Sheffield, IA Noise Levels
How loud is Sheffield, IA?
None of the three transportation sources BTS models, road, rail or aircraft, register above 45 dB(A) at Sheffield, IA. That figure is sampled at one coordinate, the Census Bureau's own internal point for Sheffield, not a street-by-street survey of the whole place.
How Sheffield compares nationally
There's no loudness rank for Sheffield: it's one of 8,515 places nationally where BTS's model measures nothing above its 45 dB(A) floor. By population, it ranks 9,818 of the 12,137 places in this dataset, home to about 1,123 people.
Checking one address in Sheffield
Nothing here substitutes for checking one address in Sheffield directly, and BTS's own map lets anyone do that at no cost.
Sheffield'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.