Noise Levels in 98439, WA | Find Quiet Neighborhoods With Our Sound Map
48 dBA
Average noise across 98439
Quiet office
447
Residents above the EPA 55 dBA threshold
10% of 98439 residents
80 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across 98439 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
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
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 447 98439 residents, or 10.2%, live above that level. By land area, 18.4% of 98439 is above 55 dBA.
Average noise levels for 98439 residents, grouped by direction from the center of 98439. Northern 98439 carries the highest population-weighted average; Southern 98439 carries the lowest. Just 0% of residents in Southern 98439 live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Northern 98439.
Central 98439
47.7 dBA · Mostly quiet
Quiet office
9% of people above 55 dBA
QuietLoud
Eastern 98439
48.0 dBA · Mostly quiet
Quiet office
5% of people above 55 dBA
QuietLoud
Northern 98439
55.0 dBA · Moderate-loud
Quiet office to normal conversation
30% of people above 55 dBA
QuietLoud
Southern 98439
41.9 dBA · Quiet
Quiet suburban street at night
0% of people above 55 dBA
QuietLoud
Western 98439
53.2 dBA · Moderate-loud
Quiet office to normal conversation
18% of people above 55 dBA
QuietLoud
Northern 98439 sounds about 148% louder than Southern 98439 to the human ear, a 13.1 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 I-5 do you need to be?
I-5 produces an estimated 78 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 quiet suburban street at night.
At source
78 dBA
City bus interior
165 ft
65 dBA
Busy restaurant
330 ft
58 dBA
Normal conversation an arm’s length away
660 ft
51 dBA
Quiet office
¼ mile
44 dBA
Quiet suburban street at night
½ mile
36 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 14% of 98439 sits under tree canopy (lighter than most zip codes) and roughly 44% 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.
-->
Airport Noise
Seattle-Tacoma International (SEA) sits northeast of 98439. 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 98439, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across 98439
The bar chart below shows the share of 98439 residents in each noise band. About 90% of residents live below the EPA's 55 dBA threshold, and roughly 4% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How 98439 Compares
98439 sits at the quieter end of the spectrum. Below: how 98439's average outdoor noise and share of residents above the EPA threshold compare with 98333, 98388, 98443, and 98349.
Average noise level (dBA)
98439's 47.8 dBA pop-weighted average is at the quieter end of the spectrum. Washington as a whole averages 51.3 dBA and the U.S. averages 52.0 dBA. Both are lower than 98439 because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 10.2% of 98439 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, 18.4% of 98439's footprint sits above 55 dBA, against a Washington average of 27.7% and a national average of 28.1%.
What This Means if You're Moving to 98439
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 I-5 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 14% of 98439 is under tree cover (lighter than most zip codes), and the dominant land cover is medium-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. Seattle-Tacoma International's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
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.
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.
