Zip Code 51544 — Lewis, IA

ZIP Code 51544 is associated with Lewis, IA, in Cass County. The listed population estimate is 793; estimated density is 6.2 people per square mile. Among records with population estimates, it ranks #4 of 8 in Cass County and #543 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.313160, -95.108170)

Data MetricLocal Statistic
Postal / Zip Code51544
Primary CityLewis
State / ProvinceIA
CountyCass
Total Population793
Population Density6.2 people/sq mi
TimezoneAmerica/Chicago

How 51544 Compares

MetricZIP 51544Cass County recordsIA records
Population estimate79313,872 (sum)3,210,984 (sum)
Population Density6.2 /sq mi----
County population rank#4 of 8----
State population rank#543 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 51535Griswold6.1 mi1,697
ZIP 50022Atlantic9.0 mi8,526
ZIP 51577Walnut11.5 mi1,561
ZIP 51552Marne12.0 mi169
ZIP 51532Elliott12.4 mi644

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 →