What is the largest bank headquartered in Iowa?

By total assets, the largest FDIC-insured bank with its main office in Iowa is Principal Bank, with $9.84B in assets.

Checked Oct 26, 2026

Banks in Iowa

FDIC-insured banks and savings institutions with their main office in Iowa, largest first.

Banks: 225
Total assets: $127.8B
Total deposits: $106.6B

Swipe the table sideways to see more columns.

#	Bank	Headquarters	Total assets	Deposits	Offices
1	Principal Bank	Des Moines, IA	$9.84B	$9.26B	1
2	Bankers Trust Company	Des Moines, IA	$7.83B	$6.72B	22
3	Hills Bank and Trust Company	Hills, IA	$4.79B	$3.53B	21
4	West Bank	West Des Moines, IA	$4.03B	$3.35B	12
5	Northwest Bank	Spencer, IA	$3B	$2.62B	22
6	Cedar Rapids Bank and Trust Company	Cedar Rapids, IA	$2.9B	$2.08B	9
7	Quad City Bank and Trust Company	Bettendorf, IA	$2.77B	$2.39B	5
8	Fidelity Bank & Trust	Dubuque, IA	$2.6B	$2.13B	36
9	United Bank of Iowa	Ida Grove, IA	$2.5B	$1.96B	38
10	Bank Iowa	West Des Moines, IA	$2.35B	$1.97B	25
11	Luana Savings Bank	Luana, IA	$2.34B	$1.97B	6
12	Central Bank	Storm Lake, IA	$2.29B	$1.87B	23
13	First Citizens Bank	Mason City, IA	$1.8B	$1.58B	7
14	Community State Bank	Ankeny, IA	$1.75B	$1.26B	10
15	Availa Bank	Carroll, IA	$1.73B	$1.42B	15
16	Lincoln Savings Bank	Reinbeck, IA	$1.71B	$1.47B	16
17	CBI Bank & Trust	Muscatine, IA	$1.7B	$1.44B	24
18	The Security National Bank of Sioux City, Iowa	Sioux City, IA	$1.69B	$1.31B	10
19	Farmers State Bank	Waterloo, IA	$1.6B	$1.26B	8
20	American State Bank	Sioux Center, IA	$1.45B	$1.22B	11
21	Bank Midwest	Spirit Lake, IA	$1.35B	$1.15B	11
22	Capra Bank	Dubuque, IA	$1.34B	$1.11B	5
23	Iowa State Bank	Hull, IA	$1.26B	$873M	14
24	Peoples Bank	Rock Valley, IA	$1.25B	$1.05B	10
25	Pilot Grove Savings Bank	Pilot Grove, IA	$1.22B	$1.08B	17
26	Farmers State Bank	Marion, IA	$1.12B	$919.5M	9
27	First National Bank, Ames, Iowa	Ames, IA	$1.11B	$955.6M	10
28	Visionbank of Iowa	Ames, IA	$896.1M	$758.9M	13
29	BankIowa	Cedar Rapids, IA	$846.2M	$712.7M	13
30	Premier Bank	Rock Valley, IA	$826.5M	$671.7M	6
31	CUSB Bank	Cresco, IA	$812.1M	$699.3M	7
32	Primebank	Le Mars, IA	$800.6M	$692.5M	4
33	Decorah Bank & Trust Company	Decorah, IA	$794.1M	$694.7M	3
34	City State Bank	Norwalk, IA	$787.9M	$693.2M	9
35	First Central State Bank	Dewitt, IA	$772.4M	$595.4M	6
36	Midwest Heritage Bank, FSB	West Des Moines, IA	$768.3M	$649.6M	13
37	Green Belt Bank & Trust	Iowa Falls, IA	$758.7M	$676.6M	9
38	First Bank	Waverly, IA	$739.9M	$619.8M	8
39	Manufacturers Bank & Trust Company	Forest City, IA	$738.2M	$640.4M	9
40	First State Bank	Webster City, IA	$674.3M	$572.2M	8
41	Midstates Bank, National Association	Council Bluffs, IA	$653.9M	$570.2M	10
42	Clear Lake Bank and Trust Company	Clear Lake, IA	$649.3M	$585M	5
43	Marion County State Bank	Pella, IA	$628.6M	$546.6M	5
44	Liberty National Bank	Sioux City, IA	$624.4M	$457.3M	10
45	South Story Bank & Trust	Slater, IA	$623.9M	$491.3M	6
46	GNB Bank	Grundy Center, IA	$621.3M	$498M	10
47	Farmers Trust and Savings Bank	Spencer, IA	$618M	$557.3M	1
48	Farmers & Merchants Savings Bank	Manchester, IA	$616.8M	$516M	7
49	Community Savings Bank	Edgewood, IA	$613.6M	$501.4M	12
50	Peoples Savings Bank	Indianola, IA	$610.4M	$533.7M	8
51	Washington State Bank	Washington, IA	$601.1M	$510.5M	5
