Common/Shared (IA)
From The RadioReference Wiki
County Numbering
File:Iowa Sheriff County Numbering.png
Iowa - EMS(Statewide)
155.340 is used state wide, refered to as "HEAR", "STATE EMS", or "340". 155.280 is designated as a hospital to hospital frequency, paging can also be heard on the frequency.
Here is a map of EMS Communication Plan for Iowa, each frequency is referred to as "Regional EMS":
Here is a spreadsheet of all Iowa hospitals with frequency and assigned PL: