I'm 34 and working to join a department. At least in the departments I've interviewed with, my age seems to be in the median. Some older, some younger.
I don't have a problem taking orders from someone younger than me, most lieutenants I trained were much younger than me. Besides that, until I have some experience there, age doesn't matter. The younger, but more police experienced officer knows that district better than me.
"The Constitution was made to guard the people against the dangers of good intentions."
"A government big enough to give you everything you want is big enough to take away everything you have."