MainStreet Bank
Fairfax, Virginia, Fairfax City County
$2.2B in total assets, the 570th largest of 4,309 US banks and 15th of 57 headquartered in Virginia.
- FDIC certificate
- 57742
- Established
- 2004
- Owned by
- Mainstreet Bancshares Inc
- Primary regulator
- FED
- Website
- www.mstreetbank.com
At a glance
Compared with 22 banks headquartered in Virginia with $1 billion to $10 billion in assets, as of June 30, 2026.
| Measure | This bank | Percentile | Peer range, middle 90% | Peer median |
|---|---|---|---|---|
| Total assets | $2.2B | 64% | $1.8B | |
| Loans | $1.9B | 73% | $1.3B | |
| Deposits | $1.9B | 64% | $1.6B | |
| Return on assets | 0.90% | 23% | 1.22% | |
| Net interest margin | 3.63% | 50% | 3.67% | |
| Efficiency ratio | 65.0% | 68% | 59.1% | |
| Equity to assets | 12.47% | 96% | 10.33% | |
| Loans to deposits | 100% | 91% | 89% |
Growth
Total assets grew 5.6% a year over the last 5 years and 15.9% a year over 10 years, without acquisitions.
Where they operate
7 branches in 5 counties.
Largest markets by deposits
| County | Deposits | Market share | Rank |
|---|---|---|---|
| Fairfax City County, VA | $755M | 13.1% | 3 of 12 |
| Fairfax County, VA | $520M | 0.4% | 19 of 38 |
| District Of Columbia County, DC | $430M | 0.8% | 16 of 34 |
| Loudoun County, VA | $198M | 2.1% | 13 of 20 |
| Arlington County, VA | $35M | 0.4% | 22 of 24 |
Deposits by branch from the FDIC Summary of Deposits, June 2026. Rank among all banks with branches in that county.
Branch history since 2016
Net gain of 2 branches since 2016 (5 to 7, +40.0%). 3 opened, 0 acquired, 1 closed or sold.
| Period | What happened | Opened or acquired | Closed or sold | Net change | Branches at end |
|---|---|---|---|---|---|
| Start of 2016 | Starting point | 5 | |||
| 2018 | Opened Leesburg | 1 | 0 | +1 | 6 |
| 2020 | Opened Washington | 1 | 0 | +1 | 7 |
| 2021 | Closed Fairfax | 0 | 1 | −1 | 6 |
| 2026 through Q2 | Opened Middleburg | 1 | 0 | +1 | 7 |
Balance sheet and earnings
Loans by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Commercial real estate | 55% | 36% | |
| Construction and land | 16% | 8% | |
| Multifamily | 12% | 6% | |
| 1-4 family residential | 11% | 31% | |
| Business (C&I) | 3% | 11% | |
| Consumer | 0% | 4% | |
| Farmland | 0% | 2% | |
| Other | 2% | 2% |
Deposits by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Other interest-bearing | 42% | 51% | |
| Time deposits | 40% | 24% | |
| Noninterest-bearing | 19% | 25% |
Brokered deposits are 34.3% of deposits (peers 5.0%).
Return on assets
Trailing four quarters, with the peer median.
Credit and capital
| This bank | Peer median | |
|---|---|---|
| Noncurrent loans | 3.13% | 0.33% |
| Net charge-offs, annualized | 0.03% | 0.06% |
| Reserves to loans | 0.99% | 1.02% |
| Leverage ratio | 12.78% | 10.38% |
Noncurrent loans exclude government-guaranteed portions.
Related banks
Similar size in Virginia
Largest competitors in Fairfax City County, VA
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/mainstreet