Landmark Credit Union is a not-for-profit financial cooperative owned by our customer/members. We return our profits to our m ... embers with exceptional rates, lower fees and personalized service. We serve all people living or working in Southern and Northeastern Wisconsin, plus Lake and McHenry Counties in Illinois as well as their immediate family members. Landmark also serves businesses with a location in Southern and Northeastern Wisconsin, plus Lake and McHenry Counties in Illinois. Southern Wisconsin includes the following counties: Brown, Calumet, Columbia, Dane, Dodge, Fond Du Lac, Green, Green Lake, Iowa, Jefferson, Kenosha, Manitowoc, Marquette, Milwaukee, Outagamie, Ozaukee, Racine, Rock, Sheboygan, Walworth, Washington, Waukesha, Winnebago. Northeastern Illinois includes the following counties: McHenry and Lake. Federally Insured by NCUA. Equal Housing Opportunity. read more