About 51056 - Smithland, Iowa
The ZIP code 51056 of Smithland falls within Iowa, the United States - a small area by population. It sits within Smithland County.
Census data puts the population of this ZIP code at 1,445 residents. That's below the Iowa average of about 22,608 people per ZIP code.
Median household income is about $70,800 (near the Iowa average).
Other ZIP code codes in Iowa serve areas such as Montour, Cresco, Davenport.