52	Citizens State Bank	Monticello, IA	$594.4M	$537.8M	8
53	South Ottumwa Savings Bank	Ottumwa, IA	$565.4M	$473.9M	6
54	Central State Bank	State Center, IA	$557.8M	$465.9M	3
55	Connection Bank	Fort Madison, IA	$540.9M	$452.4M	5
56	First Security Bank and Trust Company	Charles City, IA	$538.2M	$469M	8
57	American Bank, National Association	Le Mars, IA	$533M	$445M	2
58	Peoples Bank	Clive, IA	$529.6M	$464.3M	8
59	The Shelby County State Bank	Harlan, IA	$523.6M	$462.9M	11
60	Iowa Trust & Savings Bank	Emmetsburg, IA	$522M	$396.4M	4
61	Ohnward Bank & Trust	Cascade, IA	$499.1M	$417.6M	6
62	Grinnell State Bank	Grinnell, IA	$498.6M	$346.6M	4
63	TruBank	Indianola, IA	$494.6M	$366.1M	8
64	Security State Bank	Sutherland, IA	$492.3M	$337.3M	5
65	Raccoon Valley Bank	Perry, IA	$486M	$430.2M	4
66	Rolling Hills Bank & Trust	Atlantic, IA	$484.4M	$416.2M	12
67	American Bank and Trust Company, National Association	Davenport, IA	$480.9M	$387.8M	8
68	Home State Bank	Jefferson, IA	$480.7M	$436.9M	2
69	Iowa State Bank	Des Moines, IA	$480.5M	$392M	5
70	Iowa State Bank	Algona, IA	$470.7M	$378.9M	5
71	Northeast Security Bank	Sumner, IA	$461.9M	$379.1M	7
72	NSB Bank	Mason City, IA	$460.8M	$400.6M	6
73	GreatAmerica Bank National Association	Cedar Rapids, IA	$450M	$56.14M	4
74	FreedomBank	Elkader, IA	$433.9M	$367.9M	4
75	TS Bank	Treynor, IA	$432.7M	$387.4M	7
76	Maquoketa State Bank	Maquoketa, IA	$429M	$327.4M	4
77	Waukon State Bank	Waukon, IA	$426.9M	$366.5M	4
78	Farmers Trust and Savings Bank	Buffalo Center, IA	$422.7M	$373.8M	6
79	Central State Bank	Coralville, IA	$419.3M	$344.4M	7
80	Hardin County Savings Bank	Eldora, IA	$402.3M	$324.4M	2
81	The Clinton National Bank	Clinton, IA	$396.4M	$340.7M	9
82	First Iowa State Bank	Albia, IA	$396.1M	$359M	6
83	Iowa State Bank	Clarksville, IA	$392.9M	$339.9M	3
84	First State Bank	Lynnville, IA	$384.2M	$308.1M	7
85	The Libertyville Savings Bank	Fairfield, IA	$384.1M	$299.1M	6
86	Earlham Savings Bank	West Des Moines, IA	$382.5M	$343.9M	9
87	Citizens First Bank	Clinton, IA	$361.3M	$278.7M	3
88	American State Bank	Osceola, IA	$360.8M	$282.8M	4
89	Premier Bank	Dubuque, IA	$357.7M	$304.8M	3
90	Glenwood State Bank	Glenwood, IA	$352.9M	$307.7M	4
91	Iowa State Bank and Trust Company of Fairfield, Iowa	Fairfield, IA	$352.1M	$300.9M	3
92	New Albin Savings Bank	New Albin, IA	$350.6M	$296.6M	1
93	Commercial Savings Bank	Carroll, IA	$348.8M	$292.7M	2
94	Kerndt Brothers Savings Bank	Lansing, IA	$347.2M	$282.8M	6
95	Community State Bank	Spencer, IA	$345.8M	$295.5M	7
96	PCSB Bank	Clarinda, IA	$326.1M	$294M	7
97	Pinnacle Bank	Marshalltown, IA	$324.4M	$268.2M	1
98	First Trust and Savings Bank	Wheatland, IA	$320.6M	$271.6M	8
99	Savings Bank	Primghar, IA	$304.8M	$242.1M	3
100	Community Bank and Trust Company	Muscatine, IA	$303.5M	$280.3M	5
101	Farmers Savings Bank	Colesburg, IA	$299.1M	$260.2M	7
102	Leighton State Bank	Pella, IA	$298.2M	$254.4M	4
103	Crawford County Trust and Savings Bank	Denison, IA	$294.5M	$267.2M	3
104	State Savings Bank	West Des Moines, IA	$291.9M	$222.1M	2
105	United Community Bank	Milford, IA	$290M	$232.7M	5
106	The Home Trust & Savings Bank	Osage, IA	$287.7M	$252.9M	1
107	First Whitney Bank and Trust	Atlantic, IA	$287.5M	$254.8M	2
108	Fairfax State Savings Bank	Fairfax, IA	$287M	$229.5M	3
