Credit Union Routing Number
Great Lakes Credit Union Routing Number
The routing number for Great Lakes Credit Union is 271984832. It is a credit union in Bannockburn, Illinois, NCUA charter 60238.
Data as of · size and membership from the NCUA 5300 call report. How we update
About Great Lakes Credit Union
Great Lakes Credit Union is based in Bannockburn, Illinois, and has been chartered since 1938. It reported $1.43B in assets for Q2 2026, the 10th largest of 185 credit unions headquartered in Illinois and 353rd of 4,252 nationally. Assets were $1.46B a year earlier (Q2 2025), so the credit union is smaller now. It counted 100,624 members on that report. The NCUA lists 21 branch locations for the credit union.
Record
- Routing number
- 271984832
- NCUA charter number
- 60238
- RSSD ID
- 630395
- Headquarters
- Bannockburn, Illinois 60015
- Chartered
- 1938
- NCUA insured since
- April 19, 1971
- Total assets (Q2 2026)
- $1.43B
- Members (Q2 2026)
- 100,624
- Branch locations
- 21
- Routing record refreshed
- October 8, 2026
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Regulator records: NCUA credit union profile (charter 60238) · FFIEC NIC profile (RSSD 630395)