Credit union

Great Lakes Credit Union

Bannockburn, Illinois, Lake County, IL

$1.4B in total assets and 100,624 members, the 354th largest of 4,298 US credit unions and 10th of 173 headquartered in Illinois.

NCUA charter: 60238
Charter: State chartered (IL)
Chartered: 1938
NCUA insured since: 1971
Low-income designation: Yes
Website: http://www.glcu.org

At a glance

Compared with 11 federally insured credit unions in Illinois with $1 billion to $10 billion in assets, as of June 30, 2026.

Measure	This credit union	Percentile	Peer median
Total assets	$1.4B	27%	$2.3B
Loans	$1.1B	36%	$1.9B
Deposits (shares)	$1.2B	27%	$2.0B
Members	100,624	36%	131,312
Return on assets	0.38%	9%	0.76%
Net interest income to assets	3.34%	46%	3.47%
Efficiency ratio	83.9%	98%	69.7%
Net worth ratio	9.07%	27%	10.25%
Loans to shares	90%	54%	87%
Cost of deposits	1.34%	18%	2.00%

Ratios are annualized from year-to-date figures. Return on assets uses average assets, as NCUA does. Cost of deposits includes dividends on shares.

Growth

Total assets grew 6.9% a year over 10 years and 6.5% a year over the last 5, including 4 mergers in the last 10 years. Membership grew 4.9% a year over 5 years, to 100,624.

Dashed lines mark larger mergers, listed below.

Mergers and acquisitions

Closed	Absorbed	Assets at last filing
Aug 2025	East Chicago Firemen's Credit Union Credit union, East Chicago, IN	$592K
Jan 2025	Chicago Municipal Employees Credit Union Credit union, Chicago, IL	$59M
Jun 2024	Encurage Financial Network Credit Union Credit union, Chicago, IL	$222M
Aug 2019	North Side Community Federal Credit Union Credit union, Chicago, IL	$9M
Dec 2015	Phone-Co. Credit Union Credit union, Chicago, IL	$6M
Aug 2015	Bell West Community Credit Union Credit union, Oak Lawn, IL	$25M
Jun 2015	McHenry County Federal Credit Union Credit union, Crystal Lake, IL	$42M
Nov 2014	Flossmoor Credit Union Credit union, Homewood, IL	$8M
Jan 2014	Bagumbayan Credit Union Credit union, failed, Chicago, IL	$52K
Oct 2013	Chicagoland Electrical Industry Credit Union Credit union, Willow Springs, IL	$14M
Aug 2013	Thornton Township High Schools Credit Union Credit union, South Holland, IL	$9M
Apr 2013	Hawthorne Credit Union Credit union, Naperville, IL	$115M
Mar 2012	Tinley Forest Employees Credit Union Credit union, Oak Forest, IL	$3M
Oct 2011	Federated Family Credit Union Credit union, Milwaukee, WI	$11M
Sep 2011	Chicago Heights Onized Federal Credit Union Credit union, Chicago Hts, IL	$468K
Jun 2011	H - F Credit Union Credit union, Country Club Hi, IL	$20M
May 2011	Local 701 I B E W Federal Credit Union Credit union, Warrenville, IL	$950K

Where they operate

21 branches in 6 counties.

2 of 21 branch locations are approximate (ZIP code centers).

Largest counties by branches

County	Branches	Share of all branches	Rank
Cook County, IL	8	0.6%	23 of 171
Lake County, IL	8	4.0%	9 of 41
Mchenry County, IL	2	2.2%	14 of 31
Dupage County, IL	1	0.4%	32 of 58
Vermilion County, IL	1	3.0%	9 of 19
Will County, IL	1	0.6%	27 of 47

Credit unions do not report deposits by branch, so these are branch counts: this credit union's branches against every bank and credit union branch in the county. Rank is among all banks and credit unions with a branch there.

Branches by year

Year end	Branches	Change
2016	15
2017	12	−3
2018	12	0
2019	13	+1
2020	13	0
2021	13	0
2022	14	+1
2023	15	+1
2024	21	+6
2025	21	0
Jun 2026	21	0

Member-serving offices as listed in NCUA call reports. Changes include branches gained in mergers.

Earnings and credit

Return on assets

Year to date, annualized, with the peer median.

Credit and capital

	This credit union	Peer median
Delinquent loans, 60+ days	1.26%	0.86%
Net worth ratio	9.07%	10.25%
Loans to shares	90%	87%

Delinquent loans are two or more months past due. Net worth is NCUA's capital measure for credit unions.

Credit unions of similar size in Illinois

Most branches in Cook County, IL

Figures as of June 30, 2026 from the credit union's NCUA call report (Form 5300), NCUA's credit union locator and FFIEC merger records.