Sheldon, IA Noise Levels
Sheldon, IA: what the federal noise map shows
At Sheldon, IA, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. That's the reading at Sheldon's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Sheldon ranks
Sheldon is one of 8,515 places in this dataset with no measurable transportation noise at all, too quiet to rank on loudness. About 5,584 people live there, making it the 4,589th largest place in this dataset.
Your street may differ from Sheldon's reading
For a single house or lot in Sheldon 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 Sheldon's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Sheldon.