I think singles would be quite interested in dining establishments, and places where they could go to meet potential partners (so, a thriving night life, but not a nightlife that primarily caters to short-term mating).
I've listed things that are psychological and behavioral, but they are also social and economic.
If we are looking at financial advice specifically related to dating, assuming you are looking for a long-term partner, it is important to remember that the goal of dating is to get to know the other person.
A large financial investment into the first date may get a second, but when it comes to determining long-term compatibility, simply having coffee or going for a walk is likely to be as, or more effective than a fancy dinner.
I think they would be an economic gain as they may have more disposable income, since they are not in a family situation.
Some cities might encourage dating by offering plentiful nightlife options and daytime attractions.
Odds of meeting a match are greater in areas more highly populated by single people.
With the rise of dating apps and therefore dates, what financial advice do you have targeted to singles on a budget?
What should singles be looking for when choosing a city?
People who are single are more different than they are the same; they vary by age, interests, political leanings, partner preferences, and goals.