Noise Levels in Dixwell, New Haven, CT | Find Quiet Neighborhoods With Our Sound Map

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 2,254 Dixwell residents, or 39.6%, live above that level. By land area, 47.4% of Dixwell is above 55 dBA.

See how noise in Dixwell compares to similar-sized neighborhoods.

Noise by Part of Dixwell

Average noise levels for Dixwell residents, grouped by direction from the center of Dixwell. The highest population-weighted average is in southeastern Dixwell; the lowest is in northwestern Dixwell, where just 38% of residents live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in the loudest section.

To the human ear, noise in southeastern Dixwell sounds about 49% louder than in northwestern Dixwell, a 5.8 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.

Airport Noise

Tweed/New Haven (HVN) sits southeast of Dixwell. The U.S. Department of Transportation models aviation noise around this airport from federal traffic data, and the model uses those federal measurements rather than synthetic predictions.

Blocks under the approach and departure paths carry combined road-plus-aviation noise, with some exceeding 55 dBA on the map's Overall layer. Blocks on the opposite side of Dixwell, particularly to the northwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.

How Noise Is Distributed Across Dixwell

The bar chart below shows the share of Dixwell residents in each noise band. About 42% of residents live below the EPA's 55 dBA threshold, and roughly 5% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.

How Dixwell Compares

Dixwell sits at the quieter end of the spectrum. Below: how Dixwell's average outdoor noise and share of residents above the EPA threshold compare with Dwight, Beaver Hills, Hamden Plains, and Annex.

Average noise level (dBA)

Dixwell's 54.1 dBA pop-weighted average is at the quieter end of the spectrum. Connecticut as a whole averages 51.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Dixwell because most of either area is rural land away from major roads.

Share of residents above 55 dBA

About 39.6% of Dixwell 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 Dixwell's footprint sits above 55 dBA, against a Connecticut average of 27.3% and a national average of 28.1%.

What This Means if You're Moving to Dixwell

• 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 25% of Dixwell is under tree cover (heavier than most neighborhoods), and the dominant land cover is medium-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.
• Airport noise is directional. Tweed/New Haven's approach paths concentrate aviation noise to the southeast. Neighborhoods to the northwest of downtown show no measurable contribution from the airport.

Sources & Methodology