Noise Levels in Mount Pleasant, FL | Find Quiet Neighborhoods With Our Sound Map
45 dBA
Average noise across Mount Pleasant
Quiet suburban street at night
19
Residents above the EPA 55 dBA threshold
2% of Mount Pleasant residents
77 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Mount Pleasant 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 19 Mount Pleasant residents, or 1.8%, live above that level. By land area, 1.4% of Mount Pleasant is above 55 dBA.
98.6% below 55 dBA
1.4% above 55 dBA
See how noise in Mount Pleasant compares to similar-sized cities.
Noise by Part of Mount Pleasant
Average noise levels for Mount Pleasant residents, grouped by direction from the center of Mount Pleasant. Northern Mount Pleasant carries the highest population-weighted average; Southern Mount Pleasant carries the lowest. Just 0% of residents in Southern Mount Pleasant live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Northern Mount Pleasant.
Central Mount Pleasant
45.5 dBA · Mostly quiet
Quiet suburban street at night
Eastern Mount Pleasant
44.6 dBA · Quiet
Quiet suburban street at night
Northern Mount Pleasant
47.6 dBA · Mostly quiet
Quiet office
Southern Mount Pleasant
42.6 dBA · Quiet
Quiet suburban street at night
Western Mount Pleasant
45.3 dBA · Mostly quiet
Quiet suburban street at night
Northern Mount Pleasant sounds about 41% louder than Southern Mount Pleasant to the human ear, a 5.0 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 US-90 do you need to be?
US-90 produces an estimated 57 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
57 dBA
Normal conversation an arm’s length away
165 ft
45 dBA
Quiet suburban street at night
330 ft
38 dBA
Soft rainfall
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 43% of Mount Pleasant sits under tree canopy (heavier than most cities) and roughly 1% 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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Rail Noise
Active freight rail runs through parts of Mount Pleasant. For most blocks the rail-only contribution is small. Combined road-plus-rail noise rarely exceeds road noise on its own. The exceptions are the handful of blocks within roughly a quarter mile of the right-of-way during pass-through hours.
Use the Rail toggle on the map above to isolate rail's contribution from road and aviation.
How Noise Is Distributed Across Mount Pleasant
The bar chart below shows the share of Mount Pleasant residents in each noise band. About 100% of residents live below the EPA's 55 dBA threshold, and roughly 0% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Mount Pleasant Compares
Mount Pleasant sits at the quieter end of the spectrum. Below: how Mount Pleasant's average outdoor noise and share of residents above the EPA threshold compare with Douglas City, Greensboro, Gretna, and Sycamore.
Average noise level (dBA)
Mount Pleasant's 45.0 dBA pop-weighted average is at the quieter end of the spectrum. Florida as a whole averages 51.6 dBA and the U.S. averages 52.0 dBA. Both are lower than Mount Pleasant because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 1.8% of Mount Pleasant 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, 1.4% of Mount Pleasant's footprint sits above 55 dBA, against a Florida average of 31.8% and a national average of 28.1%.
What This Means if You're Moving to Mount Pleasant
- 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 US-90 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 43% of Mount Pleasant is under tree cover (heavier than most cities), and the dominant land cover is evergreen forest. 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.
