Abstract Background In order to consider future dementia countermeasures in the community, we conducted a survey to understand the characteristics of the elderly living in the community. Methods A self-administered questionnaire survey was conducted in collaboration with Hanno-city, Saitama Prefecture, targeting all persons aged 65 years or older (excluding institutionalized residents) living in Hanno-city (aging rate: 32.0%). The questionnaire items included basic attributes, lifestyle, daily living conditions, and willingness to participate in activities. The survey was sent to 7,133 people, and 3,623 valid responses were received (valid response rate: 50.8%). Results Respondents were 1,135 males (51.2%) and 1,080 females (48.8%); 1,979 (54.6%) were aged 65-74 and 1,644 (45.4%) were aged 75 and over. The proportion of single-person households was 12.1%. 56.1% of the respondents had been living in the community for 30 years or more, and the overall membership rate of the residents’ association was high at 91.0%. A total of 691 (19.1%) of the respondents had seen someone suspected of having dementia. 1,178 (32.5%) answered ‘yes,’ 1,452 (40.1%) answered ‘no,’ and 881 (24.3%) answered ‘don’t know. There were 472 (8.1%) dementia supporters. Conclusions The membership rate of local residents’ associations was high at 91.0%, indicating that the community maintains relatively close relationships with its residents. Based on the National Dementia plan, further consideration will be given to long-term goals such as human resource development for each region and policies to support these goals. Main messages: In a mountainous district with an aging population similar to that of Japan as a whole, only about one-third of the respondents knew of a contact point for dementia-related issues. Based on the National Dementia Plan, the government will consider dementia policies, including long-term goals and policies to support these goals in the community. Key messages • In a mountainous district with an aging population similar to that of Japan as a whole, only about one-third of the respondents knew of a contact point for dementia-related issues. • Based on the National Dementia Plan, the government will consider dementia policies, including long-term goals and policies to support these goals in the community.