Hi everyone I'm having some trouble and wondered if someone could help. I'm conducting a zonal travel cost assessment and I have an ESRI point layer file of zip codes for the U.S. that has the 2012 populations in the attribute table. I've created a multiple ring buffer around my feature of interest and what I would like to do is see the sum total population contained within each buffer. Any suggestions? I've tried selecting by location tool but it just gives a list of the zip codes within the buffer (there are a lot) is there anyway to get a total?