Nobody's commented on your most important point: "city" does not equate to "community involvement." Suburban people statistically volunteer more and join groups more than rural or urban people, and rural people are more likely to meet in person with their groups than suburban or urban people [0].

[0] https://www.pewresearch.org/short-reads/2026/09/28/how-urban...

I'm not sure how much that is age correlation. Suburbs are older and usually have more parents, so they're more likely to volunteer in clubs and organizations. Even in my urban area the most frequently volunteered at organization is the PTA and most of the soup kitchens and senior centers have volunteers in their late 30s to early-50s.

Community engagement isn't also quite the same thing as friend groups. This is making me interested in doing a similar analysis.

I thought that groups and clubs are where you go when you do not have personal friends, to find them.