Census ZIP Code Tabulation Area
Will ZIP 19081 have a white Christmas?
Snow-on-the-ground odds near Swarthmore, PA, for December 25, 2026.
The historical picture
The validated 1991–2020 spatial model indicates an estimated 10% chance of at least one inch of snow on the ground at this ZCTA’s Census internal point.
ACS population
10,089
Land area
2.16 sq mi
Nearest station
6 mi
3DEP elevation
128 ft
Climate period
1991–2020
This is a Census ZCTA, not a USPS delivery-route boundary. Its internal point is 0 miles from Swarthmore. The estimate retains all four NOAA source stations and their interpolation weights.
Frequently asked questions
- Will ZIP 19081 have a white Christmas?
- Its validated 1991–2020 historical estimate is 10%, or about about 1 year in 10. Inside the forecast window, live ensemble guidance is blended with that history.
- Is this the exact USPS ZIP boundary?
- No. The Census Bureau creates ZIP Code Tabulation Areas to approximate the geography of USPS ZIP Codes. USPS delivery routes can change and do not form a permanent national polygon dataset.