Maricopa County, Arizona, a core county of the Phoenix-Mesa, AZ market, holds $177.5B in deposits across 58 insured institutions and 627 branches. Western Alliance Bank is the largest deposit holder at 25.4% share. The top three institutions hold 62.0% of deposits, which places the county in the concentrated band. Deposits have grown 34.4% since 2020 while the branch count fell by 108. It produces $329.8B of output, ranking #7 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 735 in 2020 to 627 in 2025. Institutions: 59 to 58. Top-three share: 64.4% to 62.0%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Western Alliance Bank | $45.1B | 25.4% | +287% |
| JPMorgan Chase Bank, National Association | $36.9B | 20.8% | +11% |
| Wells Fargo Bank, National Association | $28.1B | 15.8% | +8% |
| Bank of America, National Association | $28.0B | 15.8% | +9% |
| MidFirst Bank | $4.4B | 2.5% | +67% |
| BMO Bank National Association | $4.4B | 2.5% | +2% |
| U.S. Bank National Association | $3.8B | 2.1% | -52% |
| UMB Bank, National Association | $3.5B | 2.0% | +221% |
| PNC Bank, National Association | $3.3B | 1.9% | -13% |
| Zions Bancorporation, N.A. | $2.6B | 1.5% | +18% |
The 10 insured institutions with a branch presence in this county, as of June 30, 2025. Five-year change compares the same institution’s county deposits in 2020 and 2025. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. Even so, a large gain can reflect acquisition rather than competitive growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year.
Part of the Phoenix-Mesa market
Maricopa County is one of 3 counties that make up the Phoenix-Mesa, AZ market, a Combined Statistical Area (ranked #13 of 293 U.S. markets by economic output). It produces 95.8% of the market’s output and holds 97.7% of its deposits.
| Measure | Maricopa County | Share of Phoenix-Mesa market |
|---|---|---|
| 2024 GDP | $329.8B | 95.8% |
| Deposits | $177.5B | 97.7% |
| Population | 4,689,558 | 88.8% |
View the full Phoenix-Mesa market profile →
Recruiting in Maricopa County
Deposits are held closely by the largest banks, which often means the bankers worth recruiting are inside a small number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like Maricopa County, on a retained basis.
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