Katrina, however, is in a class all by itself:

Effective immediately, the Postal Service is not accepting any Standard Mail or Periodicals Mail — from any source — addressed for delivery within the following three-digit ZIP Code ranges: 369, 393, 394, 395, 396, 700, 701 and 704.

The first two are Meridian, MS. 394 is Heathen Homeland, Hattiesburg, MS. 395 is Gulfport; 396 is McComb. 700 and 701 are NOLA; 704 is Mandeville, LA.

Via BoingBoing.