Systematic librarian-led zip code analysis to target underserved communities.

Background: To compare the library's health information service usage area and customer topics with the hospital's reasons for hospitalizations to examine commonalities and explore potential growth opportunities within the community. Case Presentation: Researchers partnered with the hospital for this project. IRB approval was received. Researchers gathered the health information service's 2022 data, which was de-identified. Data analyzed included zip code and customer topics, which were coded according to the hospital's business line, which was defined as why a patient was hospitalized or used the ED. The health information service's business lines were compared with the hospital's business lines. Lastly, researchers also reviewed the hospital's targeted zip codes to see if those overlapped with the top zip codes that utilize the health information service. The top zip codes that used the library's health information service were 37920, 37918, 37917, 37919, and 37876. Usage of the health information service varied across zip codes and topics. The most requested topics for the health information service and reasons for hospitalizations/ED visits were General Medicine in three of the five zip codes. Based on the data's results, librarians performed outreach to organizations in the targeted zip codes to increase visibility of the library's services. Conclusion: The reasons people requested health information from the library aligned with hospitalizations and ED visits in most of the zip codes. Providing further outreach to the hospital's targeted zip codes will benefit both the hospital and the library by increasing usage of the health information service.