109	Pioneer Bank	Sergeant Bluff, IA	$282.8M	$243M	4
110	Guthrie County State Bank	Panora, IA	$279.2M	$209.3M	2
111	DeWitt Bank & Trust Co.	Dewitt, IA	$277.3M	$247.7M	2
112	Success Bank	Bloomfield, IA	$277.1M	$236.5M	3
113	Reliance State Bank	Story City, IA	$276.8M	$234.7M	2
114	Iowa State Savings Bank	Creston, IA	$276.5M	$246.2M	3
115	FNB Bank	Fontanelle, IA	$274.6M	$211.3M	5
116	Farmers and Merchants State Bank	Winterset, IA	$271.7M	$241.1M	5
117	Cherokee State Bank	Cherokee, IA	$271.1M	$218.9M	2
118	Mediapolis Savings Bank	Mediapolis, IA	$269.9M	$225.8M	5
119	Freedom Financial Bank	West Des Moines, IA	$269.3M	$206.4M	2
120	Westside State Bank	Westside, IA	$268.7M	$208.4M	6
121	Security Trust & Savings Bank	Storm Lake, IA	$266.4M	$239.4M	3
122	The Citizens First National Bank of Storm Lake	Storm Lake, IA	$256.5M	$210.5M	3
123	Heartland Bank	Somers, IA	$256.1M	$203.7M	5
124	Malvern Bank	Malvern, IA	$253.2M	$217.7M	1
125	Denver Savings Bank	Denver, IA	$250.6M	$186.9M	2
126	First Bank Hampton	Hampton, IA	$240.9M	$208.2M	2
127	United Bank and Trust Company	Hampton, IA	$228.4M	$199.7M	4
128	Charter Bank	Johnston, IA	$227.5M	$203.5M	4
129	Blue Grass Savings Bank	Blue Grass, IA	$225.5M	$185.6M	2
130	WCF Financial Bank	Webster City, IA	$224.4M	$173.7M	3
131	West Iowa Bank	West Bend, IA	$222.1M	$183M	6
132	Farmers State Bank	Northwood, IA	$221.4M	$189.7M	8
133	Bank	Wapello, IA	$217.4M	$193M	7
134	Farmers Savings Bank	Fostoria, IA	$215.3M	$173.7M	3
135	Iowa State Bank	Sac City, IA	$213.3M	$187.5M	3
136	Farmers Savings Bank & Trust	Traer, IA	$212.7M	$192.2M	2
137	Iowa Trust and Savings Bank	Centerville, IA	$210.6M	$142.1M	2
138	Farmers & Merchants Bank & Trust	Burlington, IA	$208.2M	$187M	4
139	State Savings Bank	Bedford, IA	$207.2M	$181.3M	5
140	Houghton State Bank	Red Oak, IA	$204.8M	$169.2M	5
141	Iowa Falls State Bank	Iowa Falls, IA	$201.5M	$162.8M	2
142	Keystone Savings Bank	Marengo, IA	$200.8M	$168.7M	5
143	State Bank & Trust Co.	Nevada, IA	$197.6M	$174.3M	1
144	Chelsea Savings Bank	Belle Plaine, IA	$196.9M	$173.8M	5
145	Mount Vernon Bank and Trust Company	Mount Vernon, IA	$195.5M	$165.7M	1
146	Citizens State Bank	Sheldon, IA	$194.7M	$166.1M	2
147	Security Savings Bank	Gowrie, IA	$193.7M	$161.1M	8
148	Farmers Trust & Savings Bank	Williamsburg, IA	$191.6M	$138.1M	2
149	Peoples Savings Bank	Wellsburg, IA	$189.1M	$142M	3
150	Bellevue State Bank	Bellevue, IA	$187.7M	$156.5M	1
151	Liberty Trust & Savings Bank	Durant, IA	$186.2M	$149.5M	3
152	Danville State Savings Bank	New London, IA	$182.6M	$159M	2
153	St. Ansgar State Bank	Saint Ansgar, IA	$182M	$136.2M	2
154	Atkins Savings Bank & Trust	Atkins, IA	$172.2M	$146.2M	1
155	Templeton Savings Bank	Templeton, IA	$169.6M	$141.9M	2
156	Union State Bank	Greenfield, IA	$168.7M	$142.5M	4
157	Bank 1st	West Union, IA	$166.1M	$128.6M	3
158	Citizens Savings Bank	Anamosa, IA	$165.9M	$151.3M	2
159	Boone Bank & Trust Co.	Boone, IA	$156.9M	$143M	2
160	Hiawatha Bank and Trust Company	Hiawatha, IA	$156.9M	$133.9M	3
161	Federation Bank	Washington, IA	$155.8M	$133.8M	4
162	Audubon State Bank	Audubon, IA	$155.3M	$131M	1
163	Citizens Savings Bank	Spillville, IA	$151.1M	$129.2M	3
164	Farmers State Bank	Algona, IA	$150.5M	$130.7M	3
165	Readlyn Savings Bank	Readlyn, IA	$148.3M	$111.6M	2
