The Population and Housing Census of Korea is conducted every five years. In the 2010 Census, respondents were offered an internet option(online response system) to complete the form. The performance of the 2010 online response system was a huge success. 47.9% of respondent completed their census forms via internet. The success of the internet option in the 2010 Census can be attributed to several factors. The high level of internet penetration in Korea supported by advanced and modern IT infrastructure could be a potential factor. Active promotion of the internet option could be another factor. Statistics Korea worked closely with local governments to promote the internet option. Census advertising campaigns were launched via TV, radio, and etc. This paper attempts to investigate factors that characterize the respondents who have participated in the internet option for the 2010 Census Korea. The 2010 Census questions from the long form (independent variables) were selected to build a logistic regression model. The response variable is binary (0, 1). It is coded 1 if the household participated in the internet option, otherwise it is coded 0. About 1.79 million households who completed the long form in the 2010 Census were selected for this analysis. The first logit model was built for variables related to households. Then the second logit model was built for variables related to the head of household. This presentation would discuss potential factors that might influence the respondents decision to participate in the internet option. The results suggest which specific households should be targeted for internet option based on socioeconomic backgrounds, education, housing type, regions, etc. By identifying such factors, planners of the next Census could utilize the results of this analysis for planning and improving the internet option in the next 2015 Census.