Credit Union Routing Number
Alliant Credit Union Routing Number
The routing number for Alliant Credit Union is 271081528. It is a credit union in Chicago, Illinois, NCUA charter 67955.
Data as of · size and membership from the NCUA 5300 call report. How we update
About Alliant Credit Union
Alliant Credit Union is based in Chicago, Illinois, and has been chartered since 1900. It reported $20.01B in assets for Q2 2026, the 1st largest of 185 credit unions headquartered in Illinois and 11th of 4,252 nationally. Assets were $19.95B a year earlier (Q2 2025), so the credit union is larger now. It counted 953,370 members on that report. The NCUA lists 1 branch location for the credit union.
Record
- Routing number
- 271081528
- NCUA charter number
- 67955
- RSSD ID
- 367392
- Headquarters
- Chicago, Illinois 60666
- Chartered
- 1900
- NCUA insured since
- November 24, 1992
- Total assets (Q2 2026)
- $20.01B
- Members (Q2 2026)
- 953,370
- Branch locations
- 1
- Routing record refreshed
- October 8, 2026
Routing numbers in Chicago, IL
- Bank
- BMO Bank N.A.: 071000288
- Bank
- The Northern Trust Company: 071000152
- Bank
- CIBC Bank USA: 071006486
- Bank
- Byline Bank: 071001533
- Bank
- Wintrust Bank, N.A.: 071925444
- Bank
- Lakeside Bank: 071001504
- Bank
- Beverly Bank & Trust Company, N.A.: 071026356
- Bank
- Marquette Bank: 071004284
View Alliant Credit Union's full profile →
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Regulator records: NCUA credit union profile (charter 67955) · FFIEC NIC profile (RSSD 367392)