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Banking companies headquartered in Illinois

Tamtam tracks 48 Banking companies headquartered in Illinois. This list ranks all of them by number of employees on LinkedIn, led by BMO U.S., Busey and Federal Reserve Bank of Chicago. Their median headcount is 168. Half of them were founded in 1944 or later. The most common headquarters are Chicago (11), Elk Grove Village (2) and Lake Forest (2).

馃嚭馃嚫 Illinois48 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
BMO U.S.bmo.com

Providing personalized banking solutions through extensive branch network and dedicated team to support customers at every financial life stage.

Banking 馃嚭馃嚫 Chicago 11,608 n/a
2
Buseybusey.com

A financial holding company offering banking, wealth management, and financial technology services with a focus on community development and employee satisfaction

Banking 馃嚭馃嚫 Champaign 1,866 1868
3
Federal Reserve Bank of Chicagochicagofed.org

Support economic growth and financial stability across the Seventh Federal Reserve District, including Iowa, Illinois, Indiana, Michigan, and Wisconsin.

Banking 馃嚭馃嚫 Chicago 1,651 1914
4
First American Bankfirstambank.com

Full-service banking institution providing personalized financial solutions, expert lending, and comprehensive wealth management services to individuals, families, and businesses across multiple locations.

Banking 馃嚭馃嚫 Elk Grove Village 1,250 n/a
5
Old Second National Bankoldsecond.com

This Chicago-area bank with over 150 years of experience prioritizes customer service, financial responsibility, and community growth in the region

Banking 馃嚭馃嚫 Aurora 965 1871
6
Heartland Bank and Trust Companyhbtbank.com

Community bank offering financial services to commercial, retail, and municipal customers in Illinois and eastern Iowa Emphasis on local management and fast, efficient service

Banking 馃嚭馃嚫 Bloomington 899 n/a
7
First Midwest Bankoldnational.com

A merged bank holding company with $46 billion in assets, ranking among the top 35 in the US, maintaining a community banking heritage

Banking 馃嚭馃嚫 Chicago 898 1940
8
GN Bankgnbank.net

Community-focused savings and loan association empowering Black residents with access to mortgage loans and quality housing for educational and employment opportunities

Banking 馃嚭馃嚫 Chicago 781 1934
9
Federal Home Loan Bank of Chicagofhlbc.com

Partner with members in Illinois and Wisconsin to provide competitively priced funding, investment returns, and community support activities.

Banking 馃嚭馃嚫 Chicago 661 1932
10
CEFCUcefcu.com

A credit union based in Peoria, Illinois, offering financial services to employees of Caterpillar Inc and individuals living or working in central Illinois and California counties

Banking 馃嚭馃嚫 Peoria 607 1937
11
Morton Community Bankhometownbanks.com

Financial institution offering a range of banking services, including checking accounts, wealth management, and commercial loans, with a focus on customer relationships and community involvement

Banking 馃嚭馃嚫 Morton 434 n/a
12
Consumers Credit Unionmyconsumers.org

Established in 1930 in Gurnee, IL, Consumers Credit Union is a large credit union with $32 billion in assets, serving over 200,000 members Providing personalized financial services

Banking 馃嚭馃嚫 Lake Forest 368 1930
13
The PrivateBankus.cibc.com

Financial services provider undergoing rebranding from The PrivateBank to CIBC, maintaining the same trusted team and services.

Banking 馃嚭馃嚫 Chicago 328 1991
14
State Street Bank, Quincy, ILstatestreetbank.com

An employee-owned community bank in Quincy, IL providing consumer and corporate banking services, supporting local economy with loans, and promoting community growth

Banking 馃嚭馃嚫 Quincy 326 1890
15
Marquette Bankemarquettebank.com

Community-focused bank with 20 branches in southwest Chicagoland, offering personal financial services, convenient access, and customer rewards programs.

Banking 馃嚭馃嚫 Orland Park 307 1945
16
Banterra Bankbanterra.bank

A banking company providing leading products and services with excellent customer service, serving communities across six states since 1975

Banking 馃嚭馃嚫 Eldorado 307 1975
17
First State Bankfirststatebank.biz

Locally owned community bank offering exceptional products and services to serve the communities through branch visits and online access

Banking 馃嚭馃嚫 Mendota 183 1940
18
First Federal Savings Bankffsbweb.com

A mutually-owned bank established in 1889, serving North Central IL with full-service banking, from checking to home loans Emphasizes customer service

Banking 馃嚭馃嚫 Ottawa 182 1889
19
Parkway Bank & Trust Companyparkwaybank.com

Locally owned financial institution providing a wide range of products and services with a commitment to growth and excellent customer service Member FDIC

Banking 馃嚭馃嚫 Harwood Heights 181 1964
20
ABOCaboc.com

A trusted full-service bank offering commercial and consumer banking products and services including loans, accounts, credit cards, cash management, and trust services

Banking 馃嚭馃嚫 Chicago 179 1922
21
Providence Bank & Trustprovidence.bank

A local community bank focused on serving and building vibrant neighborhoods by prioritizing customer needs and offering meaningful products and services

Banking 馃嚭馃嚫 South Holland 178 2004
22
United Community Banks IL MO FLucbbank.com

Full-service community bank in central Illinois, offering financial solutions and services to individuals, families, and businesses through multiple locations

Banking 馃嚭馃嚫 Chatham 172 1973
23
ABC Bankabcbank.net

A longstanding bank in Chicagoland offering retail, commercial, and wealth management services Stay updated on career opportunities, financial insights, and community involvement

