The aim of this was to have a map of all Facilities on the Secure Facilities Locations page with a canon location. It's on a separate page just because that makes it much easier to edit and explain. If a Site is added to the Facilities page, you can either add it here yourself, or post the location in the comments for someone else to add.
I have made another map containing sites from other branches, so do check that out! This is merely the EN version of the page, the INT version has way more and it would be interesting if more people on this wiki made use of them!
Partially based this on an old map which used to show sites but no longer seems to. According to that Site-17 was near Boston Massachusetts and Site-19 was in Omaha, Nebraska, but there's too much uncertainty and inter-canon variability (e.g. Site-17, Wales, Site-19, Michigan) to add either of those to the map.
I personally like to think Area-12 is in North Dakota, that feels like it fits the description, not sure on any of the others.
EDIT: The legend looks weird now as a courtesy to translators to allow them to swap the English out for any other language. If you want to be silly you could change it to:
[[include :scp-wiki:fragment:facilities-map
legend = Leg End|
site = Area|
area = Site
]]
and post that on a page of your choice.