Illinois · IL

    Best Credit Union Mortgage Rates in IllinoisJanuary 1970

    The lowest publicly advertised 30-year fixed rate from a credit union lending in Illinois today is 5.99% — the national average is 6.88%. That's about $84,031 saved over the life of a $400,000, 30-year loan. Rates updated daily. Use the ZIP tool to see which credit unions you can actually join.

    Last updated: Sep 13, 2026

    Eligibility indicates likely eligibility only. Confirm membership and lending availability directly. See our methodology.

    Today's rate snapshot

    Click a card to switch the table below to that loan type.

    30 Year Fixed
    Showing
    5.99%
    lowest of 69
    Median 6.75% · National 6.88%(-89 bps)
    $84,031 saved vs. national on a $400,000, 30-yr loan
    15 Year Fixed
    4.99%
    lowest of 70
    Median 6.25% · National 6.292%(-130 bps)
    $118,427 saved vs. national on a $400,000, 30-yr loan
    5 Year ARM
    5%
    lowest of 46
    Median 6% · National 6.88%(-188 bps)
    $173,435 saved vs. national on a $400,000, 30-yr loan
    FHA 30 Year Fixed
    6.25%
    lowest of 16
    Median 6.438% · National 6.668%(-42 bps)
    $39,513 saved vs. national on a $400,000, 30-yr loan
    VA 30 Year Fixed
    6.125%
    lowest of 17
    Median 6.5% · National 6.461%(-34 bps)
    $31,529 saved vs. national on a $400,000, 30-yr loan

    How rates trended in Illinois

    Daily average across every credit union lending in IL, past 90 days. Dashed line is the national FRED benchmark.

    30 Year Fixed
    IL average vs. national
    Collecting data — the trend chart appears after a few days of tracking.
    15 Year Fixed
    IL average vs. national
    Collecting data — the trend chart appears after a few days of tracking.
    5 Year ARM
    IL average vs. national
    Collecting data — the trend chart appears after a few days of tracking.
    FHA 30 Year Fixed
    IL average vs. national
    Collecting data — the trend chart appears after a few days of tracking.

    Mortgage rates in Illinois

    5.99%
    APR 6.319%
    pts
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    As of Sep 10, 2026
    6.25%
    APR 6.497%
    pts
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    As of Sep 11, 2026
    6.25%
    APR 6.358%
    0.50 pts
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    As of Sep 11, 2026
    6.25%
    APR 6.948%
    0.00 pts
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    As of Sep 11, 2026
    6.375%
    APR 6.535%
    0.00 pts
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    As of Sep 1, 2026
    6.375%
    APR 6.426%
    pts
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    As of Sep 11, 2026
    6.375%
    APR 6.472%
    1.01 pts
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    As of Sep 11, 2026
    6.375%
    APR 6.535%
    0.00 pts
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    As of Sep 11, 2026
    6.375%
    APR 6.415%
    0.00 pts
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    As of Sep 11, 2026
    6.375%
    APR 6.674%
    1.00 pts
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    As of Sep 8, 2026
    6.5%
    APR 6.765%
    1.00 pts
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    As of Sep 11, 2026
    6.5%
    APR 6.695%
    0.00 pts
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    As of Sep 11, 2026
    6.5%
    APR 6.65%
    pts
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    6.5%
    APR 6.774%
    pts
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    As of Sep 11, 2026
    6.5%
    APR 6.588%
    0.75 pts
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    As of Sep 9, 2026
    6.5%
    APR 6.617%
    pts
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    As of Sep 10, 2026
    6.5%
    APR 6.691%
    1.00 pts
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    As of Sep 7, 2026
    6.5%
    APR 6.653%
    0.00 pts
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    As of Sep 9, 2026
    6.625%
    APR 6.826%
    1.00 pts
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    As of Mar 1, 2026
    6.625%
    APR 6.745%
    0.75 pts
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    Showing 20 of 69 credit unions

    Credit unions lending in Illinois

    Membership is open to anyone who lives in the state of Illinois, employees of over 250 affiliated companies or organizations, and family members of current credit union members.

    30 Year Fixed
    5.99%
    Visit lender

    Affinity Federal Credit Union is open to anyone nationwide who makes a one-time $5 donation to the Affinity Foundation or joins a qualifying association. Employees of over 2,000 partner businesses and family members of current members are also eligible to join.

    30 Year Fixed
    6.25%
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    Service Credit Union offers nationwide membership to anyone in the U.S. who joins the American Consumer Council or the Financial Fitness Association for free. It also primarily serves active duty military, veterans, Department of Defense employees, and their families.

    30 Year Fixed
    6.25%
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    Transportation Federal Credit Union is open to employees of the Department of Transportation and various transportation-related agencies. Anyone else in the U.S. can become eligible by joining the American Consumer Council (ACC).

    30 Year Fixed
    6.25%
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    Membership is open to anyone who lives, works, or worships in over 100 communities in the Kankakee, Illinois area, bounded by Route 24, Route 47, I-80, and the Indiana state line.

    30 Year Fixed
    6.375%
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    Membership is open to anyone who lives or works in select counties within Wisconsin or Illinois, including Milwaukee, Racine, Kenosha, and Lake counties.

    30 Year Fixed
    6.375%
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    MIT Federal Credit Union is open to the MIT community, including students, employees, and alumni, as well as several partner organizations like Draper and Lincoln Labs. Anyone else in the U.S. can also qualify for membership by joining the American Consumer Council during the application process.

    30 Year Fixed
    6.375%
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    Healthcare workers and residents of specific parts of DuPage County, Oak Lawn, and Des Plaines are eligible to join. Additionally, anyone nationwide can qualify for membership by making a small donation to Credit Unions for Kids.

    30 Year Fixed
    6.375%
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    Membership is open to those who live or work in Illinois counties Boone, Cook (North of I-55), DeKalb, DuPage, Grundy, Kane, Kendall, Lake, Lee, McHenry, Ogle, Stephenson, Will, and Winnebago. Eligibility also extends to employees of Exelon, Commonwealth Edison, any of their subsidiaries, Northwestern Memorial Healthcare or its subsidiaries, and Northwestern University employees, alumni, or studen

    30 Year Fixed
    6.375%
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    Community Trust Credit Union is open to individuals who live or work in Lake or McHenry Counties in Illinois, or Kenosha County in Wisconsin. Relatives of current members are also eligible to join with a $5.00 minimum deposit.

    30 Year Fixed
    6.375%
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    Eligibility filter

    See which of these credit unions you can join

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    Common questions

    How often are these rates updated?

    Daily. We re-scrape the publicly posted rate pages from every credit union that lends in Illinois every morning.

    Do I need to join before applying?

    Yes — credit unions require membership before closing. Most let you open a share account and apply for a mortgage on the same day.

    Are these APRs or interest rates?

    We display both when the credit union publishes them. See our APR vs. interest rate vs. points guide.

    Why aren't the big banks listed?

    Most large banks don't publish mortgage rates online — they quote per applicant. Credit unions almost always post theirs publicly, which is why they dominate our comparison.

    Nearby states

    Also live: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming