Credit Union Routing Number
Diamond Federal Credit Union Routing Number
The routing number for Diamond Federal Credit Union is 303986193. It is a credit union in Tulsa, Oklahoma, NCUA charter 19355.
Data as of · size and membership from the NCUA 5300 call report. How we update
About Diamond Federal Credit Union
Diamond Federal Credit Union is based in Tulsa, Oklahoma, and has been chartered since 1969. It reported $65.5M in assets for Q2 2026, the 28th largest of 51 credit unions headquartered in Oklahoma and 2160th of 4,252 nationally. Assets were $61.0M a year earlier (Q2 2025), so the credit union is larger now. It counted 7,891 members on that report. The NCUA lists 2 branch locations for the credit union.
Record
- Routing number
- 303986193
- NCUA charter number
- 19355
- RSSD ID
- 124483
- Headquarters
- Tulsa, Oklahoma 74116
- Chartered
- 1969
- NCUA insured since
- May 13, 1971
- Total assets (Q2 2026)
- $65.5M
- Members (Q2 2026)
- 7,891
- Branch locations
- 2
- Routing record refreshed
- October 10, 2026
Routing numbers in Tulsa, OK
- Bank
- BOKF, N.A.: 103900036
- Credit union
- Ttcu Federal Credit Union: 303986313
- Bank
- Regent Bank: 103101356
- Bank
- Maplemark Bank: 103913502
- Credit union
- Westreet Federal Credit Union: 303986261
- Bank
- Security Bank: 103102216
- Bank
- Spiritbank: 103110376
- Credit union
- Oklahoma Central Credit Union: 303986096
View Diamond Federal Credit Union's full profile →
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Regulator records: NCUA credit union profile (charter 19355) · FFIEC NIC profile (RSSD 124483)