TOPEKA – Showing a continued strong jobs market, Kansas’ December seasonally adjusted unemployment rate was 4.2 percent, unchanged from the November revised unemployment rate and down from 4.9 percent in December 2013, the Kansas Department of Labor reported.The December number for Barton County stood at 3 percent, virtually unchanged since November when it was 2.9. The rate was 3.3 in December 2013. Seasonally adjusted figures show Kansas gained 12,800 private sector jobs since last year, or 1.1 percent. Kansas nonfarm jobs increased by 12,800 jobs, a 0.9 percent increase since December 2013.