Which States Get Which Mints?

In Houston we get Denver mint.

I believe it has to do with the local banks and which federal reserve bank they belong to. I makes sense to me that most of the reserve banks are pretty much sourced from one mint or the other, but I would not be surprised if the ones in the middle have the option of using either mint depending on demand.

Tezro128, I also would be interested to see if there's a 'routine' for coin releases or just totally disorderly.

I'm in the Detroit area and expect to find mostly "P" coins, but sometimes it's just the opposite. I wish I had more data, but I do have a little feedback on my ATB Quarter searching.

2021: 0% "P's", 100% "D's"
2020: 60% "P's", 40% "D's"
2019: 79% "P's", 21% "D's"
2018: 52% "P's", 48% "D's"
2017: 51% "P's", 49% "D's"
2016: 48% "P's", 52% "D's"
2015: 50-50
2014: 58% "P's", 42% "D's"
2013: 55% "P's", 45% "D's"
2012: 70% "P's", 30% "D's"
2011: 61% "P's", 39% "D's"
2010: 75% "P's", 25% "D's"

I don't know if any of my data is helpful. The data is faulty. For instance, 2015 shows a 50-50 split, but that just means I have found all the "P's" and "D's" for my five sets, even though 80% of the coins I searched through might have been "P's".
Also, some yearly stats have their own differences (2017: can't find "P" DC's and can't find "D" IND, but it evens out). This year all I've found are "D's" in all quarters and cents; no "P's".

Minnesota we get mostly Denver except for 2019 where we got a ton of 2019 p pennies and the 2019 p San Antonio missions quarters. I've only found one 2019 d San Antonio so far. Seen a fair amount of 2019 p nickels around too

Minnesota - usually D mint, although for the American Memorial Park some rolls were P mint and all the rolls of War in the Pacific I got were P mint. @ JohnH4444 shows some randomness - all my San Antonio are D mint.