Napoleon, ND Noise Levels
How loud is Napoleon, ND?
At 47.5 dB(A), Napoleon, ND falls inside HUD's "Acceptable" noise zone, 65 dB(A) day-night average or below under 24 CFR 51.104, the federal government's own line for building housing with no extra sound attenuation required. Treat this as Napoleon's one representative point, not a promise about every block in it, BTS's map wasn't built to resolve individual streets.
Where Napoleon's noise comes from
BTS models these three sources separately before combining them, so a place can be quiet on two and loud on the third.
How Napoleon compares nationally
Napoleon ranks 3,535 of 3,622 measured places nationally, 1 being the loudest this dataset covers. By population, it ranks 11,530 of the 12,137 places in this dataset, home to about 746 people.
Checking one address in Napoleon
Nothing here substitutes for checking one address in Napoleon directly, and BTS's own map lets anyone do that at no cost.
Napoleon's number isn't a one-off calculation, it comes from the same method covered in the methodology guide. See the why New York City shows up quiet here too for why a real place can show no reading at all.