Northfield, MN Noise Levels
How loud is Northfield, MN?
At 52.5 dB(A), Northfield, MN 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 road traffic, well ahead of the other two modes BTS tracks. Northfield's reading comes from a single sampled point, not a block-by-block sweep, so a specific address here could genuinely differ.
Where Northfield'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 Northfield
Upgraded windows, door seals and STC-rated glazing meaningfully cut broadband, near-continuous road noise.
How Northfield compares nationally
Northfield ranks 953 of 3,622 measured places nationally, 1 being the loudest this dataset covers. By population, it ranks 1,825 of the 12,137 places in this dataset, home to about 21,316 people.
Checking one address in Northfield
Nothing here substitutes for checking one address in Northfield directly, and BTS's own map lets anyone do that at no cost.
Northfield'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 road traffic calls for a different fix than the other two sources.