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Biases in Self-Reports of Zip Codes and Zip +4 in Geodemographic Segmentation

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Abstract

Clustering, or target marketing to a specific geographic segment has become widespread practice over the past decade. Yet, little research has been done to verify the validity of zip code based data generated through survey research. Using data gathered in a national United States mail survey, this research evaluates biases that may occur by demographic category when respondents self-report their zip code and zip code+4 extension. Significant reporting differences with respect to the gender, education level, and age of respondents are revealed. To further explore the issue, the discussion section provides a comparison between zip code+4 self-reporting rates and geodemographic social groups as created by the Claritas PRIZM system. Such comparisons also suggest bias may occur between differing geodemographic segments when zip code information is self-reported.

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© 2015 Academy of Marketing Science

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Gladden, J.M., Milne, G.R., McDonald, M.A. (2015). Biases in Self-Reports of Zip Codes and Zip +4 in Geodemographic Segmentation. In: Sidin, S., Manrai, A. (eds) Proceedings of the 1997 World Marketing Congress. Developments in Marketing Science: Proceedings of the Academy of Marketing Science. Springer, Cham. https://doi.org/10.1007/978-3-319-17320-7_23

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