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Numerical Differences between ZCTA and ZIP Code Geographic Base Files in New York State
| ZCTA (2000) | ZIP Code (GDT 2000) | |
| Number of Polygons | 2,450 | 1,599 |
| Number of Unique Records | 1,676 | 1,599 |
| Average Size | 51.90 km2 | 70.26 km2 |
| Minimum Size | 0.003 km2 | 0.006 km2 |
| Maximum Size | 1,054 km2 | 1,217 km2 |
| Standard Deviation in Size | 80.34 km2 | 102.71 km2 |
