Noise Levels in Dennis Port, MA | Find Quiet Neighborhoods With Our Sound Map
54 dBA
Average noise across Dennis Port
Quiet office to normal conversation
1,206
Residents above the EPA 55 dBA threshold
41% of Dennis Port residents
65 dBA
Loudest residential point
Busy restaurant
This map shows modeled outdoor noise across Dennis Port at 100-meter resolution, combining road, aviation, and rail sources. Green areas measure below 45 dBA. Orange and red exceed the EPA's 55 dBA outdoor threshold linked to long-term health effects. Use the layer toggles to view each source on its own or all together.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
What the numbers sound like
30 dBAWhisper
40 dBASoft rainfall
45 dBAQuiet suburban street at night
50 dBAQuiet office
55 dBAEPA outdoor threshold: light traffic 100 ft away
60 dBANormal conversation an arm's length away
65 dBABusy restaurant
70 dBAHighway traffic 50 ft away
80 dBACity bus interior
Population Above the EPA Outdoor Threshold
The EPA's 55 dBA outdoor reference level is a common benchmark for residential noise exposure, especially for activity interference, annoyance, and long-term community noise concerns. About 1,206 Dennis Port residents, or 40.6%, live above that level. By land area, 47.4% of Dennis Port is above 55 dBA.
Average noise levels for Dennis Port residents, grouped by direction from the center of Dennis Port. Eastern Dennis Port carries the highest population-weighted average; Northern Dennis Port carries the lowest. Just 32% of residents in Northern Dennis Port live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in Eastern Dennis Port.
Central Dennis Port
54.8 dBA · Moderate-loud
Quiet office to normal conversation
37% of people above 55 dBA
QuietLoud
Eastern Dennis Port
54.9 dBA · Moderate-loud
Quiet office to normal conversation
42% of people above 55 dBA
QuietLoud
Northern Dennis Port
52.9 dBA · Moderate
Quiet office to normal conversation
32% of people above 55 dBA
QuietLoud
Southern Dennis Port
53.7 dBA · Moderate-loud
Quiet office to normal conversation
44% of people above 55 dBA
QuietLoud
Western Dennis Port
54.6 dBA · Moderate-loud
Quiet office to normal conversation
56% of people above 55 dBA
QuietLoud
Eastern Dennis Port sounds about 15% louder than Northern Dennis Port to the human ear, a 2.0 dBA gap. Every 10 dBA roughly doubles perceived loudness. Within any of these directions, two homes a quarter mile apart can still differ by 10 or more dBA depending on how close they sit to a major highway.
How far back from do you need to be?
produces an estimated 65 dBA at its loudest centerline points. Noise drops logarithmically with distance, with the exact rate depending on what's between you and the road. Tree cover, walls, terrain, and pavement type all matter. At roughly a quarter mile back, traffic fades into the noise level of a soft rainfall.
At source
65 dBA
Busy restaurant
165 ft
51 dBA
Quiet office to normal conversation
330 ft
43 dBA
Quiet suburban street at night
660 ft
35 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 27% of Dennis Port sits under tree canopy (about average for cities) and roughly 35% is impervious surface like pavement and rooftops. Both are folded into the per-place decay rate above. Heavier canopy pulls noise down faster with distance; impervious surfaces slow the drop.
-->
How Noise Is Distributed Across Dennis Port
The bar chart below shows the share of Dennis Port residents in each noise band. About 63% of residents live below the EPA's 55 dBA threshold, and roughly 1% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Dennis Port Compares
Dennis Port sits at the louder end of the spectrum. Below: how Dennis Port's average outdoor noise and share of residents above the EPA threshold compare with Harwich, South Dennis, Dennis, and Northwest Harwich.
Average noise level (dBA)
Dennis Port's 54.0 dBA pop-weighted average is at the louder end of the spectrum. Massachusetts as a whole averages 54.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Dennis Port because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 40.6% of Dennis Port residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's in the middle of its peer group. Measured by land area instead, 47.4% of Dennis Port's footprint sits above 55 dBA, against a Massachusetts average of 40.0% and a national average of 28.1%.
What This Means if You're Moving to Dennis Port
Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
Tree canopy can help reduce modeled noise exposure. Roughly 27% of Dennis Port is under tree cover (about average for cities), and the dominant land cover is low-intensity developed land. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
