Banks in Illinois

30 FDIC-insured banks headquartered in Illinois, ranked by total assets.

Illinois is home to 30 FDIC-insured banks holding a combined $643.88B in total assets and approximately $516.66B in deposits (Source: FDIC BankFind). These figures represent banks headquartered in Illinois and may not include all branches of out-of-state banks operating in the state.

BMO Bank is the largest bank headquartered in Illinois with $252.07B in total assets, indicating moderate market concentration among the largest institutions (Source: FDIC BankFind). The mix of national banks, regional institutions, and community banks in Illinois provides consumers with a range of options based on their banking preferences.

Total Banks

Combined Assets

$643.88B

Avg ROA

1.30%

Largest banks in Illinois

BMO Bank

BMO Bank is the largest bank headquartered in Illinois with $252.07B in total assets and 1,007 branches (Source: FDIC BankFind).

The Northern Trust Company

The Northern Trust Company is a major bank headquartered in Illinois with $176.40B in total assets and 65 branches (Source: FDIC BankFind).

CIBC Bank USA

CIBC Bank USA is a major bank headquartered in Illinois with $63.98B in total assets and 23 branches (Source: FDIC BankFind).

Busey Bank

Busey Bank is a major bank headquartered in Illinois with $18.05B in total assets and 80 branches (Source: FDIC BankFind).

Byline Bank

Byline Bank is a major bank headquartered in Illinois with $9.63B in total assets and 56 branches (Source: FDIC BankFind).

Banks headquartered in Illinois

#	Bank	Total Assets	Deposits	ROA	Branches
1	BMO Bank National AssociationChicago	$252.07B	$196.98B	0.95%	1,007
2	The Northern Trust CompanyChicago	$176.40B	$145.22B	1.02%	65
3	CIBC Bank USAChicago	$63.98B	$50.77B	1.47%	23
4	Busey BankChampaign	$18.05B	$15.03B	0.92%	80
5	Byline BankChicago	$9.63B	$7.69B	1.47%	56
6	Wintrust Bank, National AssociationChicago	$9.58B	$8.33B	1.88%	37
7	Lake Forest Bank & Trust Company, National AssociationLake Forest	$9.39B	$7.37B	2.20%	10
8	First American BankElk Grove Village	$8.11B	$5.10B	1.72%	59
9	First Mid Bank & Trust, National AssociationMattoon	$7.90B	$6.46B	1.15%	73
10	Old Second National BankAurora	$6.90B	$5.66B	1.46%	59
11	Midland States BankEffingham	$6.50B	$5.43B	-1.62%	60
12	Hinsdale Bank & Trust Company, National AssociationHinsdale	$6.12B	$4.88B	1.53%	17
13	Northbrook Bank and Trust Company, National AssociationNorthbrook	$5.85B	$4.87B	1.50%	7
14	Morton Community BankMorton	$5.40B	$4.68B	1.54%	50
15	Heartland Bank and Trust CompanyBloomington	$5.07B	$4.37B	1.67%	70
16	State Bank of IndiaChicago	$4.78B	$3.25B	N/A	1
17	Barrington Bank & Trust Company, National AssociationBarrington	$4.77B	$3.67B	1.04%	9
18	Wheaton Bank & Trust, National AssociationWheaton	$4.48B	$3.83B	1.46%	8
19	United Community BankChatham	$4.09B	$3.44B	1.27%	46
20	Carrollton BankCarrollton	$3.81B	$3.49B	1.04%	13
21	Parkway Bank and Trust CompanyHarwood Heights	$3.62B	$2.73B	1.12%	27
22	Village Bank and Trust, National AssociationArlington Heights	$3.50B	$2.87B	1.87%	8
23	St. Charles Bank & Trust Company, National AssociationSaint Charles	$3.45B	$2.92B	1.41%	10
24	Banterra BankMarion	$3.29B	$2.98B	0.81%	42
25	Old Plank Trail Community Bank, National AssociationNew Lenox	$3.27B	$2.84B	1.16%	15
26	Libertyville Bank & Trust Company, National AssociationLibertyville	$3.14B	$2.65B	1.65%	8
27	Lakeside BankChicago	$2.89B	$2.47B	1.64%	11
28	Republic Bank of ChicagoOak Brook	$2.72B	$2.33B	1.27%	19
29	FCB BanksCollinsville	$2.60B	$2.21B	1.62%	20
30	Beverly Bank & Trust Company, National AssociationChicago	$2.52B	$2.13B	1.47%	8

Source: FDIC BankFind, most recent quarterly data. Only includes banks headquartered in Illinois. Data last updated: April 2, 2026.

Credit unions in Illinois

5 credit unions headquartered in Illinois, ranked by total assets. Credit unions are member-owned cooperatives insured by the NCUA.

#	Credit Union	Total Assets	Members	ROA	Branches
1	ALLIANTCHICAGO	$20.27B	923,396	0.56%	N/A
2	CITIZENS EQUITY FIRSTPeoria	$8.28B	418,324	0.77%	N/A
3	BAXTERVernon Hills	$6.34B	368,252	0.72%	N/A
4	STATE FARMBloomington	$5.30B	113,161	0.55%	N/A
5	CONSUMERSlake Forest	$4.50B	279,428	0.65%	N/A

Source: NCUA Quarterly Call Report Data. Only includes credit unions headquartered in Illinois.

How to choose a bank in Illinois

When choosing a bank in Illinois, consider what matters most for your financial needs. Illinois has 30 FDIC-insured banks headquartered in the state, plus additional out-of-state banks with local branches. Each institution offers different strengths in terms of branch access, product variety, and community focus.

Consider whether branch access matters to you. If you prefer in-person banking, look for institutions with branches near your home or workplace. If you primarily use mobile and online banking, you may want to prioritize digital features and compare interest rates, as online-focused banks often offer higher savings APYs.

All banks listed on this page are FDIC-insured, meaning deposits are protected up to $250,000 per depositor, per insured bank, for each account ownership category (Source: FDIC). Beyond FDIC insurance, compare factors such as monthly maintenance fees, ATM networks, minimum balance requirements, and customer service availability. The CFPB recommends comparing at least three institutions before opening a new account.

Compare banks side by side Savings calculators Our methodology

Data Sources

FDIC BankFind: Financial data including total assets, deposits, net income, ROA, and ROE for all FDIC-insured institutions. https://banks.data.fdic.gov/

CFPB Consumer Complaint Database: Consumer complaint data by institution, including complaint volumes, response rates, and top issue categories. https://www.consumerfinance.gov/data-research/consumer-complaints/

Federal Reserve Economic Data (FRED): Interest rate benchmarks including the Federal Funds Rate, Treasury yields, and national savings rate averages. https://fred.stlouisfed.org/

BankRanked is not a bank, credit union, or financial advisor. This content is for educational purposes only and does not constitute financial advice. All data is sourced from publicly available government databases (FDIC, NCUA, CFPB, FRED). Consult a licensed financial professional before making banking decisions.