This map shows modeled outdoor noise across 19492 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.
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 237 19492 residents, or 25.2%, live above that level. By land area, 14.4% of 19492 is above 55 dBA.
See how noise in 19492 compares to similar-sized zip codes.
Noise by Part of 19492
Average noise levels for 19492 residents, grouped by direction from the center of 19492. Western 19492 carries the highest population-weighted average; Southern 19492 carries the lowest. Just 12% of residents in Southern 19492 live in blocks above the EPA's 55 dBA threshold, about half the share in Western 19492.
Central 19492
14% of people above 55 dBA
Eastern 19492
7% of people above 55 dBA
Southern 19492
12% of people above 55 dBA
Western 19492
31% of people above 55 dBA
Western 19492 sounds about 58% louder than Southern 19492 to the human ear, a 6.6 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 Big Rd do you need to be?
Big Rd produces an estimated 63 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.
Calculated from the model's calibrated attenuation formula. About 10% of 19492 sits under tree canopy (lighter than most zip codes) and roughly 46% 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.