166	Farmers Trust & Savings Bank	Earling, IA	$148.1M	$134.5M	3
167	Exchange State Bank	Ames, IA	$146M	$117.5M	3
168	Bank Plus	Estherville, IA	$144.6M	$103.4M	4
169	First State Bank	Belmond, IA	$141.7M	$117.8M	1
170	Bridge Community Bank	Mount Vernon, IA	$141.1M	$116.7M	3
171	Farmers Savings Bank	Marshalltown, IA	$140.3M	$115.3M	3
172	Community Bank	Dunlap, IA	$138.3M	$122.7M	7
173	Corydon State Bank	Corydon, IA	$138M	$103.6M	1
174	Citizens State Bank	Wyoming, IA	$137.7M	$112M	4
175	Union State Bank	Winterset, IA	$136.5M	$125.3M	3
176	The State Bank of Toledo	Toledo, IA	$134.6M	$120.2M	2
177	Farmers Savings Bank	Wever, IA	$130.5M	$111M	3
178	First State Bank	Stuart, IA	$129.7M	$114M	4
179	Cedar Valley Bank & Trust	La Porte City, IA	$126.3M	$114.5M	2
180	First State Bank	Britt, IA	$125.9M	$102.8M	2
181	Pocahontas State Bank	Pocahontas, IA	$122.6M	$83.05M	2
182	Farmers and Merchants Savings Bank	Iowa City, IA	$122.5M	$102.7M	4
183	Solon State Bank	Solon, IA	$122.5M	$90.31M	3
184	United Bank & Trust Co.	Marshalltown, IA	$120.1M	$106.7M	2
185	Security State Bank	Radcliffe, IA	$119M	$109M	4
186	Twin Cedars Bank	Bussey, IA	$118.3M	$104.7M	4
187	First Community Bank	Newell, IA	$115.7M	$97.76M	4
188	Security State Bank	Algona, IA	$109.8M	$79.66M	4
189	FNNB Bank	Newton, IA	$109.5M	$89.26M	1
190	White State Bank	South English, IA	$109M	$96.4M	3
191	Maynard Savings Bank	Maynard, IA	$108.4M	$88.18M	3
192	Breda Savings Bank	Breda, IA	$106M	$84.66M	1
193	Sibley State Bank	Sibley, IA	$104.4M	$91.5M	1
194	Community Bank of Oelwein	Oelwein, IA	$95.04M	$75.01M	1
195	Sanborn Savings Bank	Sanborn, IA	$92.73M	$66.62M	1
196	Logan State Bank	Logan, IA	$92.18M	$83.56M	2
197	The State Bank	Spirit Lake, IA	$88.35M	$80.26M	2
198	The First National Bank of Manning	Manning, IA	$87.72M	$74.55M	1
199	First Security State Bank	Evansdale, IA	$87.33M	$74.13M	2
200	The Watkins Savings Bank	Watkins, IA	$86.72M	$75.02M	1
201	Tri-Valley Bank	Randolph, IA	$82.75M	$77.41M	4
202	Sloan State Bank	Sloan, IA	$78.9M	$73.77M	2
203	Citizens Savings Bank	Marshalltown, IA	$77.93M	$64.6M	3
204	The Farmers State Bank	Marcus, IA	$77.19M	$67.16M	1
205	State Bank	Spencer, IA	$74.91M	$68.19M	3
206	Farmers State Bank	Yale, IA	$72.65M	$64.21M	1
207	First State Bank	Nashua, IA	$72.46M	$61.7M	1
208	First Heritage Bank	Shenandoah, IA	$72.14M	$59.89M	2
209	First Security Bank	Mapleton, IA	$65.22M	$54.69M	2
210	State Central Bank	Bonaparte, IA	$63.21M	$50.57M	4
211	Montezuma State Bank	Montezuma, IA	$54.6M	$46.16M	1
212	Ashton State Bank	Ashton, IA	$54.53M	$44.55M	1
213	The Exchange State Bank	Springville, IA	$52.73M	$47.94M	2
214	Benton County State Bank	Blairstown, IA	$50.75M	$38.43M	1
215	Palo Savings Bank	Palo, IA	$49.18M	$45.3M	1
216	ITS Bank	Johnston, IA	$45.19M	$500K	1
217	Defiance State Bank	Defiance, IA	$42.62M	$33.54M	2
218	Cornerstone Bank	Clarinda, IA	$42.04M	$34.59M	1
219	Community State Bank	Paton, IA	$41.4M	$33.56M	1
220	State Bank of Schaller	Schaller, IA	$40.62M	$34.94M	1
221	Farmers State Bank	Lake View, IA	$36.68M	$31.48M	1
222	The First National Bank of Primghar	Primghar, IA	$36.34M	$29.91M	1
223	Maxwell State Bank	Maxwell, IA	$31.75M	$27.02M	1
224	American Trust and Savings Bank	Lowden, IA	$27.84M	$23.19M	1
225	Dysart State Bank	Dysart, IA	$16.54M	$13.28M	1

