Glenwood, IA Noise Levels
Glenwood, IA: what the federal noise map shows
Glenwood, IA is one of the places where the federal model has nothing to report above its 45 dB(A) floor, on any of the three sources.
That's the reading at Glenwood's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Glenwood ranks
There's no loudness rank for Glenwood: it's one of 8,515 places nationally where BTS's model measures nothing above its 45 dB(A) floor. About 5,250 people live there, making it the 4,739th largest place in this dataset.
Your street may differ from Glenwood's reading
For a single house or lot in Glenwood 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 Glenwood's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Glenwood.