According to the Labor Force Survey [Link] of Ministry of Public Management, Home Affairs, Posts and Telecommunications, Fukushima population of over 15 years old decreased by 30,000 from the first quarter of 2011 to the one of 2012. This is the largest decreasing range among 3 prefectures in the disaster area.
The graph below shows the decreasing percentage compared with the corresponding quarter of a year earlier.
3 prefectures in the disaster area, Iwate, Miyagi, Fukushima, also Tokyo and Okinawa are compared in the same graph.
Okinawa is the remote island far south to the main island.
Tokyo and Okinawa are almost stable. All of the 3 prefectures are in decreasing trend but the decreasing percentage of Fukushima is recognizable.
The graph below shows the percentage of decrease / increase of the population over 15 years old from the first quarter of 2011 to the one of 2012.
All the prefectures are compared in the same graph, the biggest decrease is Fukushima. The second biggest decrease is Iwate.
The biggest increase is Okinawa.