Noise Levels in 78733, TX | Find Quiet Neighborhoods With Our Sound Map
49 dBA
Average noise across 78733
Quiet office
842
Residents above the EPA 55 dBA threshold
11% of 78733 residents
70 dBA
Loudest residential point
Highway traffic 50 ft away
This map shows modeled outdoor noise across 78733 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 842 78733 residents, or 10.9%, live above that level. By land area, 13.3% of 78733 is above 55 dBA.
86.7% below 55 dBA
13.3% above 55 dBA
See how noise in 78733 compares to similar-sized zip codes.
Noise by Part of 78733
Average noise levels for 78733 residents, grouped by direction from the center of 78733. The highest population-weighted average is in northwestern 78733; the lowest is in southern 78733, where just 4% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Northwestern 78733
53.9 dBA · Moderate-loud
Quiet office to normal conversation
Eastern 78733
53.3 dBA · Moderate-loud
Quiet office to normal conversation
Northern 78733
51.8 dBA · Moderate
Quiet office to normal conversation
Western 78733
50.7 dBA · Moderate
Quiet office
Southern 78733
50.5 dBA · Moderate
Quiet office
To the human ear, noise in northwestern 78733 sounds about 27% louder than in southern 78733, a 3.4 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 do you need to be?
produces an estimated 70 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
70 dBA
Highway traffic 50 ft away
165 ft
57 dBA
Normal conversation an arm’s length away
330 ft
49 dBA
Quiet office
660 ft
41 dBA
Quiet suburban street at night
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 35% of 78733 sits under tree canopy (heavier than most zip codes) and roughly 16% 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
Austin-Bergstrom International (AUS) sits southeast of 78733. 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 78733, particularly to the northwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across 78733
The bar chart below shows the share of 78733 residents in each noise band. About 86% 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 78733 Compares
78733 sits at the quieter end of the spectrum. Below: how 78733's average outdoor noise and share of residents above the EPA threshold compare with 78730, 78736, 78751, and 78721.
Average noise level (dBA)
78733's 49.2 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 78733 because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 10.9% of 78733 residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's fewer than any of its peer group. Measured by land area instead, 13.3% of 78733'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 78733
- 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 35% of 78733 is under tree cover (heavier than most zip codes), 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.
- Airport noise is directional. Austin-Bergstrom International's approach paths concentrate aviation noise to the southeast. Neighborhoods to the northwest of downtown show no measurable contribution from the airport.
