The Great East Japan Earthquake and the Fukushima nuclear accident had caused long-term and wide-area evacuation nationwide, and the issue of how to support people who “want to return but cannot return” emerged in various places. In this paper, while comparing Saitama and Aichi prefectures, the achievements and issues of wide-area evacuees’ support over the past 10 years have been clarified.

　The two prefectures have some common characteristics. In both the prefectures, private organizations have held exchange meetings, legal counseling / mental care, individual visits, and published information magazines in cooperation with prefectural offices, municipalities, and experts. While providing such support in multiple layers in both the prefectures, it has been also aimed to provide support with as wide a frontage as possible to the evacuees of various backgrounds and positions. The biggest issue, common to both the prefectures, is how long and till when to continue the support for the evacuees.

　However, different local governance was formed depending on the initial response of the prefectural office and the number of evacuees. In Aichi Prefecture, with the background in traditional disaster response and collaborative rule making, support such as establishment of public-build and private office, utilization of evacuee lists, and individual response had been developed. On the other hand, in Saitama Prefecture, in the absence of these conditions, support groups had restrictions on the use of personal information. Another difference is that in Aichi Prefecture, under the scale of about 1,200 evacuees, the construction of macro-meso-level network and micro-level individual support were developed in tandem. In contrast, in Saitama Prefecture, there were more than 7,000 evacuees at the maximum, and it was difficult to discuss the macro-meso-level and micro-level support at the same place.