Rapid City, SD Noise Levels
Rapid City, SD: what the federal noise map shows
At Rapid City, SD, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. Treat this as Rapid City's one representative point, not a promise about every block in it, BTS's map wasn't built to resolve individual streets.
Where Rapid City ranks
Rapid City, SD sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. By population, it ranks 467 of the 12,137 places in this dataset, home to about 79,894 people.
Your street may differ from Rapid City's reading
For a single house or lot in Rapid City 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 Rapid City's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Rapid City.