Below is a table of basic statistics for cities and towns along the coast starting with Higashidori at the northeast corner of Aomori Prefecture and running to Tateyama at the southern tip of Chiba Prefecture. The listing is in geographical order north to south.
The main spreadsheet is at Google Docs.
Cities and towns on the coast are highlighted with light blue.
Compiled from http://www.e-stat.go.jp/SG1/estat/eStatTopPortal.do