It's possible that the sizes vary slightly depending on the batch of shoes from manufacturer. Here's what I noticed when I tried them on today (first time), I'm most often a size 6 in shoes (6.5 once in awhile) and I fit into a women's size 6. When I tried the youth sizes, the youth size 6 is slightly larger than women's 6 and the youth size 5 is slightly smaller than women's size 6. In other words, youth 5 < womens 6 < youth 6. Hope this helps someone!
Just to update, I ended up trying them again and I actually fit the 5 in womens and 4 in kids. For whatever reason, the shaft height of the size 5 womens is shorter than the size 6 so it is the same height as the kids (ones with the white tag on the back). The kids sizes that have a white label are slightly taller than the ones with the brown.