In researching some test counties, I didnt find any that specifically prohibited loaded exposed carry-I believethis is in part, because this falls in the state legislatures purview as the state has already provided for loaded and exposed carrry licensing in 12050. Yay preemption.
I think a couple maps could be a great resource for newcomers.
I think the easiest and most obvious would be a map of counties that do/do not allow loaded OC in unincorporated areas.
Another thing that would be great, but I don't actually expect to see, would be a map of the entire state (zoomable like google maps or whatever) with every K-12 school and its 1000-ft radius mapped out, clearly showing places to avoid for any area.
Obviously the latter would be a rather large amount of work, but the former would be quite doable. Perhaps such a list already exists, and I just haven't found it. It could be merely a list of counties, but ideally it would be a map showing incorporated areas and non-permissive counties in red, and unincorporated areas in loaded-OC-permissive counties in green.
However, there are counties that have prohibited possession on county property as with Alameda County- in places like their fairgrounds. Unless there is some exemption for licensees, I believe such prohibition is a restriction that could be 'challengeable' under state preemption. (Not that I am recommending it.)
The other reoccuring restriction that I see is that of ordinances prohibiting discharge within a particular area or within a certain set distance from structures. These prohibitions combined with wording in 12031, make loaded carry illegal in those areas unless you are exempted.
Now the map that Im sure we would all like to see- One that depicts all1000 foot school zones, public streets and highways, incorporated city limitsand all discharge prohibited areas as laid out by local ordinance (including 'safe zones' with set distances from occupied structures.) would be super labor intensive, and showthat in most populated areas loadedand exposed carrywas a no-no.The upside is that it would show about 80 percent ofCalifornia in the green- its just not in areas where people live or congregate.
So the maps depicting the prohibitions would be the following;
Map indicating counties that specifically ban loaded and exposed carry- All green.
Map indicating counties that prohibit discharge a set distance from buildings- All red.
Map indicating counties that prohibit possession on county property- Varigated, but not necessarily helpful.