LinkedIn crunched a bunch of data and came up with The 25 Hottest Skills That Got People Hired in 2014. It needs to be noted that this is comes from their users and what recruiters are searching for on their site. This explains why healthcare, retail and other skills are not listed.
I am not surprised that a majority of the skills listed below are technical in nature. With marketing related skills in second.
For my recruiter and workforce planning friends this may give you some idea of what demand and competition is like.
LinkedIn notes four trends: STEM, Data, a second language (although not in the U.S.) and technical marketing.
Here are the top 25 U.S. skills of 2014 (click the link above for a list from a few other countries):
Statistical Analysis and Data Mining
Middleware and Integration Software
Storage Systems and Management
Network and Information Security