If you had been wondering which banks had the largest share of deposits in your state, this NerdWallet post
may interest you. It's based on the June deposit data from the FDIC. In the post a table shows the top 2 banks by deposits for each state. As you might expect, the big banks are often the top 2. For example, in California, Florida, and New Jersey, Bank of America and Wells Fargo are #1 and #2. In Texas, Chase and Bank of America are #1 and #2. If you're interested in the details, the FDIC summary of deposits page
can show you details for all bank branches in the nation.