Noise Levels in Coryell County, TX | Find Quiet Neighborhoods With Our Sound Map
49 dBA
Average noise across Coryell County
Quiet office
9,513
Residents above the EPA 55 dBA threshold
20% of Coryell County residents
79 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Coryell County 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 9,513 Coryell County residents, or 19.5%, live above that level. By land area, 16.1% of Coryell County is above 55 dBA.
83.9% below 55 dBA
16.1% above 55 dBA
See how noise in Coryell County compares to similar-sized counties.
Noise by Part of Coryell County
Average noise levels for Coryell County residents, grouped by direction from the center of Coryell County. The highest population-weighted average is in the Copperas Cove area (southwestern Coryell County); the lowest is in southeastern Coryell County, where just 0% of residents live in blocks above the EPA's 55 dBA threshold, a fifth of the share in the loudest section.
Copperas Cove
53.6 dBA · Moderate-loud
Quiet office to normal conversation
Fort Hood
50.9 dBA · Moderate
Quiet office
Gatesville
42.8 dBA · Quiet
Quiet suburban street at night
Northwestern Coryell County
38.9 dBA · Quiet
Soft rainfall
Southeastern Coryell County
31.2 dBA · Quiet
Whisper
To the human ear, noise in the Copperas Cove area (southwestern Coryell County) sounds about 372% louder than in southeastern Coryell County, a 22.4 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 Hwy 190 do you need to be?
US Hwy 190 produces an estimated 77 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
77 dBA
City bus interior
165 ft
63 dBA
Busy restaurant
330 ft
55 dBA
Quiet office to normal conversation
660 ft
47 dBA
Quiet office
¼ mile
39 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 7% of Coryell County sits under tree canopy (lighter than most counties) and roughly 31% 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 Coryell County. 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 Coryell County
The bar chart below shows the share of Coryell County residents in each noise band. About 78% of residents live below the EPA's 55 dBA threshold, and roughly 2% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Coryell County Compares
Coryell County sits at the quieter end of the spectrum. Below: how Coryell County's average outdoor noise and share of residents above the EPA threshold compare with Lampasas County, Burnet County, Bell County, and McLennan County.
Average noise level (dBA)
Coryell County's 48.7 dBA pop-weighted average is at the quieter end of the spectrum. Texas as a whole averages 50.8 dBA and the U.S. averages 52.0 dBA. Both are lower than Coryell County because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 19.5% of Coryell County 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, 16.1% of Coryell County's footprint sits above 55 dBA, against a Texas average of 22.8% and a national average of 28.1%.
What This Means if You're Moving to Coryell County
- 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 Hwy 190 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 7% of Coryell County is under tree cover (lighter than most counties), 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.
