Very interesting data. The precinct of Lithium, just a half mile north of my house, went from an Obama: 49.17% McCain: 49.58% precinct in 2008 to a Trump: 74.18% Clinton: 21.31% precinct in 2016. Around 240 people voted both times and it is 100% rural, the biggest "town" is probably 50ish people. Another interesting one that follows the national trends, super rich white area in Cape Girardeau that went from a 58% McCain precinct to a 51% Clinton precinct.
Are you referring to the area on Old Bloomfield Road heading out of Cape past Menard's with the giant houses and Dalhousie Golf Club? Wow, I'm really surprised that Hillary won that area. I recall seeing that road littered with Trump yard signs, but now I'll have a reason to smile next time I drive there (soon as they're done with the road work).
This was my first year voting in Cape, but my precinct was less for Trump than the entire city. I guess that'll help me get through these next 3-4 years of hell.