Join Date: Oct 2007
Location: Catania, Sicily(CTA)/South Jersey (PHL)/Houston(IAH)/Red Stick, La.(BTR)/airborne in-between
Programs: United Plat (1MM), AA ExecPlat, ITA/AZ Freccia, Hilton Diam, Bonvoy Gold, Hertz Prez, IHG gold
Posts: 3,875
If OP is in Des Moines (KDSM) the nearest office they could travel to is Chicago. I don't think you can overnight to a regional passport office, you have to use the national center's PO Box.
Cent210's link has the contact numbers and such.
Ciao,
FH