The First National Bank of St. Ignace
St. Ignace, Michigan, Mackinac County
$336M in total assets, the 2,346th largest of 4,309 US banks and 46th of 74 headquartered in Michigan.
- FDIC certificate
- 5074
- Established
- 1888
- Owned by
- Mackinac National Bcorp Inc
- Primary regulator
- OCC
- Website
- www.fnbsi.com
At a glance
Compared with 46 banks headquartered in Michigan with $100 million to $1 billion in assets, as of June 30, 2026.
| Measure | This bank | Percentile | Peer range, middle 90% | Peer median |
|---|---|---|---|---|
| Total assets | $336M | 41% | $405M | |
| Loans | $112M | 20% | $256M | |
| Deposits | $316M | 46% | $349M | |
| Return on assets | 0.31% | 11% | 1.10% | |
| Net interest margin | 2.97% | 4% | 4.23% | |
| Efficiency ratio | 75.0% | 74% | 66.5% | |
| Equity to assets | 5.25% | 2% | 9.87% | |
| Loans to deposits | 35% | 2% | 77% |
Growth
Total assets grew 0.2% a year over the last 5 years and 2.8% a year over 10 years, without acquisitions.
Where they operate
7 branches in 2 counties.
Largest markets by deposits
| County | Deposits | Market share | Rank |
|---|---|---|---|
| Mackinac County, MI | $268M | 81.6% | 1 of 3 |
| Luce County, MI | $48M | 36.8% | 2 of 2 |
Deposits by branch from the FDIC Summary of Deposits, June 2026. Rank among all banks with branches in that county.
Branch history since 2016
No change since 2016. The bank has operated 7 branches throughout, with none opened, acquired, closed or sold.
Balance sheet and earnings
Loans by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Commercial real estate | 41% | 38% | |
| 1-4 family residential | 25% | 29% | |
| Consumer | 14% | 4% | |
| Construction and land | 8% | 5% | |
| Business (C&I) | 7% | 12% | |
| Multifamily | 1% | 4% | |
| Farmland | 1% | 3% | |
| Agricultural | 0% | 2% | |
| Other | 3% | 2% |
Deposits by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Other interest-bearing | 53% | 51% | |
| Noninterest-bearing | 27% | 27% | |
| Time deposits | 20% | 22% |
Brokered deposits are 0.0% of deposits (peers 4.0%).
Return on assets
Trailing four quarters, with the peer median.
Credit and capital
| This bank | Peer median | |
|---|---|---|
| Noncurrent loans | 0.65% | 0.63% |
| Net charge-offs, annualized | 0.17% | 0.00% |
| Reserves to loans | 0.77% | 1.20% |
| Leverage ratio | 7.78% | 10.77% |
Noncurrent loans exclude government-guaranteed portions.
Related banks
Similar size in Michigan
Largest competitors in Mackinac County, MI
Figures as of June 30, 2026 from the bank's Call Report, FDIC structure and branch data, and the Federal Reserve. Short link: bankingstats.com/banks/first-national-bank-st-ignace-mi