摸清人口家底，全国1%人口抽样调查来了！

Core Viewpoint - The 2025 National 1% Population Sampling Survey is a significant national investigation aimed at understanding the changes in population quantity, quality, structure, distribution, and residence since 2020, which will support the development of economic and social planning in China [2][4]. Group 1: Survey Purpose and Importance - The survey is mandated by the National Census Regulations and is conducted in years ending in "5" between two national censuses [4]. - It aims to provide accurate statistical information to formulate national economic and social development plans, improve population development strategies, and enhance support and service systems for population development [4]. Group 2: Public Service and Infrastructure - The survey will help address issues such as educational resource optimization, traffic congestion, public service allocation, and the improvement of elderly care facilities by understanding the needs of the population [5]. - Accurate knowledge of population structure and distribution will facilitate the precise allocation of public resources, enhancing the sense of gain, happiness, and security among the populace [5]. Group 3: Survey Methodology - Approximately 5 million households and 14 million individuals will be sampled for the survey [7]. - Selected households will be visited by government-appointed surveyors, and there will also be an option for self-reporting via mobile devices [8]. Group 4: Data Security and Privacy - The survey emphasizes the protection of personal information and data security, adhering to the Statistical Law of the People's Republic of China [10]. - Measures include ensuring data security during collection, transmission, and processing, with a comprehensive management and audit system in place [10].