Share Pinterest Facebook Twitter LinkedIn Yachimata Japan Tourism. Yachimata (八街市 Yachimata-shi?) is a city in northern Chiba Prefecture, Japan. As of April 2012, the city has an estimated population of 72,277 and a population density of 965 persons per km². The total area is 74.87 km². ChibaChiba destinationsChiba tourChiba travelChiba tripChiba vacationHot News TourismtourismTourism videoTourist AttractionYachimata Japan TourismYachimata Japan Tourism videoYachimata Tourism video千葉 Write A CommentYou must be logged in to post a comment.