Zip Code 50623 — Dewar, IA
50623 is a ZIP Code associated with Dewar, IA, located within Black Hawk. The postal region supports an estimated population of 153 residents across Data Pending housing units, with a population density of 28.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.526930, -92.209620)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 50623 |
| Primary City | Dewar |
| State / Province | IA |
| County | Black Hawk |
| Total Population | 153 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 28.6 people/sq mi |
| Timezone | America/Chicago |
How 50623 Compares
| Metric | ZIP 50623 | Black Hawk County | IA State Average |
|---|
| Population | 153 | 134,441 | 3,210,984 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 28.6 /sq mi | -- | -- |
Nearby ZIP Codes
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 →