About 51431 - Arthur, Iowa
51431 is a mid-sized ZIP code covering Arthur in Iowa, the United States. This area falls under Arthur County.
Census data puts the population of this ZIP code at 38,157 residents. This puts it well ahead of the typical ZIP code in Iowa (roughly 22,608).
Median household income is about $78,600 (above the Iowa average).
Other ZIP code codes in Iowa serve areas such as Montour, Cresco, Davenport.