New Castle, IN Noise Levels
How loud is New Castle, IN?
At 47.5 dB(A), New Castle, IN 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 New Castle's one representative point, not a promise about every block in it, BTS's map wasn't built to resolve individual streets.
Where New Castle'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 New Castle compares nationally
New Castle ranks 2,163 of 3,622 measured places nationally, 1 being the loudest this dataset covers. About 17,382 people live there, making it the 2,156th largest place in this dataset.
Checking one address in New Castle
Nothing here substitutes for checking one address in New Castle directly, and BTS's own map lets anyone do that at no cost.
New Castle'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.