Naperville, IL Noise Levels
Naperville, IL: what the federal noise map shows
Naperville, IL 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 Naperville's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Naperville ranks
Naperville is one of 8,515 places in this dataset with no measurable transportation noise at all, too quiet to rank on loudness. By population, it ranks 180 of the 12,137 places in this dataset, home to about 153,124 people.
Your street may differ from Naperville's reading
For a single house or lot in Naperville 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 Naperville's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Naperville.