Noise Levels in South Bound Brook, NJ | Find Quiet Neighborhoods With Our Sound Map
49 dBA
Average noise across South Bound Brook
Quiet office
610
Residents above the EPA 55 dBA threshold
15% of South Bound Brook residents
81 dBA
Loudest residential point
Food blender at arm’s length
This map shows modeled outdoor noise across South Bound Brook 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 610 South Bound Brook residents, or 14.8%, live above that level. By land area, 17.2% of South Bound Brook is above 55 dBA.
Average noise levels for South Bound Brook residents, grouped by direction from the center of South Bound Brook. Western South Bound Brook carries the highest population-weighted average; Southern South Bound Brook carries the lowest. Just 0% of residents in Southern South Bound Brook live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Western South Bound Brook.
Central South Bound Brook
48.7 dBA · Mostly quiet
Quiet office
14% of people above 55 dBA
QuietLoud
Eastern South Bound Brook
49.0 dBA · Mostly quiet
Quiet office
14% of people above 55 dBA
QuietLoud
Northern South Bound Brook
49.6 dBA · Mostly quiet
Quiet office
3% of people above 55 dBA
QuietLoud
Southern South Bound Brook
38.6 dBA · Quiet
Soft rainfall
0% of people above 55 dBA
QuietLoud
Western South Bound Brook
51.3 dBA · Moderate
Quiet office to normal conversation
25% of people above 55 dBA
QuietLoud
Western South Bound Brook sounds about 141% louder than Southern South Bound Brook to the human ear, a 12.7 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 81 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 quiet suburban street at night.
At source
81 dBA
Food blender at arm’s length
165 ft
67 dBA
Highway traffic 50 ft away
330 ft
59 dBA
Normal conversation an arm’s length away
660 ft
51 dBA
Quiet office
¼ mile
43 dBA
Quiet suburban street at night
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 23% of South Bound Brook sits under tree canopy (about average for cities) and roughly 49% 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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Airport Noise
Newark Liberty International (EWR) sits northeast of South Bound Brook. The U.S. Department of Transportation measures aviation noise around this airport directly, 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 75 dBA on the map's Overall layer. Blocks on the opposite side of South Bound Brook, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across South Bound Brook
The bar chart below shows the share of South Bound Brook residents in each noise band. About 90% 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 South Bound Brook Compares
South Bound Brook sits at the louder end of the spectrum. Below: how South Bound Brook's average outdoor noise and share of residents above the EPA threshold compare with Martinsville, Franklin Center, Finderne, and Neshanic Station.
Average noise level (dBA)
South Bound Brook's 48.9 dBA pop-weighted average is at the louder end of the spectrum. New Jersey as a whole averages 49.8 dBA and the U.S. averages 52.0 dBA. Both are lower than South Bound Brook because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 14.8% of South Bound Brook 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, 17.2% of South Bound Brook's footprint sits above 55 dBA, against a New Jersey average of 25.2% and a national average of 28.1%.
What This Means if You're Moving to South Bound Brook
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 23% of South Bound Brook is under tree cover (about average for cities), 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. Newark Liberty International's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
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.
