Sioux City, IA Noise Levels
Noise levels in Sioux City, IA
At 52.5 dB(A), Sioux City, IA 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. That's the reading at Sioux City's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Sioux City'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 Sioux City
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 Sioux City compares nationally
Sioux City ranks 823 of 3,622 measured places nationally, 1 being the loudest this dataset covers. About 86,875 people live there, making it the 416th largest place in this dataset.
Checking one address in Sioux City
Sioux City's figure above is a town-wide reading. For one exact address, BTS's own map is the free, authoritative source.
Where Sioux City's figures come from
Every dB(A) figure on this page traces to a named BTS dataset, documented 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.