Does Harvard truly consider every aspect of a student's application-including financial information?

Hey guys, so it's pretty well known that the Ivies are pretty holistic in their admissions. However, I was wondering if the adcoms are aware of the student's income as they review the application. I'm on the low end for finances, which prevents me from taking up as many EC's as I would like to. Should I specify something along these somewhere on my application (if so, where? <--additional info section, perhaps) or would that be unnecessary? Thanks in advance, hope you guys are having a good day!