Port Royal, PA Noise Levels
How loud is Port Royal, PA?
At 47.5 dB(A), Port Royal, PA 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. The main source is rail traffic, well ahead of the other two modes BTS tracks. Port Royal's reading comes from a single sampled point, not a block-by-block sweep, so a specific address here could genuinely differ.
Where Port Royal'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.
If you're weighing a move to Port Royal
The same window and door upgrades that work on road noise also cut broadband rail noise, though very low-frequency freight rumble travels through walls, not just glass.
How Port Royal compares nationally
Port Royal ranks 3,501 of 3,622 measured places nationally, 1 being the loudest this dataset covers. About 796 people live there, making it the 11,255th largest place in this dataset.
Checking one address in Port Royal
Nothing here substitutes for checking one address in Port Royal directly, and BTS's own map lets anyone do that at no cost.
Port Royal's number isn't a one-off calculation, it comes from the same method covered in the methodology guide. The guide to what actually cuts each kind of noise explains why rail traffic calls for a different fix than the other two sources.