Hi Kristi, sorry for the delayed response!
So it turns out that the property values in the area have increased. I bought the property in January of 2017 and since then, the property values (at least according to Redfin, Zillow, Trulia, etc..) have increased ~20% or around a little less than 10% per year. That being said, I really don't have any way of telling whether or not the appreciation in the area was due to the Amazon distribution center. I'm an absentee landlord, so I am not as plugged into what is going on in the local economy (although I probably should be), but I haven't heard or seen any real news regarding how the distribution center is affecting daily life there. I've had two sets of tenants in the property since I bought it, but neither tenant worked for Amazon, or moved in because of its proximity to the distribution center (this rental is about 5 minutes away from the warehouse). I have been able to increase the rent each year, and currently we are sitting at $1200/mo with this unit, up from $1050/mo when I first rented it out in 2017.
It's only been 2 and 1/2 years since I made the purchase, so I may be premature in saying this, but I don't think I would base a decision to purchase a rental unit in a depressed area solely on the addition of an Amazon distribution center. I just don't think the addition would bring enough of a boost to the local economy, or really raise the quality of tenants that are in that area. Hopefully you found this helpful! Let me know if you have any other questions and stay safe!