“Wimberleyite” is the name of an inhabitant of Wimberley, Texas. The name “Wimberleyite” has been cited in print since at least 1963, when “Wimberleyite” was used several times in the book Wimberley’s Legacy by Williedell Schawe.
 
 
Wikipedia: Wimberley, Texas
Wimberley is a small town in Hays County, Texas, United States. Prior to its incorporation in May 2000, it was a census-designated place (CDP). The population was 2,626 at the 2010 census.
 
Google Books
Wimberley’s Legacy
By Williedell Schawe
San Antonio, TX: Naylor
1963
Pg. 201:
Mark Sherman died in the year 1908 and is respected in the memories of many old time Wimberleyites.
 
Google News Archive
24 January 1974, The Citizen (Hays County, TX), “Three seats vacant on Hays Board,” pg. 18, col. 3:
Held last term by Lanny Montague, the place has traditionally been held by a Wimberleyite.

Google News Archive
11 July 1974, The Citizen (Hays County, TX), pg. 2, col. 4:
No water shortage in
Wimberley, manager says
peggy collins
WIMBERLEY—Along with their water bills this moth, Wimberleyites received from the Wimberley Water Supply Corporatio a reminder to “use good judgment” when they water their grass.
 
Houston (TX) Chronicle
Wimberley balances tourism growth with preservation
Keeping the Quiet ...
HARRY SHATTUCK
Published 05:30 a.m., Sunday, June 1, 2003
(...)
“The Lions’ Club sponsors it, and they do wonderful deeds,” Johnson says. “And most Wimberleyites do their part to support Market Days by staying off the roads and out of the tourists’ way.”
 
The Portal to Texas History
Spring 2006, Heritage, “Theater Under the Stars, Wimberley Style” by Robin Pier, pg. 15, col. 1:
The theater has been a main form of entertainment from Memorial Day until Labor Day for Wimberleyites and tourists since 1948.
 
RV’s, RV Parks & RV basics
What do people from Wimberley call themselves?
As we were enjoying one of our first nights out on our new ‘home away from home’ town (Wimberley) it occurred to me that if you actually LIVED in Wimberley you might be called something.
 
For example, Austin people call themselves ‘Austinites’.
So I asked several people that night what people from Wimberley called themselves. Surprisingly there is not a name… yet.
Here are some of my ideas.
Wimberlites – Personally don’t like this one – sounds like something related to coal.
Wimberloogies.
Wimberooligans.
Wimbagians.
Wimmerites.
Wimolians.
Wimites.
Wimberleogians.
Wimberleyites.
Wimberleyans.
What are your ideas? They really need a name.
Marlan “Living Small” RV Guy October 29, 2009