That age means your average Fortune 200 CHRO is Half Boomer, half Gen-X. 

More stats on Fortune 200 CHROs from a great piece of research from Mark Effron and the Talent Strategy Group:

--Tenure of Chief Human Resources Officers Is Low: The average tenure for a Fortune 200 Chief Human Resources Officer is less than five years. The CHRO’s tenure in role is 35% less than the CEO counterparts.

--CHRO Succession Planning Needs Improvement: 68% of Chief Human Resources Officers were hired internally, from within the organization. In nearly one out of three situations, the CHRO is hired externally. The War for Talent on great CHROs is alive and well, and to ensure continuity in Human Resources, organizations need to better develop their internal talent to take the top role.

--HR Domain Expertise Reigns: 80% of Fortune 200 Chief Human Resources Officers had more than five years of experience in HR before being promoted to the top role. Domain expertise still reigns. However, experimentation with the CHRO role remains abundant with over one in five organizations hiring a CHRO without domain expertise.

--The Chief Human Resources Officer is a Champion for Diversity: 57% of Fortune 200 Chief Human Resources Officers are female, helping add diversity to traditionally un-diverse Senior Management teams.

Click the link above to get the research from Mark and the Talent Strategy Group - Good stuff.