"Secure areas of police stations" should be removed. There is no such law that prevents individuals from lawfully carrying a firearm into any area of a police station, except (according to 801.262) when it involves prisoners and guns (such as a prisoner obtaining a gun while in jail, a non-prisoner giving a prisoner a gun, a prisoner selling another prisoner a gun, etc...).
So unless your intent is to go to a jail facility (which could be construed as meaning a police station lobby) to provide a prisoner with a gun, or you are a prisoner yourself, you can lawfully carry into a police station- even in to "secure areas" (whatever that means).
So unless your intent is to go to a jail facility (which could be construed as meaning a police station lobby) to provide a prisoner with a gun, or you are a prisoner yourself, you can lawfully carry into a police station- even in to "secure areas" (whatever that means).