much of that may be survey noise rather than real change.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 58.6 | 39.4 | 37.7 |
| 2010–14 | 60.8 | 40.1 | 38.6 |
| 2015–19 | 65.2 | 41.0 | 39.6 |
| 2020–24 | 60.3 | 41.4 | 40.1 |
| Change | +1.8 | +2.0 | +2.3 |
With a median age of 60.3, Dennis is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 3.8% | 11.0% | 12.3% |
| 2010–14 | 3.4% | 11.0% | 12.3% |
| 2015–19 | 4.7% | 10.3% | 11.6% |
| 2020–24 | 1.7% | 10.6% | 11.6% |
| Change | −2.1 pts | −0.4 pts | −0.6 pts |
Single parents head only 1.7% of households in Dennis, well below the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Dennis
Renters in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 11.6% | 36.0% | 33.3% |
| 2010–14 | 10.0% | 37.7% | 35.6% |
| 2015–19 | 17.0% | 37.6% | 36.0% |
| 2020–24 | 12.5% | 37.5% | 34.8% |
| Change | +0.9 pts | +1.5 pts | +1.5 pts |
Dennis is overwhelmingly a place of homeowners: only 12.5% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Just over half of owners (53.4%) have paid off their mortgages, well above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 43.3% | 9.5% | 11.4% |
| 2010–14 | 46.1% | 9.1% | 11.4% |
| 2015–19 | 48.3% | 8.9% | 11.1% |
| 2020–24 | 45.8% | 7.9% | 9.6% |
| Change | +2.5 pts | −1.6 pts | −1.8 pts |
Vacancy is high in Dennis: 45.8% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 1974 | 1958 | 1974 |
| 2010–14 | 1974 | 1959 | 1975 |
| 2015–19 | 1974 | 1961 | 1977 |
| 2020–24 | 1976 | 1963 | 1980 |
| Change | +2 | +5 | +6 |
The typical home in Dennis was built around 1976, about the same vintage as the country's housing overall (1980). Homes here are newer than in Massachusetts as a whole, where the median home dates to 1963.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | $968 | $1,085 | $965 |
| 2010–14 | $1,147 | $1,157 | $1,040 |
| 2015–19 | $1,601 | $1,398 | $1,213 |
| 2020–24 | $1,165 | $1,860 | $1,571 |
| Change | +$197 | +$775 | +$606 |
Rent in Dennis runs $1,165 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 24.2% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Dennis
Bachelor's degrees in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 47.3% | 38.5% | 28.4% |
| 2010–14 | 47.6% | 40.1% | 29.6% |
| 2015–19 | 52.4% | 43.6% | 32.1% |
| 2020–24 | 49.0% | 47.2% | 35.6% |
| Change | +1.7 pts | +8.7 pts | +7.2 pts |
College graduates are unusually common in Dennis: 49.0% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby. The picture is much the same across Massachusetts.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 97.3% | 88.4% | 84.9% |
| 2010–14 | 98.0% | 89.3% | 86.1% |
| 2015–19 | 94.6% | 90.5% | 87.7% |
| 2020–24 | 98.6% | 91.0% | 89.3% |
| Change | +1.4 pts | +2.6 pts | +4.3 pts |
Finishing high school is nearly universal in Dennis: 98.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Dennis
| Period | Dennis | Massachusetts | U.S. |
|---|---|---|---|
| 2006–10 | 11.9% | 7.5% | 8.1% |
| 2010–14 | 7.7% | 8.7% | 9.4% |
| 2015–19 | 5.8% | 5.0% | 5.6% |
| 2020–24 | 2.2% | 5.2% | 5.4% |
| Change | −9.7 pts | −2.3 pts | −2.7 pts |
The job market in Dennis has been strong: just 2.2% of the labor force was out of work and looking, well below the national rate of 5.4%. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Dennis compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Dennis | 2.27 | 60.3 | 1.7% | 12.5% | 45.8% | 1976 | $1,165 | 49.0% | 98.6% | 2.2% |
| East Dennis | 2.03 | 65.6 | 6.2% | 15.1% | 39.6% | 1975 | $875 | 55.8% | 99.1% | 3.6% |
| South Dennis | 2.02 | 57.0 | 8.3% | 18.6% | 41.5% | 1973 | $1,773 | 41.9% | 97.2% | 2.1% |
| Yarmouth Port | 2.16 | 57.7 | 6.7% | 8.2% | 18.3% | 1980 | $1,993 | 53.8% | 97.0% | 3.2% |
| South Yarmouth | 2.07 | 55.9 | 8.2% | 21.8% | 31.3% | 1970 | $1,783 | 38.5% | 95.1% | 7.6% |
| West Dennis | 2.04 | 61.1 | 7.7% | 27.4% | 49.4% | 1965 | $1,760 | 42.9% | 95.0% | 1.0% |
| Northwest Harwich | 2.34 | 55.7 | 9.4% | 8.0% | 28.0% | 1980 | $2,926 | 47.1% | 97.7% | 7.4% |
| Dennis Port | 1.92 | 53.9 | 5.4% | 29.4% | 49.8% | 1966 | $1,439 | 41.8% | 97.1% | 10.0% |
| West Yarmouth | 2.14 | 52.6 | 9.2% | 20.7% | 29.5% | 1974 | $1,541 | 33.4% | 92.7% | 5.5% |
| Barnstable | 2.53 | 52.2 | 4.1% | 9.9% | 27.2% | 1970 | $2,425 | 62.1% | 94.5% | 1.0% |
| Brewster | 2.20 | 58.2 | 4.2% | 14.8% | 44.6% | 1982 | $1,565 | 61.2% | 97.7% | 8.2% |
All figures 2020–24.
Cities with similar populations: Owensville, IN · Rison, AR · Madison, NE · Marceline, MO · Allenton, MI · Pentwater, MI · Pierson, MI · Quartzsite, AZ · Reading, MI · Mount Pleasant Mills, PA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Dennis. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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