It's really, really variable. At least in NC ... it's people here with a fair amount of assets, just travelled abroad, no kids who are eligible. the amount might not be high, but still eligible. damn near just as many "well to do" are abusing this system . Trust.
Bottom line is you can live off 15 with out any support and little to no nest egg in most towns definitely and even near the periphery of some sizable cities not named NYC, LA, CHI and ATL and MIA and HOU and DAL.
But yes, you will struggle... it's not always struggle... and it might not always FEEL like struggle even tho you still kinda are... but you can meet your basic NEEDS. All in all, I still say 15 without some savings/supplemental income, a least one line of credit, partner/relative support in 2017 FEELS like you're poor. Fukked up to say, but it does.
If youre doin 15 just straight up, you really dont need to be in major city. You need to be in a town that's 15mins, 20-30 minutes from the city (as long as your not near one of America's MAJOR metros...(see aforementioned) And you need to have minimal liabilities. No car note and not a lot of additional monthly debt payments.
You should strive for greater than just 15 in 2017 if you want more comfort that involves taking advantage of more "things," and also to better build up your own nest egg.
"They" aren't letting you live a life that includes some consistent amenities and extras off of that unless you're in a smaller town for the most part. And saving will be much tougher.
Strive for greater or value partnerships more. I can see not wanting to be married, but buy a house with your homeboys, siblings or other close friends and relatives. It's hard to be great when you're stressed about money. I was telling a friend of mine a couple days ago, if I knew what I knew now, I would have bought a house with my mom or one of my home girls when I was younger rather than buying one on my own.