I know this isn't the answer you're looking for...but you're doing great! I'd guess that many (most?) of the people who get to 70-75% savings rates on here, are doing it with dual-incomes. Once you find a partner/get married, you might just jump to 80-85%!
:-P
While it is possible to bring down certain fixed expenses (rent, utilities) by sharing your home with a significant other and with dual-incomes, certain expenses (food, notably) do go up on dual-incomes. And note that when two people save at 75% savings rate, when they join their finances, they most likely will save at 75%, and not higher, because while you are adding the numerator (savings) from dual-incomes, you are adding the denominator (take home pay) also.
Current savings rate (not including student loan payoff as part of savings here, as I'll explain below): net income (A) = $63825/12 = $5321 , net expenses (E) = 1839 + 60 + 130 (health insurance and transportation, which is an expense) = 2029 , total savings rate = 1-(E/A) = 0.62 = 62%.
OP, others have suggested many useful points - I'll toss in my $0.02 from the most impactful, to the least impactful.
1) Food bill/restaurants for one person is ridiculously high. My experience has been that NYC is one of the insanely cheap places to live if you take rent out of the equation. You have $40 prix fine dining options, and you have $3 hole in the wall taco places. You want to hang out at the latter. My fav ones are the whole bunch of hole in the wall ethnic food places near Washington Square park or near NYU campus. Hang out with your friends in the park, people watch and enjoy your food ordered to go from these places.
You mentioned you live in Bed-Stuy. Go to the Trader Joes in Brooklyn Heights, they have all kinds of fancy ingredients at lower cost than the gourmet delis that crop up (I'm thinking of Park Slope, but I bet Bed-Stuy probably has plenty of these as well). I'm a huge fan of Beth at Budgetbytes.com who posts delicious recipes, each costing on the order of $1 per meal. Which is the upper limit on how much things should cost.
Having been somewhat emotional about food, my trick to reduce my food spending is to challenge myself to reduce my food spending by a certain number and donate that number or a percentage thereof, along with some of your own time to charities focusing on food shelters. FYI, the cost of feeding a starving child PER DAY is $0.25. If you commit to cut down your meals to $2 per meal, which incidentally is twice the cost per meal that MMM recommends, your cost is about $6 per day (as opposed to $12 you are spending on groceries alone right now), and $180 per month. As my own Asian ancestors have demonstrated, great food is not at all about expensive/gourmet ingredients, and all about savoring every scrap of food, which you will be grateful for when you realize the incredible cushion you have built into your life right now, and the time you put into creating it. I'm not admonishing you, OP, but I have too often succumbed to spending ridiculous amounts of money on food in the past, and until I developed this mindset, and committed to working with food shelters, didn't bat an eyelid about it either. Once you see homeless people line up for one meal, and tiny little kids asking you for food, you will find that rice and beans is super delicious, and every extra thing you put on your plate makes you feel like you are basking in some kind of luxury.
Okay, tl;dr version - > as much as it is about shopping for cheap ingredients and cooking delicious meals therewith, cutting down food spending is equally about your mindset, where you train your mind to think that simple dishes like soup and rice and beans are equally delicious. Plus being at least somewhat of a vegetarian can accelerate progress in this area. Again, it's about mindset, where you don't feel deprived because you are not eating meat.
New goals I recommend: $180 per month for groceries, $70 per month for eating out= $ 250 per month; savings of $350 per month, compounding at 7% to $61,283.06 in ten years New savings rate if you add back $350 of savings, or cut expenses by $350 = 1-((2029-350)/5320) = 0.69 = 69%. But you can do that yet, because you still have to pay back your student loans.
But holy mackerel, seven full percentage points.
2) There are some philosophies on how student loan payoff is part of your "savings". I disagree. While it is true that no student loan is better than student loan and frees up cash flow, the paid of student loan is gone, and does not let you tap into it if you need to unlike say a mortgage where your principal goes to building equity for you. There is no such thing as a good debt. So, pay these off ASAP - in the initial months, commit to paying the minimums on these, and then apply the $350 of savings from food spending above. Once these are gone, you can apply the cash flow to even higher savings rate. Read nomoreharvarddebt on how one guy paid of $90,000 student loans in 10 months. Even without any sort of compromise on your lifestyle, you should be able to pay off your loans in four years if you just kept paying $350-$400 extra every month.
Extra cash flow once your student loans are paid off: $484 per month.
Savings from food spending above: $ 350 per month.
New savings rate: 1-((2029-484-350)/5320) = 0.78 = 78%
3) Clothing - same spiel as food above. Even if you work in a business environment where suits are typical, buy a few good pieces of outer layers, and mix and match. Go shopping at outlets. I work with some people pulling a $1 million per year, and still wearing the same tailored suit they purchased from 14 years ago, and driving a gently used Honda Accord to business meetings with CEOs. In a conversation, the same gentleman refused to buy anything priced at over $50 per clothing item, and anything that can't be found at TJ Maxx. So there you have it. Around 50% reduction easily possible.
New goals I recommend: $50 per month for clothing; savings of $50 per month, compounding at 7% to $8,754.72 in ten years New savings rate if you add back $350 of savings from food, $484 from student loans, $50 from clothing, or cut expenses by $884 = 1-((2029-884)/5320) = 0.79 = 79%
And there you have it. Once you remove rent out of the equation, one can easily accomplish 80% savings rate in NYC, the most expensive place to live on the planet. And assuming that I would not have a car if I lived in NYC, the possibility of even more savings opens up, putting my FIRE timeline at 5 years or so. Sweet deal, I would think.