Trustmark National Bank holds $15.2B in deposits across 57 counties in 16 ranked markets and 5 states. Its deposit footprint is broadly distributed: the top three counties (Hinds County, Rankin County, Madison County) hold 37% of its deposits, and Mississippi accounts for 64% of the total. It ranks among the three largest institutions in 29 of the 57 counties where it operates.
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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. | Hinds County, MS | $3.4B | 22.4% | 40.4% | 12 |
| 2. | Rankin County, MS | $1.2B | 7.9% | 26.8% | 9 |
| 3. | Madison County, MS | $1.1B | 6.9% | 19.1% | 7 |
| 4. | Bay County, FL | $788M | 5.2% | 17.9% | 7 |
| 5. | Shelby County, TN | $500M | 3.3% | 1.6% | 12 |
| 6. | Walton County, FL | $480M | 3.2% | 16.6% | 5 |
| 7. | Harris County, TX | $465M | 3.1% | 0.2% | 8 |
| 8. | Mobile County, AL | $428M | 2.8% | 4.2% | 6 |
| 9. | Warren County, MS | $349M | 2.3% | 28.4% | 4 |
| 10. | Lincoln County, MS | $314M | 2.1% | 31.8% | 3 |
| 11. | Desoto County, MS | $288M | 1.9% | 6.3% | 6 |
| 12. | Forrest County, MS | $285M | 1.9% | 12.8% | 5 |
| 13. | Lauderdale County, MS | $284M | 1.9% | 15.3% | 3 |
| 14. | Jones County, MS | $259M | 1.7% | 14.1% | 2 |
| 15. | Limestone County, AL | $240M | 1.6% | 17.2% | 3 |
| 16. | Baldwin County, AL | $220M | 1.4% | 3.3% | 4 |
| 17. | Dallas County, AL | $211M | 1.4% | 30.5% | 1 |
| 18. | Escambia County, AL | $205M | 1.4% | 18.0% | 2 |
| 19. | Fayette County, TN | $202M | 1.3% | 22.4% | 3 |
| 20. | Montgomery County, AL | $199M | 1.3% | 2.8% | 3 |
| 21. | Pike County, MS | $197M | 1.3% | 19.7% | 2 |
| 22. | Copiah County, MS | $194M | 1.3% | 37.8% | 4 |
| 23. | Lamar County, MS | $193M | 1.3% | 9.7% | 2 |
| 24. | Marion County, MS | $162M | 1.1% | 23.9% | 2 |
| 25. | Lowndes County, MS | $161M | 1.1% | 9.9% | 3 |
| 26. | Autauga County, AL | $157M | 1.0% | 16.6% | 2 |
| 27. | Smith County, MS | $146M | 1.0% | 52.8% | 2 |
| 28. | Alcorn County, MS | $145M | 1.0% | 15.1% | 2 |
| 29. | Butler County, AL | $134M | 0.9% | 33.0% | 3 |
| 30. | Okaloosa County, FL | $132M | 0.9% | 2.6% | 2 |
| 31. | Washington County, MS | $131M | 0.9% | 10.4% | 3 |
| 32. | Jefferson County, AL | $130M | 0.9% | 0.3% | 3 |
| 33. | Leflore County, MS | $128M | 0.8% | 11.0% | 3 |
| 34. | Monroe County, AL | $126M | 0.8% | 30.2% | 1 |
| 35. | Lee County, MS | $124M | 0.8% | 2.8% | 4 |
| 36. | Leake County, MS | $122M | 0.8% | 23.4% | 3 |
| 37. | Simpson County, MS | $120M | 0.8% | 16.7% | 1 |
| 38. | Barbour County, AL | $109M | 0.7% | 26.6% | 2 |
| 39. | Walthall County, MS | $108M | 0.7% | 43.8% | 2 |
| 40. | Madison County, AL | $100M | 0.7% | 0.9% | 2 |
| 41. | Amite County, MS | $95M | 0.6% | 57.1% | 2 |
| 42. | Elmore County, AL | $93M | 0.6% | 7.5% | 2 |
| 43. | Lafayette County, MS | $92M | 0.6% | 4.4% | 2 |
| 44. | Escambia County, FL | $85M | 0.6% | 1.3% | 1 |
| 45. | Perry County, MS | $82M | 0.5% | 52.7% | 2 |
| 46. | Shelby County, AL | $76M | 0.5% | 1.7% | 1 |
| 47. | Lee County, AL | $75M | 0.5% | 1.7% | 2 |
| 48. | Marengo County, AL | $73M | 0.5% | 14.5% | 2 |
| 49. | Fort Bend County, TX | $70M | 0.5% | 0.4% | 2 |
| 50. | Itawamba County, MS | $61M | 0.4% | 12.9% | 1 |
| 51. | Harrison County, MS | $59M | 0.4% | 1.2% | 2 |
| 52. | Bibb County, AL | $51M | 0.3% | 17.3% | 1 |
| 53. | Waller County, TX | $49M | 0.3% | 14.2% | 1 |
| 54. | Tuscaloosa County, AL | $25M | 0.2% | 0.6% | 1 |
| 55. | Oktibbeha County, MS | $18M | 0.1% | 1.1% | 1 |
| 56. | Neshoba County, MS | $13M | 0.1% | 1.4% | 1 |
| 57. | Montgomery County, TX | $0M | 0.0% | 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.