Credit Union Routing Number
Saint Mark Credit Union Routing Number
The routing number for Saint Mark Credit Union is 271081243. It is a credit union in Chicago, Illinois, NCUA charter 61566.
Data as of · size and membership from the NCUA 5300 call report. How we update
About Saint Mark Credit Union
Saint Mark Credit Union is based in Chicago, Illinois, and has been chartered since 1955. It reported $472K in assets for Q2 2026, the 171st largest of 185 credit unions headquartered in Illinois and 4184th of 4,252 nationally. Assets were $524K a year earlier (Q2 2025), so the credit union is smaller now. It counted 159 members on that report. The NCUA lists 2 branch locations for the credit union.
Record
- Routing number
- 271081243
- NCUA charter number
- 61566
- RSSD ID
- 1015999
- Headquarters
- Chicago, Illinois 60619
- Chartered
- 1955
- NCUA insured since
- August 1, 1973
- Total assets (Q2 2026)
- $472K
- Members (Q2 2026)
- 159
- Branch locations
- 2
- Routing record refreshed
- October 8, 2026
Routing numbers in Chicago, IL
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- The Northern Trust Company: 071000152
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- CIBC Bank USA: 071006486
- Credit union
- Alliant Credit Union: 271081528
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- Byline Bank: 071001533
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- Wintrust Bank, N.A.: 071925444
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- Lakeside Bank: 071001504
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- Beverly Bank & Trust Company, N.A.: 071026356
View Saint Mark Credit Union's full profile →
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Regulator records: NCUA credit union profile (charter 61566) · FFIEC NIC profile (RSSD 1015999)