Noise Levels in North Topsail Beach, NC | Find Quiet Neighborhoods With Our Sound Map

49 dBA

Average noise across North Topsail Beach

Quiet office

108

Residents above the EPA 55 dBA threshold

12% of North Topsail Beach residents

64 dBA

Loudest residential point

Busy restaurant

This map shows modeled outdoor noise across North Topsail Beach 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

North Topsail Beach, NC Map of Noise Levels in North Topsail Beach

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 108 North Topsail Beach residents, or 11.5%, live above that level. By land area, 11.0% of North Topsail Beach is above 55 dBA.

89.0% below 55 dBA

11.0% above 55 dBA

See how noise in North Topsail Beach compares to similar-sized cities.

Eastern North Topsail Beach sounds about 0% louder than Western North Topsail Beach to the human ear, a 0.0 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 Noise Is Distributed Across North Topsail Beach

The bar chart below shows the share of North Topsail Beach residents in each noise band. About 98% 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 North Topsail Beach Compares

North Topsail Beach sits the highest among the peer group. Below: how North Topsail Beach's average outdoor noise and share of residents above the EPA threshold compare with Folkstone, Thomas Landing, Pala Alto, and Stag Park.

Average noise level (dBA)

North Topsail Beach's 48.8 dBA pop-weighted average is the highest among the peer group. North Carolina as a whole averages 49.7 dBA and the U.S. averages 52.0 dBA. Both are lower than North Topsail Beach because most of either area is rural land away from major roads.

Share of residents above 55 dBA

About 11.5% of North Topsail Beach residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's more than any of its peer group. Measured by land area instead, 11.0% of North Topsail Beach's footprint sits above 55 dBA, against a North Carolina average of 22.6% and a national average of 28.1%.

What This Means if You're Moving to North Topsail Beach

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 Nc-210 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 15% of North Topsail Beach is under tree cover (lighter than most cities), and the dominant land cover is herbaceous wetlands. 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.