20620 vs 20634 ZIP Codes
Callaway, MD · Great Mills, MD
| Metric | 20620 | 20634 |
|---|---|---|
| City | Callaway | Great Mills |
| County | St. Mary's | St. Mary's |
| State | Maryland | Maryland |
| Time zone | Eastern Time | Eastern Time |
| Population | 1,443 | 5,927 |
Demographic figures come from U.S. Census Bureau / ACS data included in the source ZIP dataset; many ZIP codes have no demographic figures in that dataset.