Banking 馃嚭馃嚫 Chicago 169 1891
24
Citizens State Bankcsbnow.com

A full-service, independent, locally-owned community bank offering customized products and services with a commitment to customer satisfaction for over 140 years

Banking 馃嚭馃嚫 Lena 168 1880
25
First Bank of Highland Parkfirstbankhp.com

A privately owned bank focused on building long-term relationships, providing exceptional service, and supporting the community for over 60 years

Banking 馃嚭馃嚫 Highland Park 165 1955
26
Allied First Bank, sb.allliedfirst.com

A community bank serving Oswego and surrounding areas since 1994, offering consumer, commercial, and mortgage banking products with a focus on customer service and community involvement

Banking 馃嚭馃嚫 Oswego 163 1994
27
Sauk Valley Banksaukvalleybank.com

A community bank focused on personalized service and products for customers, while giving back to the community and building strong relationships

Banking 馃嚭馃嚫 Sterling 155 1999
28
BBMC Mortgagemutualmortgage.com

A community banking subsidiary offering mortgage solutions for homebuyers, refinancing options, and dedicated to putting the "Community" back into Community Banking

Banking 馃嚭馃嚫 Chicago 153 1971
29
INB, National Associationinb.com

Personal and commercial banking services including loans, lockbox services, and support for financial transactions, aiming to empower customers and businesses

Banking 馃嚭馃嚫 Springfield 151 1999
30
First Bankers Trust Company, NAfirstbankers.com

A community bank providing a range of banking products and services for personal and business needs FDIC member and Equal Housing Lender

Banking 馃嚭馃嚫 Quincy 150 1946
31
CNB Bank & Trust, N.A.cnbil.com

A community-oriented independent bank with 18 locations in Illinois & Missouri, offering a range of financial services as a Member FDIC and Equal Housing Lender

Banking 馃嚭馃嚫 Carlinville 150 1854
32
Devon Bankdevonbank.com

An independent community bank in Chicagoland since 1945, offering personalized services, home financing, trust, investments, and business financing products

Banking 馃嚭馃嚫 Chicago 146 1945
33
American Community Bank & Trustamcombank.com

A financial institution offering personalized commercial and personal banking services, as well as wealth management solutions, with a strong focus on customer service and innovative financial strategies

Banking 馃嚭馃嚫 Woodstock 88 2000
34
State Bank of The Lakessbotl.com

Financial holding company offering community banking, commercial banking, wealth management, insurance premium financing, mortgage origination, and other financial services in multiple locations

Banking 馃嚭馃嚫 Antioch 81 n/a
35
Hinsdale Bank & Trusthinsdalebank.com

A financial institution offering community and commercial banking, wealth management, insurance premium financing, mortgage origination, and other financial services in several locations

Banking 馃嚭馃嚫 Hinsdale 71 n/a
36
Soy Capital Bank and Trustsoybank.com

A financial services provider in Central Illinois offering personal and business banking, lending, trust services, wealth management, and insurance solutions

Banking 馃嚭馃嚫 Decatur 67 n/a
37
Old Plank Trail Community Bankoldplanktrailbank.com

Financial services company offering traditional banking, wealth management, insurance premium financing, mortgage origination, and personalized banking solutions in several locations

Banking 馃嚭馃嚫 Mokena 66 n/a
38
McHenry Savings Bank (Official Site)mchenrysavings.com

Financial services company providing a wide range of products including loans, mortgages, wealth management, and online banking with a focus on empowering clients

Banking 馃嚭馃嚫 McHenry 56 1955
39
Lake Forest Bank & Trustlakeforestbank.com

This financial holding company offers community and commercial banking, wealth management, insurance premium financing, mortgage origination, and more across various locations

Banking 馃嚭馃嚫 Lake Forest 55 n/a
40
Continental National Bank (now First American Bank)firstambank.com

A financial institution acquired in 2019 that offers a wide range of personal, commercial, and wealth management services, focusing on customer relationships and personalized solutions

Banking 馃嚭馃嚫 Elk Grove Village 53 n/a
41
NB&Texpireddomains.com

A stable financial institution offering full-service banking, loans, wealth management, securities, and community support through various services and local investments

Banking 馃嚭馃嚫 Sycamore 34 n/a
42
The Anna-Jonesboro National Bankajnational.com

A financial institution providing various banking services and products to customers on a national level

Banking 馃嚭馃嚫 Anna 29 1900
43
Countryside Bankbankcountryside.com

A financial holding company providing community and commercial banking, wealth management, insurance premium financing, mortgage origination, and more in multiple locations

Banking 馃嚭馃嚫 Countryside 29 1975
44
Northbrook Bank & Trustnorthbrookbank.com

Financial holding company offering community and commercial banking, wealth management, insurance premium financing, mortgage origination, and other services in the Midwest and Florida

Banking 馃嚭馃嚫 Northbrook 27 n/a
45
Covenant Bankcovenant-bank.com

A financial institution providing various banking services and financial products to individuals and businesses

Banking 馃嚭馃嚫 Chicago 26 n/a
46
Community Bank of Oak Park River Forestbylinebank.com

Locally owned bank providing financial solutions for individuals, businesses, and nonprofits in multiple communities Focus on exceptional products, services, and technology

Banking 馃嚭馃嚫 Oak Park 19 1996
47
Forest Park Bankforestparkbank.com

Financial institution focused on building shareholder value, providing superior service, sustaining leadership, supporting the community, and fostering employee development

Banking 馃嚭馃嚫 Forest Park 17 1943
48
Mazon State Bankmazonstatebank.com

A financial institution offering personal and business online banking, mortgages, home equity loans, wealth management, and investment services

Banking 馃嚭馃嚫 Mazon 13 1944

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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