Where can I find information on the zones for promotion? Trying to figure out when or if my husband is/will be in zone. TIA 

For what rank? 

It is in the maradmins, you can find online. Depends on rank, date he picked up said rank, cuz it the zones go by when they picked up rank. 

It's for gunny. I tried looking online in the maradmins but only came across the fy13 selected gunnery sergeant. Trying to figure out if my husband falls into any of the categories. (I always talk about how resourceful I am so he's challenged me to find this info but I can't seem to find what I'm looking for.) 

I think he might be tricking you. The gunny board just wrapped up in July? They won't have a new maradmin with the new zones and other info for several months. 

It's not out yet but the below zone is an estimate of the in zone the following year. So look at the FY2013 board, find his MOS and look and see if he was in the below zone. If he was then he should be in the zone next year.