📍 View location on OpenStreetMap (41.226400, -95.132410)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 51535 |
| Primary City | Griswold |
| State / Province | IA |
| County | Cass |
| Total Population | 1,697 |
| Population Density | 4.8 people/sq mi |
| Timezone | America/Chicago |
| Metric | ZIP 51535 | Cass County records | IA records |
|---|---|---|---|
| Population estimate | 1,697 | 13,872 (sum) | 3,210,984 (sum) |
| Population Density | 4.8 /sq mi | -- | -- |
| County population rank | #2 of 8 | -- | -- |
| State population rank | #315 of 969 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 51544 | Lewis | 6.1 mi | 793 |
| ZIP 51532 | Elliott | 6.5 mi | 644 |
| ZIP 50847 | Grant | 9.7 mi | 35 |
| ZIP 50843 | Cumberland | 12.7 mi | 540 |
| ZIP 50022 | Atlantic | 14.8 mi | 8,526 |
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 →