Smithfield, NC Noise Levels
How loud is Smithfield, NC?
None of the three transportation sources BTS models, road, rail or aircraft, register above 45 dB(A) at Smithfield, NC. That figure is sampled at one coordinate, the Census Bureau's own internal point for Smithfield, not a street-by-street survey of the whole place.
How Smithfield compares nationally
Smithfield, NC sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. By population, it ranks 2,682 of the 12,137 places in this dataset, home to about 12,806 people.
Checking one address in Smithfield
Nothing here substitutes for checking one address in Smithfield directly, and BTS's own map lets anyone do that at no cost.
Smithfield'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.