This study was conducted as part of an effort to vitalize policy information services (POINT) of National Library of Korea, Sejong. The authors examined information behavior and policy information service use behavior of policy information users and checked if there are any differences in information behavior by participants' occupations (public officials, researchers, and librarians). We carried out an online survey and collected 331 completed survey responses. Overall, the most frequently used type of material was research report, followed by journal article and monograph, etc. The participants frequently used search engines and policy information services to acquire policy information. Also, 47.7% of the participants were aware of and had usage experience of POINT. Furthermore, we found statistically significant differences in some aspects of policy information behavior and in perceptions toward POINT across participants' occupations. These findings suggest that National Library of Korea, Sejong needs to improve their services based on a better understanding on target users.