A C E Credit Union Mason City, Iowa
A C E Credit Union is a state-chartered credit union headquartered in Mason City, IA, established in 1934 (NCUA charter 64323), and it is regulated and insured by the NCUA. At Q2 2026 it reported 762 members and total assets of $7.5M (down 1.5% from Q2 2025), the 54th largest of 65 credit unions headquartered in Iowa. Its net worth ratio was 20.94% at Q2 2026, in the well capitalized band.
Also written as ACE CU
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Data as of · sourced from NCUA 5300 call reports. How we update
- Charter
- State-chartered credit union
- Regulator
- NCUA
- Deposit insurance
- NCUA (NCUSIF)
- NCUA charter number
- 64323
- Headquarters
- Mason City, IA
- Established
- 1934
- Total assets, Q2 2026
- $7.5M
- Assets vs Q2 2025
- -1.5%
- Members, Q2 2026
- 762
- Net worth ratio, Q2 2026
- 20.94%
- Latest call report
- Q2 2026, NCUA 5300 · A C E Credit Union call report
- Asset rank in state
- 54th of 65 in Iowa
- Routing number
- 273975399
- Branches
- 1
It has 23 fewer members than on June 30, 2025 (-2.9%). Its net worth ratio was up 1.40 percentage points from 19.54% on June 30, 2025. Used vehicle loans are its largest loan category, $607K of $1.6M in total loans on its June 30, 2026 filing. Its 60-day delinquency ratio of 0.12% is below the 0.86% median of the 2,162 credit unions with under $100M in assets for Q2 2026. Its 20.94% net worth ratio is above that band's 14.31% median.
Credit unions similar in size in Iowa
Frequently asked about A C E Credit Union
How big is A C E Credit Union?
At Q2 2026 it reported total assets of $7.5M and 762 members.
Where is A C E Credit Union headquartered?
It is headquartered in Mason City, IA, United States.
When was A C E Credit Union founded?
It was established in 1934, per NCUA records.
Is A C E Credit Union FDIC insured?
No. The FDIC insures banks, not credit unions. It is a federally insured credit union (NCUA charter 64323): member shares are insured by the National Credit Union Share Insurance Fund, run by the NCUA, up to $250,000 per member, per insured credit union, for each account ownership category, the same limit the FDIC applies to bank deposits.
Who regulates A C E Credit Union?
It is a state-chartered credit union, supervised by its state credit union regulator and by the NCUA, which insures its shares.
Is A C E Credit Union well capitalized?
Its net worth ratio was 20.94% at Q2 2026, in the well capitalized band. NCUA considers a credit union well capitalized at a net worth ratio of 7% or higher.
What is A C E Credit Union's delinquency ratio?
Its delinquency ratio was 0.12% at Q2 2026: loans 60 or more days past due as a share of total loans.
What is A C E Credit Union's loan-to-share ratio?
Its loan-to-share ratio was 27.59% at Q2 2026: total loans as a share of member shares and deposits.
Credit Union Profile
- Headquarters
- Mason City, IA 50401
- Charter Type
- State-chartered credit union
- Primary Regulator
- NCUA
- Insurance
- NCUSIF
- Established
- 1934
- NCUA Charter #
- 64323
- RSSD ID
- 526199
- Members
- 762
- Potential members
- 1,500
Size & Membership
Profitability
Q2 annualizedCapital & Asset Quality
Peer comparison: credit unions of similar size
It ranks against 2,479 credit unions with under $100M in assets, as of Q2 2026. It is in the top quartile on 3 of 7 ranked measures and in the bottom quartile on 2.
| Metric | This credit union | Peer median | Rank among peers |
|---|---|---|---|
| Net worth ratio Middle half of peers: 11.14% to 19.38% | 20.94% | 14.31% | 79th top |
| Return on assets Middle half of peers: 0.16% to 1.30% | 1.16% | 0.72% | 69th above |
| Return on equity Middle half of peers: 1.04% to 8.69% | 5.52% | 4.74% | 55th above |
| Net interest margin Middle half of peers: 3.31% to 4.53% | 2.71% | 3.93% | under 10th bottom |
| Efficiency ratio Middle half of peers: 68.03% to 91.60% | 57.38% | 79.83% | over 90th top |
| Cost of funds Middle half of peers: 0.37% to 1.23% | 1.55% | 0.78% | 15th bottom |
| Delinquency ratio Middle half of peers: 0.35% to 1.93% | 0.12% | 0.86% | over 90th top |
| Yield on assets Middle half of peers: 4.21% to 5.32% | 4.26% | 4.70% | 28th position only |
| Loan-to-share ratio Middle half of peers: 42.33% to 75.81% | 27.59% | 58.92% | under 10th position only |
Quarterly trends
Last 6 quarters of 5300 filings. Under each chart, Q2 2026 against Q2 2025. How these charts are built
$7.5M total assets against $7.6M; $5.9M total shares and deposits against $6.1M; $1.6M total loans against $1.7M.
$1.6M net worth against $1.5M.
20.94% net worth ratio against 19.54%.
27.59% loan-to-share ratio against 28.50%.
0.12% delinquency ratio.
1.16% return on assets against 0.98%; 5.52% return on equity against 5.01%.
2.71% net interest margin against 2.59%.
762 members against 785.
Quarterly trend: last 6 quarters
| Quarter | Net worth ratio | ROA | Delinquency | Loan-to-share |
|---|---|---|---|---|
| June 30, 2026 | 20.94% | 1.16% | 0.12% | 27.59% |
| March 31, 2026 | 20.41% | 0.45% | 1.72% | 27.48% |
| December 31, 2025 | 20.34% | 1.39% | — | 27.11% |
| September 30, 2025 | 19.75% | 1.35% | — | 26.82% |
| June 30, 2025 | 19.54% | 0.98% | — | 28.50% |
| March 31, 2025 | 18.94% | 0.89% | — | 28.92% |
Scroll sideways to see every column.
How we read these figures
Glossary: net worth ratio, delinquency, ROA, loan-to-share. The net worth category is ours, from NCUA's 7% well and 6% adequately capitalized cutoffs. It is not NCUA's determination, which can differ. ROA, ROE and margin annualize the quarter; NCUA's Financial Performance Report annualizes the year to date (YTD). Peer rank interpolates size-band percentiles. Methodology.