Dennis, Barnstable County, Massachusetts
Census designated place in Barnstable County, Massachusetts · ZIP 02638
- Barnstable County
- Within Dennis Town
- Census data · ACS 2019-2023
- 1,903 (2019-2023 estimate)Population
- 945Households
- $127,292Median household income
- $835,300Median home value
- 1ZIP codes
About Dennis
This page shows only what has been published about Dennis: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.
Town intelligenceOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 2,798 |
| 2010 | 2,407 |
| 2020 | 2,399 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, place level, state 25, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 25, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 25, retrieved November 14, 2026.
Median household income $127,292 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 25, retrieved November 14, 2026.
- Owner occupied
- 824 units
- Renter occupied
- 121 units
- Vacancy rate
- 60.9%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, place level, state 25, retrieved November 14, 2026.
| Measure | Dennis | Barnstable County | Massachusetts |
|---|---|---|---|
| Population | 1,903 | 230,073 | 6,992,395 |
| Median household income | $127,292 | $94,452 | $101,341 |
| Median age | 63.2 | 55.1 | 40.0 |
| Median home value | $835,300 | $575,900 | $525,800 |
| Bachelor’s degree or higher | 50.3% | 47.4% | 46.6% |
| Foreign-born residents | 6.7% | 9.6% | 17.7% |
| Owner-occupied homes | 87.2% | 80.6% | 62.6% |
| Mean commute to work | 18.4 minutes | 25.4 minutes | 29.3 minutes |
Source: American Community Survey 5-year data profile 2019–2023, place level, state 25, retrieved November 14, 2026.
CommunityRules and moderation
Events in DennisAll events
No upcoming event is listed in Dennis yet. Members and businesses add events from the Events page; each is screened before it shows.
Schools
No public school is listed for Dennis: either the NCES directory for Massachusetts is not loaded yet, or no school's address falls inside Dennis’s boundary. Schools in neighbouring towns are on their pages.
Legislative districts
| Chamber | District |
|---|---|
| U.S. House of Representatives | Congressional District 9 (MA-9) |
| State legislature, lower chamber | 1st Barnstable District |
| State legislature, upper chamber | Cape and Islands District |
Boundaries from the Census Bureau’s TIGER/Line district files, matched to Dennis’s own boundary. Who holds each seat appears on the People page once the official records are approved.
Sources: Census cartographic boundaries 2025: congressional districts, 119th Congress, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, upper chamber, state 25, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, lower chamber, state 25, retrieved November 14, 2026.
Frequently asked about DennisPromoted from questions people asked
No question about Dennis has been asked often enough to publish an answer yet. Ask Dennis and the answer, once a person checks it, appears here.
Nearby towns
- Yarmouth PortCensus designated place
- East DennisCensus designated place
- Dennis TownTown
- South DennisCensus designated place
- Yarmouth TownTown
- South YarmouthCensus designated place
- West DennisCensus designated place
- Dennis PortCensus designated place
- Northwest HarwichCensus designated place
- West YarmouthCensus designated place
Other towns in Barnstable County
- Barnstable TownCity
- Bourne TownTown
- BourneCensus designated place
- Brewster TownTown
- BrewsterCensus designated place
- Buzzards BayCensus designated place
- Chatham TownTown
- ChathamCensus designated place
- Dennis TownTown
- Dennis PortCensus designated place
Other places named Dennis in Massachusetts
- Dennis TownTown