Great Lakes Credit Union Reviews: Members, Assets and

How to read the Great Lakes Credit Union reviews numbers

Start with one distinction: what we publish for Great Lakes Credit Union are medians, not averages.

A median is the midpoint: half of the institution sits above it and half below. Averages get dragged around by a handful of extreme values — one very expensive property, one unusually large loan, one graduate earning far more than their classmates — so a median is the safer number to plan against. Members of 100,458 and total assets of $1.4 billion.

Treat these as a baseline for opening a savings, checking or CD account, not a quote. Your own position depends on details no dataset holds: credit history, the exact street, the specific product on offer this week.

Why the spread around Great Lakes Credit Union matters

Context does most of the work here. A number is only high or low next to something else, so we publish Great Lakes Credit Union and how it sits inside Illinois against a wider benchmark on the same measure. Branch count of 21 and headquarters of Bannockburn, Illinois.

Small gaps tell you nothing — sampling error alone can produce them. Large gaps almost always have a physical cause: the age of the housing stock, commuting distance, the balance between renters and owners, or a single large employer setting local pay.

That is why a single figure should never carry a decision on its own. Read two or three measures together — what comes in, what housing costs, what is left — and the picture stops being ambiguous.

How Great Lakes Credit Union compares

Comparison is the fastest way to tell a genuinely unusual institution from an ordinary one. We benchmark Great Lakes Credit Union against Illinois and against the national picture on the same definitions, in the same period, so the difference you see is a real difference rather than an artefact of two datasets disagreeing.

Most contradictory statistics you meet online are definition mismatches rather than errors. Gross versus net, occupied versus advertised, applications versus originations: each pair produces a different headline from the same underlying reality.

Any measure the source flags as unreliable is dropped rather than smoothed. That is why some pages carry fewer figures than others: the institution itself is thinly sampled.

Five checks worth running first

None of this needs a spreadsheet. It needs the discipline of checking the same handful of things every time, whether you are opening a savings, checking or CD account for the first time or the fifth.

• Confirm the rate you were quoted is the standard rate, not a promotional tier that resets after a few months.
• Check the minimum balance and the monthly maintenance fee, which can quietly outweigh the interest earned.
• Write down the monthly number you can genuinely cover, not the maximum a lender or admissions office says you qualify for.
• Compare at least three offers. Pricing on the same product varies more between providers than most people expect, and the gap is yours to keep.
• Check the fee schedule and the fine print, not the headline rate — that is where the real cost usually hides.
• Ask what the number looks like in a bad year, not an average one, and make sure the plan still holds.

Common questions

Sources, method and limits

The page is assembled from quarterly regulatory filings, specifically the NCUA Quarterly Call Report (2026-03-31). Nothing here is modelled from a proprietary black box: every figure traces to a published record, and where we derive a ratio we show both inputs so the arithmetic can be checked.

Three limits are worth stating plainly. Survey estimates carry a margin of error that widens as the area gets smaller. Reporting lags mean the most recent period on file is not the present. And a median cannot describe the tails — the cheapest and most expensive ends of any institution sit outside it by definition.

Where a source revises a figure, the revised value replaces the old one rather than sitting alongside it, so the page always reflects the current official position. If you spot a number that looks wrong, it is worth telling us — corrections get made against the source record, not by guesswork.