One American Bank
Headquarters: Centerville, South Dakota
Overview
One American Bank is an FDIC-insured bank headquartered in Centerville, South Dakota. It reported $285.19M in assets and $231.53M in deposits for the period ending June 30, 2026. Bankular currently lists 3 branch locations.
What Bankular checked
These dates identify the official records and review steps supporting this profile.
Quarterly change
What changed since the previous report
March 31, 2026 to June 30, 2026
These comparisons use consecutive official regulatory reporting periods. A change is descriptive and is not a recommendation or safety rating.
Financial indicators
Capital, profitability and credit quality
These are the latest reported capital, profitability and credit-quality measures available for this institution. Read the figures together rather than as a single safety rating.
Locations
Find a branch of One American Bank
49Th St
3310 W 49th St, Sioux Falls, South Dakota, 57106
Full-service branch · Opened May 6, 1996
Main Office
549 Broadway St, Centerville, South Dakota, 57014
Full-service branch · Opened January 1, 1883
Sioux Falls Branch
515 S Minnesota Ave, Sioux Falls, South Dakota, 57104
Full-service branch · Opened November 5, 2012
Financial overview
Latest reported figures
Through June 30, 2026
Financial trends
How the balance sheet has changed
Compare recent quarters to see the direction of assets, deposits and loans.
| Quarter | Assets | Deposits | Net loans | ROA |
|---|---|---|---|---|
| June 30, 2026 | $285.19M | $231.53M | $220.88M | -3.96% |
| March 31, 2026 | $360.32M | $240.56M | $263.68M | -1.94% |
| December 31, 2025 | $356.55M | $234.38M | $272.28M | -1.48% |
| September 30, 2025 | $368.37M | $244.02M | $278.17M | -1.36% |
| June 30, 2025 | $385.15M | $259.53M | $283.52M | -1.65% |
| March 31, 2025 | $385.90M | $259.38M | $290.13M | -1.12% |
| December 31, 2024 | $404.84M | $275.74M | $296.41M | -0.02% |
| September 30, 2024 | $407.46M | $284.27M | $306.05M | -1.72% |
Size and reach
How this institution compares
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More on One American Bank
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Branch locations
3 listed locations.
Explore →Compare this institution
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Explore →State banking market
Explore institutions and deposit-market context in South Dakota.
Explore →Centerville banking market
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Explore →Rankings and research
Place this institution in national and market context.
Explore →Sources and methodology
Review the official sources and reporting periods.
Explore →Frequently asked questions
Is One American Bank federally insured?
Yes. Bankular identifies this institution in FDIC records under certificate 6078.
Where is One American Bank headquartered?
One American Bank is headquartered in Centerville, South Dakota, at 549 Broadway St, Centerville, South Dakota, 57014.
How large is One American Bank?
It reported $285.19M in assets and $231.53M in deposits for the period ending June 30, 2026.
How many locations does One American Bank have?
Bankular currently lists 3 branch locations for this institution.
Data sources and methodology
Bankular combines official regulatory records with institution-published product information. The detailed sources are available below for readers who want to verify a figure.