The document provides a detailed survey from Marshall Marketing & Communications ranking the wealthiest zip codes in the Milwaukee area by median household income, with Wales, Brookfield, and Mequon/Thiensville leading the list. It also includes demographic data on survey respondents, including gender, age, education, occupation, and income levels along with insights on consumer behavior and media influence in these affluent areas. Key findings highlight preferences for certain automobile brands, home improvement plans, and the likelihood of medical procedures among residents in these zip codes.