I'm 25 but I'll be 26 once school starts. I got in everywhere I applied, which I absolutely did not expect! I'm currently trying to decide between HKS, UW Evans, and UT LBJ.
Work experience was a HUGE factor for me - when I finished undergrad, I thought I wanted an MA in international affairs. I then got a job at a non-profit and realized that analytics were critical to our work, which is what led me to pursue an MPP. People say this over and over, but it really is true - working for a couple of years before going to grad school gives you so much clarity.