The Town FilesDennis, Massachusetts
Town in Barnstable County · population 14,674 (2020 Census)
- Median home
- $627,100
- Household income
- $88,154
- Jan low / Jul high
- 25° / 78°
- Snow a year
- 22 in
- Tornadoes ≤10 mi since 1950
- 5
- Median age
- 59.5
Dennis is a town of 14,674 people in Barnstable County, Massachusetts. The median home is worth $627,100, above the typical Massachusetts town ($510,150). It ranks better for a vacation home than 84% of Massachusetts towns, more seaside character than 82% of Massachusetts towns, better for cycling than 76% of Massachusetts towns.
How Dennis ranks
Percentile among Massachusetts towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Massachusetts towns.
Homes and cost of living
The median home in Dennis is worth $627,100, above the typical Massachusetts town ($510,150). Homes cost about 7.1 times the median household income of $88,154, which is more affordable than 8% of Massachusetts towns. Median rent is $1,420 a month. 78.9% of households own their home.
| Housing | Dennis | Typical Massachusetts town |
|---|---|---|
| Median home value | $627,100 | $510,150 |
| Median rent | $1,420 | $1,561 |
| Median household income | $88,154 | $108,622 |
| Home value ÷ income | 7.1× | 4.5× |
| Homeownership | 78.9% | 80.7% |
| Median year built | 1970 | 1968 |
| Seasonal / vacation homes | 51.5% | — |
Who lives in Dennis
| People | Dennis | Typical Massachusetts town |
|---|---|---|
| Median age | 59.5 | 44.8 |
| Age 65 and over | 39.8% | 20.7% |
| Under 18 | 9.0% | — |
| Bachelor's degree or higher | 44.1% | 45.7% |
| Below the poverty line | 6.7% | 6.3% |
| Veterans | 7.2% | — |
| Born outside the U.S. | 7.5% | — |
| Work from home | 16.9% | 17.7% |
| Average commute | 24.1 min | 30.1 min |
| Homes with broadband | 94.5% | 93.9% |
Weather in Dennis
July highs average 77.6°F and January lows 24.6°F. About 46.3 inches of rain and melted snow fall a year, with 21.5 inches of snow (typical Massachusetts town: 49.5 in). Expect about 1 days a year at 90°F or hotter and 94 nights at or below freezing.
Tornadoes, storms and disasters
5 tornadoes have passed within 10 miles of Dennis since 1950, compared with 8 for the typical Massachusetts town. The strongest, an EF1, struck on July 23, 2019 about 2.6 miles from the town center. The most recent was on September 2, 2021.
Hail of 1 inch or larger has been reported within 10 miles 3 times; the largest was 1.50 inches on July 2, 2009.
Severe weather in Barnstable County since 1996
Barnstable County has been included in 24 federal disaster or emergency declarations since 1953, most often for flood, hurricane, snowstorm.
| Declared | Incident | Declaration |
|---|---|---|
| September 15, 2023 | Hurricane | EM-3599: Hurricane Lee |
| March 27, 2020 | Biological | DR-4496: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3438: Covid-19 |
| June 25, 2018 | Severe Storm | DR-4372: Severe Winter Storm And Flooding |
| April 13, 2015 | Severe Storm | DR-4214: Severe Winter Storm, Snowstorm, And Flooding |
Jobs and pay in Barnstable County
Barnstable County had 96,280 jobs in 2024, paying an average of $64,707 a year. Unemployment was 4.2% in 2023; in Dennis itself the ACS puts it at 4.6%.
Towns near Dennis
- South Dennis, MA0.7 mi · 3,899 people · home $495,700
- East Dennis, MA2.1 mi · 2,585 people · home $694,000
- Yarmouth Port, MA2.9 mi · 5,403 people · home $604,900
- Dennis Port, MA3.0 mi · 3,487 people · home $523,900
- Northwest Harwich, MA3.2 mi · 4,296 people · home $665,100
- South Yarmouth, MA3.3 mi · 11,703 people · home $541,700
- Yarmouth, MA3.8 mi · 25,023 people · home $551,800
- Harwich, MA4.9 mi · 13,440 people · home $658,600
Dennis questions
Is Dennis, Massachusetts a good place to retire?
On The Town Files lifestyle rankings, Dennis scores better for retirees than 66% of Massachusetts towns and quieter than 71%. 39.8% of residents are 65 or older (median age 59.5).
How much does a house cost in Dennis?
The median owner-occupied home in Dennis is valued at $627,100 (Census ACS 2020–2024), against a median household income of $88,154, so homes cost about 7.1 times income. Median rent is $1,420 a month.
What is the weather like in Dennis?
July highs average 77.6°F and January lows 24.6°F (NOAA 1991–2020 normals). It gets about 46.3 inches of precipitation a year and 21.5 inches of snow.
Does Dennis get tornadoes?
5 tornadoes have passed within 10 miles of Dennis since 1950 (NOAA Storm Events); the strongest was an EF1 on July 23, 2019. The typical Massachusetts town has had 8.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)