Reducing the per capita carbon footprint associated with household energy consumption is crucial for achieving carbon neutrality in the residential sector. However, existing research on the carbon footprint characteristics of single-person households, which often exhibit inefficient energy consumption, is insufficient. This study, therefore,calculates the summer/winter residential sector carbon footprints based on online surveys and analyzes the differences and determinants of carbon footprints between single-person and multi-person households. The results showed that single-person households in the residential sector have higher per capita carbon footprints during both summer and winter compared to multi-person households. Common determinants of carbon footprints between single-person and multi-person households include residential area in summer and the use of central (or district) heating in winter, with other factors varying between the two household types. The findings emphasize the importance of reducing carbon footprints in single-person households toward achieving carbon neutrality in the residential sector and suggestthat carbon-neutral policies should be differentially applied, considering determinants unique to both single and multi-person households. The study's results are expected to be utilized as foundational data for establishing carbon-neutral master plans.

[Key Words] Carbon Neutrality, Single-person Households, Carbon Footprint Determinants, Multiple Regression Analysis, Analysis of Variance