FDIC-insured bank
American Bank, National Association — Le Mars, IA
Bank headquartered in Le Mars, Iowa, part of AMBANK CO INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 234 5th Ave Sw Le Mars, IA 51031 |
| County | Plymouth |
| Website | www.am-bank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 5800 |
| Federal Reserve RSSD ID | 345345 |
| Status | Active |
| Charter class | N (OCC) |
| Holding company | AMBANK CO INC |
| Domestic offices | 2 |
| Financials as of | June 30, 2026 |
How to find your American Bank, National Association routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.am-bank.com.
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Offices nearest to headquarters
| American Bank, National Association main office Le Mars, IA |
234 5th Ave Sw, 51031 |
| Remsen Branch Remsen, IA |
400 W Hwy 3, 51050 |
Where American Bank, National Association has offices
Cities with the most American Bank, National Association offices
Other banks headquartered in Le Mars
| Primebank | $800.58 million |
Largest banks headquartered elsewhere in Iowa
| Principal Bank Des Moines | $9.84 billion |
| Bankers Trust Company Des Moines | $7.83 billion |
| Hills Bank and Trust Company Hills | $4.79 billion |
| West Bank West Des Moines | $4.03 billion |
| Northwest Bank Spencer | $3 billion |
| Cedar Rapids Bank and Trust Company Cedar Rapids | $2.90 billion |
| Quad City Bank and Trust Company Bettendorf | $2.77 billion |
| Fidelity Bank & Trust Dubuque | $2.60 billion |
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