021000021
View detailsBanking at Lambeau Field
Associated Bank's corporate headquarters sits in Green Bay, Wisconsin — a city of roughly 107,000 people that happens to be home to the most storied franchise in professional football. Associated has been the official bank of the Green Bay Packers since 2004, a sponsorship that includes ATMs inside Lambeau Field, co-branded banking products, and a branch built directly into the Lambeau Field Atrium. On game days, the branch handles a predictable surge in cash withdrawals from 80,000 fans who apparently still use cash for brats and beer.
The Packers partnership is more than marketing. It reflects Associated's identity as a distinctly Midwestern institution — the kind of bank that sponsors the local team because it genuinely is the local team's bank. In a region where community ties still drive business relationships, that association carries cultural credibility that advertising can't replicate.
Routing number
Associated Bank's routing number is 075900575. The prefix ties to the Federal Reserve Bank of Chicago, covering all Associated Bank accounts across its Wisconsin, Illinois, and Minnesota footprint. This applies to ACH transfers, direct deposit, bill pay, and domestic wire transfers. For incoming international wires, the SWIFT code is ASBUS44. Same-day domestic wire cutoff is generally 4:00 PM CT.
Find the routing number in the Associated Bank mobile app under account details, on the bottom-left corner of a check, or through Associated's customer service line. Business clients with treasury management accounts can view routing details in the Associated Connect platform.
A Midwest footprint built on steady acquisition
Associated Banc-Corp was founded in 1861 and has grown into a roughly $40 billion-asset institution through decades of disciplined acquisitions — absorbing smaller community banks and filling in Midwest coverage one county at a time rather than leaping into new markets through transformative mergers. The bank operates over 200 branches with the heaviest concentration in Wisconsin, plus a meaningful commercial banking presence in greater Chicago.
Commercial lending and the Midwest middle market
Associated's sweet spot is the middle-market commercial client: manufacturers, distributors, agricultural operations, and professional services firms with revenues between $10 million and $500 million. Large enough to need sophisticated treasury management and credit facilities, small enough to value a banker who picks up the phone. Associated underwrites deals locally rather than routing through a centralized credit committee, which gives it a speed advantage over national banks in competitive deal situations.
Modern financial tools for Midwest businesses
Associated serves its markets with the personal attention of a genuine community institution. For businesses that need to layer modern expense management on top of their existing banking relationship, Slash provides corporate cards with real-time spend tracking, automated receipt matching, and integrations with the accounting platforms Midwest businesses already use — QuickBooks, Xero, and NetSuite. An operational upgrade that complements a strong local banking relationship rather than replacing it.
