Extraction of the needs related to countermeasures against radioactive contamination was conducted by access analysis of the "Base Information Q&A" site operated by Japan Atomic Energy Agency (JAEA) and text mining of stenographic text data from a briefing on Research and Development by JAEA for local government officials. The results of the access analysis indicated that even after more than 10 years had passed since the Fukushima Daiichi Nuclear Power Plant (1F) accident, there were needs for data and information on the concentration of radiocesium in the environment, and agricultural, forestry, and fishery products and air dose rates used as a degree of radioactive contamination and evidence for the lifting of evacuation orders. The text mining results suggested the needs for data and information on radiocesium concentrations and air dose rates for river systems and aquatic products in the northern part of Hamadori on the Pacific coast, for forested environment and forest products in Nakadori of an inland basin. In the southern part of Hamadori on the Pacific coast the text mining results indicated the needs for decontamination and air dose rates in forests and reservoirs, as well as for monitoring data on changes in air dose rates after decontamination. The needs for information and data based on surveys and monitoring on the current situation of radioactive contamination rather than the future situation were also inferred.