Market Intelligence › Chicago-Naperville, IL-IN-WI › Will County

Will County, Illinois, a core county of the Chicago-Naperville, IL-IN-WI market, holds $23.4B in deposits across 34 insured institutions and 158 branches. Old National Bank is the largest deposit holder at 29.8% share. The top three banks hold 59% of deposits, which places the county in the Moderate band. Deposits have grown 28.7% since 2021 while the branch count fell by 9.7%. It produced $38.1B of real gross domestic product in 2024, ranking #122 of the 1,523 ranked counties by economic output.

Economic scale

2024 Real GDP

$38.1B

#122 of 1,523

Population

712,253

#99 of 1,523

GDP per Capita

$53,559

#488 of 1,523

Deposit market

Deposits (SOD, 6/30/26)

$23.4B

#104 of 1,523

Deposits per Capita

$32,808

#318 of 1,523

Deposits per Branch

$148M

#208 of 1,523

Competitive structure

Insured Institutions

#70 of 1,523

Branches per 100k Pop.

22.2

#870 of 1,523

Median Deposits per Institution

$194M

The median deposits booked by a single institution in the county. #366 of 1,523. A lower figure means institutions typically hold smaller deposit positions here; it reflects local deposit presence, not an institution’s overall size. See Community & Regional Bank Share for institution scale.

Community & Regional Bank Share

53.6%

of county deposits held by banks with $100M to $100B in assets. #1,016 of 1,523. A higher share points to a market where small to mid-size institutions, the kind that compete on relationships and local decision-making, hold more ground.

Top-3 Banks’ Deposit Share: Moderate

59%

The combined deposit share of the top three banks by deposits in the county. A lower share means deposits are spread across more institutions.

Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.

Deposit trend

County Deposits (SOD, 2021 to 2026)+28.7% over 5 years

$18.2B

2021

$18.3B

2022

$20.3B

2023

$21.4B

2024

$23.0B

2025

$23.4B

2026

Branches: 175 in 2021 to 158 in 2026. Institutions: 38 to 34. Top-three share: 54% to 59%.

Institutions by deposits

Institution	Deposits	Share	Branches	5‑yr deposits
Old National Bank	$7.0B	29.8%	16	+138%
JPMorgan Chase Bank	$4.1B	17.4%	19	+16%
BMO Bank	$2.8B	12.1%	21	-18%
Old Plank Trail Community Bank	$2.2B	9.4%	9	+61%
PNC Bank	$965M	4.1%	9	+7%
Bank of America	$846M	3.6%	10	-1%
Fifth Third Bank	$706M	3.0%	6	+93%
Busey Bank	$626M	2.7%	6	-18%
The Huntington National Bank	$613M	2.6%	8	+44%
U.S. Bank	$594M	2.5%	8	+49%
Midland States Bank	$305M	1.3%	4	+39%
First American Bank	$283M	1.2%	6	+24%
Old Second National Bank	$250M	1.1%	5	-18%
First Bank of Manhattan	$239M	1.0%	3	+14%
Citibank	$218M	0.9%	1	+10%
First Secure Community Bank	$216M	0.9%	1	+27%
PeopleFirst Bank	$211M	0.9%	2	+22%
Heartland Bank and Trust Company	$177M	0.8%	3	+11%
First Community Bank and Trust	$171M	0.7%	2	+5%
Town Center Bank	$138M	0.6%	2	+20%
Byline Bank	$127M	0.5%	1	no 2021 presence
Marquette Bank	$115M	0.5%	2	-9%
Grundy Bank	$86M	0.4%	1	+1%
Hometown National Bank	$83M	0.4%	1	+32%
Providence Bank & Trust	$74M	0.3%	1	-24%
Republic Bank of Chicago	$64M	0.3%	1	-5%
First Financial Bank	$43M	0.2%	1	-42%
Wheaton Bank & Trust	$41M	0.2%	1	+74%
First Federal Savings Bank	$37M	0.2%	1	+16%
First Secure Bank and Trust Co.	$30M	0.1%	1	no 2021 presence
First Savings Bank of Hegewisch	$23M	0.1%	1	0%
Woodforest National Bank	$13M	0.1%	3	-11%
Midland Federal Savings and Loan Association	$7M	<0.1%	1	-35%
Federated Bank	$4M	<0.1%	1	no 2021 presence

The 34 insured institutions with a branch presence in this county, per the FDIC Summary of Deposits, June 30, 2026. Five-year change compares the same institution’s county deposits in 2021 and 2026. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. “No 2021 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year. Deposit figures are nominal and are not adjusted for inflation.

Part of the Chicago-Naperville market

Will County is one of 19 counties that make up the Chicago-Naperville, IL-IN-WI market, a Combined Statistical Area (ranked #5 of 293 U.S. markets by economic output). It produces 5.1% of the market’s output and holds 3.6% of its deposits.

Measure	Will County	Share of parent market
2024 GDP	$38.1B	5.1%
Deposits	$23.4B	3.6%
Population	712,253	7.1%

View the full Chicago-Naperville market profile →

Recruiting in Will County

Deposits are split among a moderate number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like Will County.

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Deposit trend

Institutions by deposits

Part of the Chicago-Naperville market

Recruiting in Will County

Other counties in the Chicago-Naperville market