This study presents quantitative analyses of the relationships among small-scale urban climatic conditions, residents, perceptions about their living environments, their lifestyles, and domestic energy consumption. The questionnaire surveys were conducted in Fukuoka City and Ohnojyo City for collecting relevant data necessary for the analyses. First, the relationship between the ecological consciousness of the households and their energy consumption in terms of monthly usage of electricity, gas, and kerosene was investigated, and a good correlation was found among these factors. Then, a more detailed analysis using quantification theory III and the multivariate analysis was made in order to take into account the detailed characteristics of the households. It was found that “eco -conscious” households consumed less energy than “eco-indifferent” households.