Credit Union Routing Number
A C E Credit Union Routing Number
The routing number for A C E Credit Union is 273975399. It is a credit union in Mason City, Iowa, NCUA charter 64323.
Data as of · size and membership from the NCUA 5300 call report. How we update
About A C E Credit Union
A C E Credit Union is based in Mason City, Iowa, and has been chartered since 1934. It reported $7.5M in assets for Q2 2026, the 54th largest of 65 credit unions headquartered in Iowa and 3620th of 4,252 nationally. Assets were $7.6M a year earlier (Q2 2025), so the credit union is smaller now. It counted 762 members on that report. The NCUA lists 1 branch location for the credit union.
Record
- Routing number
- 273975399
- NCUA charter number
- 64323
- RSSD ID
- 526199
- Headquarters
- Mason City, Iowa 50401
- Chartered
- 1934
- NCUA insured since
- April 10, 1978
- Total assets (Q2 2026)
- $7.5M
- Members (Q2 2026)
- 762
- Branch locations
- 1
- Routing record refreshed
- October 8, 2026
Routing numbers in Mason City, IA
- Bank
- First Citizens Bank: 073901602
- Bank
- NSB Bank: 073921530
- Credit union
- Cent Credit Union: 273975548
- Credit union
- North Iowa Community Credit Union: 273975564
- Credit union
- Iowa Heartland Credit Union: 273975412
- Credit union
- Gas and Electric Employees Credit Union: 273975467
View A C E Credit Union's full profile →
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Regulator records: NCUA credit union profile (charter 64323) · FFIEC NIC profile (RSSD 526199)