Thanks for the clarification! What I would also love to have is a map showing the numeric districts CNF is divided into. Many years back I was able to copy what ANF was divided into on a paper map I still have. As far as I know those ANF district numbers are obsolete. Partial section attached.
View attachment 162909
I have noticed the lat/long coordinates on Wildcad so at least I have a rough idea of the patrol areas vs unit numbers in CNF.
The name of these areas of land is not districts, so as not to confuse them with Ranger Districts, these are response areas. The first digit, however, does reflect the ranger districts of the forest. Not all response areas have a fire station, but more than half, maybe 3/4 do have a station and an engine assigned to it. That is true of the southern California forests, but not so much in the rest of the country. I don't have a response area map for the Cleveland and don't have any connections I can use to come up with one.
One more thing, the engine number reflects the response area number. For example, in the above Angeles NF map you provided a view of, The Texas Canyon station will house Engine 331, that is a Type 3 engine stationed in response area 31.