First Bank holds $3.2B in deposits across 13 counties in 3 ranked markets and 3 states. Its deposit footprint is highly concentrated: the top three counties (Mercer County, Chester County, Morris County) hold 64% of its deposits, and New Jersey accounts for 77% of the total.
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Data as of June 30, 2025 (FDIC Summary of Deposits)
| County | Deposits | County’s % of Bank’s Deposits | Bank’s % of County Deposits | Branches | |
|---|---|---|---|---|---|
| 1. | Mercer County, NJ | $1.1B | 36.1% | 5.3% | 5 |
| 2. | Chester County, PA | $488M | 15.4% | 3.0% | 6 |
| 3. | Morris County, NJ | $400M | 12.6% | 1.5% | 3 |
| 4. | Somerset County, NJ | $219M | 6.9% | 1.3% | 1 |
| 5. | Hunterdon County, NJ | $182M | 5.8% | 3.0% | 1 |
| 6. | Bucks County, PA | $168M | 5.3% | 0.7% | 3 |
| 7. | Burlington County, NJ | $155M | 4.9% | 1.1% | 2 |
| 8. | Gloucester County, NJ | $116M | 3.6% | 1.3% | 1 |
| 9. | Middlesex County, NJ | $108M | 3.4% | 0.2% | 1 |
| 10. | Essex County, NJ | $106M | 3.3% | 0.4% | 1 |
| 11. | Delaware County, PA | $51M | 1.6% | 0.3% | 1 |
| 12. | Palm Beach County, FL | $23M | 0.7% | 0.0% | 1 |
| 13. | Union County, NJ | $9M | 0.3% | 0.0% | 1 |
Deposits are as reported to the FDIC at branch level, June 30, 2025, and are nominal. “County’s % of Bank’s Deposits” is this county’s share of the institution’s total deposits; “Bank’s % of County Deposits” is this institution’s deposits as a percent of all deposits booked in that county. Counties within a Combined or Metropolitan Statistical Area link to their full profile; other counties are shown for completeness.
All 293 markets and the 1,533 counties within a CSA or MSA are covered in the Market Intelligence resource. See the methodology for how each figure is built and when to expect updates.