Great Lakes Credit Union Bannockburn, Illinois
Great Lakes Credit Union is a state-chartered credit union headquartered in Bannockburn, IL, established in 1938 (NCUA charter 60238), and it is regulated and insured by the NCUA. At Q2 2026 it reported 100,624 members and total assets of $1.43B (down 2.0% from Q2 2025), the 10th largest of 185 credit unions headquartered in Illinois. Its net worth ratio was 9.07% at Q2 2026, in the well capitalized band.
Also written as Great Lakes CU · Trade name filed with the NCUA: GLCU
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Data as of · sourced from NCUA 5300 call reports. How we update
- Charter
- State-chartered credit union
- Regulator
- NCUA
- Deposit insurance
- NCUA (NCUSIF)
- NCUA charter number
- 60238
- Headquarters
- Bannockburn, IL
- Established
- 1938
- Total assets, Q2 2026
- $1.43B
- Assets vs Q2 2025
- -2.0%
- Members, Q2 2026
- 100,624
- Net worth ratio, Q2 2026
- 9.07%
- Latest call report
- Q2 2026, NCUA 5300 · Great Lakes Credit Union call report
- Asset rank in state
- 10th of 185 in Illinois
- Routing number
- 271984832
- Branches
- 21
It has 10,279 fewer members than on June 30, 2025 (-9.3%). Its net worth ratio was up 0.31 percentage points from 8.76% on June 30, 2025. 1- to 4-family residential and other consumer real estate loans are its largest loan category, $732.8M of $1.09B in total loans on its June 30, 2026 filing. Its 60-day delinquency ratio of 1.26% is above the 0.68% median of the 454 credit unions with $1B to $10B in assets for Q2 2026. Its 9.07% net worth ratio is below that band's 10.89% median.
Credit unions similar in size in Illinois
Credit unions merged into Great Lakes Credit Union
East Chicago Fireman's Credit Union (2025) · Chicago Municipal Employees Credit Union (2025) · Encurage Financial Network Credit Union (2024) · North Side Community Federal Credit Union (2019) · Phone-Co Credit Union (2015) · Bell West Community Credit Union (2015) · McHenry County Federal Credit Union (2015) · Flossmoor Credit Union (2014)
Frequently asked about Great Lakes Credit Union
How big is Great Lakes Credit Union?
At Q2 2026 it reported total assets of $1.43B and 100,624 members.
Where is Great Lakes Credit Union headquartered?
It is headquartered in Bannockburn, IL, United States.
When was Great Lakes Credit Union founded?
It was established in 1938, per NCUA records.
Is Great Lakes Credit Union FDIC insured?
No. The FDIC insures banks, not credit unions. It is a federally insured credit union (NCUA charter 60238): member shares are insured by the National Credit Union Share Insurance Fund, run by the NCUA, up to $250,000 per member, per insured credit union, for each account ownership category, the same limit the FDIC applies to bank deposits.
Who regulates Great Lakes Credit Union?
It is a state-chartered credit union, supervised by its state credit union regulator and by the NCUA, which insures its shares.
Is Great Lakes Credit Union well capitalized?
Its net worth ratio was 9.07% at Q2 2026, in the well capitalized band. NCUA considers a credit union well capitalized at a net worth ratio of 7% or higher.
What is Great Lakes Credit Union's delinquency ratio?
Its delinquency ratio was 1.26% at Q2 2026: loans 60 or more days past due as a share of total loans.
What is Great Lakes Credit Union's loan-to-share ratio?
Its loan-to-share ratio was 89.93% at Q2 2026: total loans as a share of member shares and deposits.
Credit Union Profile
- Headquarters
- Bannockburn, IL 60015
- Charter Type
- State-chartered credit union
- Primary Regulator
- NCUA
- Insurance
- NCUSIF
- Established
- 1938
- NCUA Charter #
- 60238
- RSSD ID
- 630395
- Members
- 100,624
- Potential members
- 7,125,000
Size & Membership
Profitability
Q2 annualizedCapital & Asset Quality
Peer comparison: credit unions of similar size
It ranks against 454 credit unions with $1B to $10B in assets, as of Q2 2026. It is in the top quartile on 0 of 7 ranked measures and in the bottom quartile on 4.
| Metric | This credit union | Peer median | Rank among peers |
|---|---|---|---|
| Net worth ratio Middle half of peers: 9.81% to 12.63% | 9.07% | 10.89% | 12th bottom |
| Return on assets Middle half of peers: 0.59% to 1.25% | 0.49% | 0.89% | 20th bottom |
| Return on equity Middle half of peers: 5.37% to 10.92% | 5.40% | 8.07% | 25th below |
| Net interest margin Middle half of peers: 3.05% to 3.80% | 3.49% | 3.45% | 53rd above |
| Efficiency ratio Middle half of peers: 63.16% to 77.23% | 82.14% | 70.59% | 11th bottom |
| Cost of funds Middle half of peers: 1.37% to 1.99% | 1.93% | 1.68% | 30th below |
| Delinquency ratio Middle half of peers: 0.45% to 1.05% | 1.26% | 0.68% | 18th bottom |
| Yield on assets Middle half of peers: 4.70% to 5.46% | 5.42% | 5.12% | 72nd position only |
| Loan-to-share ratio Middle half of peers: 78.23% to 95.19% | 89.93% | 88.03% | 57th position only |
Quarterly trends
Last 6 quarters of 5300 filings. Under each chart, Q2 2026 against Q2 2025. How these charts are built
$1.43B total assets against $1.46B; $1.21B total shares and deposits against $1.23B; $1.09B total loans against $1.12B.
$129.9M net worth against $128.2M.
9.07% net worth ratio against 8.76%.
89.93% loan-to-share ratio against 90.83%.
1.26% delinquency ratio against 1.17%.
0.49% return on assets against 0.69%; 5.40% return on equity against 7.86%.
3.49% net interest margin against 2.91%.
100,624 members against 110,903.
Quarterly trend: last 6 quarters
| Quarter | Net worth ratio | ROA | Delinquency | Loan-to-share |
|---|---|---|---|---|
| June 30, 2026 | 9.07% | 0.49% | 1.26% | 89.93% |
| March 31, 2026 | 8.89% | 0.27% | 0.82% | 87.22% |
| December 31, 2025 | 9.04% | 0.10% | 1.46% | 91.44% |
| September 30, 2025 | 9.11% | 0.44% | 1.15% | 91.56% |
| June 30, 2025 | 8.76% | 0.69% | 1.17% | 90.83% |
| March 31, 2025 | 8.17% | 0.32% | 0.92% | 89.86% |
Scroll sideways to see every column.
Watch flags
Loans 60+ days delinquent exceed 1% of the loan book, above the typical credit-union range. Worth watching the trend in coming quarters. BankRegReports early-warning band.
How we read these figures
Glossary: net worth ratio, delinquency, ROA, loan-to-share. The net worth category is ours, from NCUA's 7% well and 6% adequately capitalized cutoffs. It is not NCUA's determination, which can differ. ROA, ROE and margin annualize the quarter; NCUA's Financial Performance Report annualizes the year to date (YTD). Peer rank interpolates size-band percentiles. Methodology.