Vox.com’s Everything you need to know about librarians interprets this Bureau of Labor Statistics (BLS) map to show that “the Southwest hates librarians.”
What the map is actually showing is that librarians make up a smaller part of our workforce than of the nation as a whole. Hover over New Mexico (and any state) for average salary and other interesting data.
The BLS has a lot more information about employment and wages for librarians on the Occupational Employment Statistics page.