Looks like for cacher "Cool Cow Cachers" has finds in Indiana but the script output does not include their finds. Maybe a simple typo.
Your total area is only 481212.9sqmi (13.61%) and you need 883987.03sqmi to make 1/4 of the US's area.
Here are your qualifiers so far:
GCB12C "The Unknown Covered Bridge"
GC25RYW Are You Thirsty?
GC1J2JC Evil (C)ammo 8
GC5AX15 GeoWoodstock 2018
GC1HQNW Hebron Flying TB Hotel