Claritas PRIZM® Premier classifies every U.S. household into one of 68 consumer segments based on household preferences for a broad range of products and behaviors. PRIZM Premier offers an extensive set of supplementary market research databases and links to third party data. This allows marketers access to a wealth of research, which can be used to pinpoint the products and services that their best customers are most likely to use. It is the wide scope of PRIZM Premier external links that allows marketers to construct a portrait of their customers. Claritas uses industry standard modeling practices and a minimum number of demographic factors to assign households to a segment. PRIZM Premier was designed to classify households based on consumer purchasing behaviors. Thus, we use data that describe overall life stage such as presence of children and household size. The 14 Social Groups of PRIZM Premier are based on urbanicity and affluence, two important variables used in the creation of PRIZM Premier. Social Groups are fixed by urbanicity measures, but demographics such as income, education, and home value were used to group by affluence. While Social Groups are based on both affluence and the Claritas urbanicity measure, Lifestage Groups account for affluence and a combination of householder age and presence of children. Within three Lifestage classes, the 68 PRIZM Premier segments are divided into 11 Lifestage Groups. PolicyMap aggregated the 68 consumer segments based on key demographic groupings provided by Claritas, including household income, household composition (e.g., presence of children), and age of householder. These demographic categories are not mutually exclusive, meaning they describe the predominant characteristics of each segment rather than strict definitions. To find the overall median income for each category, PolicyMap calculated the median of all the segment-level medians within each group.