Zip Code 51056 — Smithland, IA

ZIP Code 51056 is associated with Smithland, IA, in Woodbury County. The listed population estimate is 346; estimated density is 4.0 people per square mile. Among records with population estimates, it ranks #17 of 20 in Woodbury County and #772 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.234430, -95.953910)

Data MetricLocal Statistic
Postal / Zip Code51056
Primary CitySmithland
State / ProvinceIA
CountyWoodbury
Total Population346
Population Density4.0 people/sq mi
TimezoneAmerica/Chicago

How 51056 Compares

MetricZIP 51056Woodbury County recordsIA records
Population estimate34697,439 (sum)3,210,984 (sum)
Population Density4.0 /sq mi----
County population rank#17 of 20----
State population rank#772 of 969----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IA

ZIP CodeCityDistancePopulation estimate
ZIP 51051Rodney2.2 mi39
ZIP 51044Oto5.0 mi165
ZIP 51026Hornick6.3 mi910
ZIP 51015Climbing Hill9.7 mi45
ZIP 51034Mapleton9.8 mi1,674

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →