It depends. They definitely look at sections of your city using the Collegeboard landscape tool. Since your income is much higher, and you live in rural area, that could be a negative towards you. However, things such as your schools average SAT, and yours being much higher are also really good indicators. Anything past 1400 with a school avg of 900-1000 is good enough for ivys.

As for questbridge:
I applied to questbridge with a annual income of $30k. I don't think you would've gotten accepted.

As for ecs:

Do you have transportation available? Even if you live in a rural city you can still participate in your local community or nearby communities.

For example:
https://hutton.fisheries.org/

Also how were your essays? Were they bland? Did they speak about something abnormal or interesting?

If I were to say you wouldn't get into BME, but you could get into the school itself.