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By county

County	Banks
Polk County	10
Linn County	10
Story County	7
Clay County	5
Carroll County	5
Clinton County	5
Marshall County	5
O'Brien County	5
Johnson County	4
Dubuque County	4
Dallas County	4
Buena Vista County	4
Woodbury County	4
Sioux County	4
Hardin County	4
Bremer County	4
Kossuth County	4
Benton County	4
Scott County	3
Cerro Gordo County	3
Grundy County	3
Black Hawk County	3
Dickinson County	3
Lee County	3
Warren County	3
Marion County	3
Delaware County	3
Jones County	3
Shelby County	3
Allamakee County	3
Page County	3
Guthrie County	3
Sac County	3
Tama County	3
Fayette County	3
Clayton County	2
Muscatine County	2
Plymouth County	2
Winneshiek County	2
Winnebago County	2
Hamilton County	2
Pottawattamie County	2
Washington County	2
Poweshiek County	2
Cass County	2
Greene County	2
Jackson County	2
Jasper County	2
Jefferson County	2
Mills County	2
Crawford County	2
Mitchell County	2
Adair County	2
Madison County	2
Cherokee County	2
Des Moines County	2
Franklin County	2
Iowa County	2
Cedar County	2
Harrison County	2
Osceola County	2
Ida County	1
Howard County	1
Wapello County	1
Floyd County	1
Palo Alto County	1
Monroe County	1
Butler County	1
Clarke County	1
Davis County	1
Union County	1
Calhoun County	1
Worth County	1
Louisa County	1
Appanoose County	1
Taylor County	1
Montgomery County	1
Webster County	1
Henry County	1
Boone County	1
Audubon County	1
Emmet County	1
Wright County	1
Wayne County	1
Hancock County	1
Pocahontas County	1
Keokuk County	1
Fremont County	1
Chickasaw County	1
Monona County	1
Van Buren County	1

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Frequently asked questions

What is the largest bank headquartered in Iowa?: By total assets, the largest FDIC-insured bank with its main office in Iowa is Principal Bank, with $9.84B in assets.

Source: Federal Deposit Insurance Corporation, BankFind Suite · Last updated 06/30/2026

Data sources

BankFind Suite: institutions and financial reportsFederal Deposit Insurance Corporation

Data as of 06/30/2026

See something wrong? Request a correction

Iowa branches

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