Norridge, IL Noise Levels
Is Norridge, IL noisy?
Norridge, IL's 60-69.9 dB(A) band spans one of HUD's zone boundaries, so the honest answer is a range: somewhere between "Acceptable" (65 dB(A) or below) and "Normally Unacceptable" (65-75 dB(A)), not one clean verdict. Aircraft drives that number here, not the other two sources. That figure is sampled at one coordinate, the Census Bureau's own internal point for Norridge, not a street-by-street survey of the whole place.
Norridge's noise, by source
Each of the three transportation modes gets its own model from BTS; the combined figure above is what they add up to.
What this means for a house here
Depending on where in that band the true value sits, it may also clear FHWA's 66 dB(A) residential impact threshold (23 CFR 772, Table 1), the trigger highway agencies use for sound-wall decisions. Aircraft noise is intermittent and lower-frequency, which is why FAA’s Part 150 program funds whole-envelope sound insulation for homes inside an airport’s own mapped noise contour rather than relying on window replacement alone.
Where Norridge ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Norridge ranks 140, loudest first. Population is about 14,817, 2,414th largest of the 12,137 places covered here.
Your street may differ from Norridge's reading
This page describes Norridge as a whole. If one specific address is what matters, BTS publishes the same underlying map for free.
Behind Norridge's reading
The methodology guide shows exactly how Norridge's reading was built from BTS's tile data. Since aircraft is what's driving this reading, the guide to what actually cuts each kind of noise covers the fix that fits.