Noise Levels in Southbridge Town, MA | Find Quiet Neighborhoods With Our Sound Map

52 dBA
Average noise across Southbridge Town
Quiet office to normal conversation
5,205
Residents above the EPA 55 dBA threshold
32% of Southbridge Town residents
72 dBA
Loudest residential point
City bus interior

This map shows modeled outdoor noise across Southbridge Town 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
Southbridge Town, MA Map of Noise Levels in Southbridge Town
Click the map to explore
35 45 55 70 90
Quietest (dBA) Loudest
Colorblind friendly off

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 5,205 Southbridge Town residents, or 31.9%, live above that level. By land area, 34.9% of Southbridge Town is above 55 dBA.

See how noise in Southbridge Town compares to similar-sized cities.

Noise by Part of Southbridge Town

Average noise levels for Southbridge Town residents, grouped by direction from the center of Southbridge Town. Central Southbridge Town carries the highest population-weighted average; Southern Southbridge Town carries the lowest. Just 12% of residents in Southern Southbridge Town live in blocks above the EPA's 55 dBA threshold, a third of the share in Central Southbridge Town.

Central Southbridge Town

55.0 dBA · Moderate-loud
Quiet office to normal conversation

57% of people above 55 dBA

QuietLoud

Eastern Southbridge Town

52.3 dBA · Moderate
Quiet office to normal conversation

28% of people above 55 dBA

QuietLoud

Northern Southbridge Town

54.4 dBA · Moderate-loud
Quiet office to normal conversation

35% of people above 55 dBA

QuietLoud

Southern Southbridge Town

46.4 dBA · Mostly quiet
Quiet office

12% of people above 55 dBA

QuietLoud

Western Southbridge Town

52.2 dBA · Moderate
Quiet office to normal conversation

31% of people above 55 dBA

QuietLoud

Central Southbridge Town sounds about 82% louder than Southern Southbridge Town to the human ear, a 8.6 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 72 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
72 dBA
City bus interior
165 ft
61 dBA
Normal conversation an arm’s length away
330 ft
54 dBA
Quiet office to normal conversation
660 ft
47 dBA
Quiet office
¼ mile
40 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall

Calculated from the model's calibrated attenuation formula. About 46% of Southbridge Town sits under tree canopy (heavier than most cities) and roughly 27% 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.

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How Noise Is Distributed Across Southbridge Town

The bar chart below shows the share of Southbridge Town residents in each noise band. About 68% of residents live below the EPA's 55 dBA threshold, and roughly 4% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.

How Southbridge Town Compares

Southbridge Town sits at the quieter end of the spectrum. Below: how Southbridge Town's average outdoor noise and share of residents above the EPA threshold compare with Webster, Auburn, Charlton, and Dudley.

Average noise level (dBA)

Southbridge Town's 52.3 dBA pop-weighted average is at the quieter end of the spectrum. Massachusetts as a whole averages 54.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Southbridge Town because most of either area is rural land away from major roads.

Share of residents above 55 dBA

About 31.9% of Southbridge Town 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, 34.9% of Southbridge Town'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 Southbridge Town

  • 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 46% of Southbridge Town is under tree cover (heavier than most 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.

Federal datasets used:

FHWA Highway Performance Monitoring System: road geometry, traffic counts, lane configuration
U.S. DoT Bureau of Transportation Statistics National Transportation Noise Map: aviation and rail noise, road calibration ground truth
USGS / MRLC National Land Cover Database: land cover and impervious surface coverage
USDA Forest Service Tree Canopy Cover: vegetation density for sound propagation
U.S. Census Bureau TIGER/Line: block-level geography and population
U.S. EPA Levels Document: 55 dBA outdoor reference level

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.

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