Sonoma, CA Noise Levels
Sonoma, CA: what the federal noise map shows
At Sonoma, CA, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. That figure is sampled at one coordinate, the Census Bureau's own internal point for Sonoma, not a street-by-street survey of the whole place.
Where Sonoma ranks
Sonoma, CA sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. About 10,606 people live there, making it the 3,068th largest place in this dataset.
Your street may differ from Sonoma's reading
For a single house or lot in Sonoma rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Sonoma's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Sonoma.