truestar inc. Polygon・Population Statistics Every year
Summary
This dataset is an analysis dataset for each prefecture created by truestar using the administrative area data (polygon data) from the Ministry of Land, Infrastructure, Transport and Tourism’s National Land Numerical Information and the population statistics data from the national census published by the government’s statistics e-Stat.
For each polygon, the latitude and longitude of the prefectural capital city were obtained from the location information of the municipalities published by the Geospatial Information Authority of Japan and the point data is also provided. However, all islands that do not contain representative points are classified as remote islands.
Features/Usages
We apply a polygon data join process to ensure that each record corresponds to a prefecture code, making it easy to match with statistical data by prefecture. The data includes basic statistics such as population and number of households, enabling hassle-free analysis and visualization of commercial areas at the prefectural level.
There are three types of polygon data: one that generalizes the boundaries of the raw data to make it lighter, one that excludes islands from the generalized data, and one that excludes islands only in Tokyo, which can be used according to the analysis purpose.
Matching with statistical data by prefecture code and sharing with GEOGRAPHY type enables easy mapping using BI or GIS tools.
Sample Data
Data Fields
| RESEARCH_YEAR | |
| PREF_CODE | |
| PREF_NAME | |
|
PREF_NAME_EN PREF_CODE_NAME |
|
| LONGITUDE | |
| LATITUDE | |
| POPULATION | |
| POPULATION_2015 | |
| POPULATION_MALE | |
| POPULATION_FEMALE | |
| NUMBER_OF_HOUSEHOLDS | |
| NUMBER_OF_HOUSEHOLDS_2015 | |
| AREA | |
| POPULATION_DENSITY | |
| POPULATION_CHANGE_LAST_5YEARS | |
| POPULATION_CHANGE_RATE_LAST_5YEARS | |
| HOUSEHOLD_CHANGE_LAST_5YEARS | |
| HOUSEHOLD_CHANGE_RATE_LAST_5YEARS | |
| POINT_JP_PREF | |
| POLYGON_JP_PREF_LIGHT | |
| POLYGON_JP_PREF_2_LIGHT | |
| POLYGON_JP_PREF_3_LIGHT |
References
The data is prepared by truestar, based on the following data.
Administrative Region Data of MLIT’s National Land Numerical Information
“Numerical Map (Basic Land Information)” of the MLIT’s Geospatial Information Authority (Approval (Use) R 4JHs 243 based on the Surveying Law)
https://nlftp.mlit.go.jp/ksj/gml/datalist/KsjTmplt-N03-v3_1.html
Location Information of Municipalities by MLIT’s Geospatial Information Authority
https://www.gsi.go.jp/KOKUJYOHO/center.htm
Basic Collection of Population and Household Statistics from the 2020 Population Census by e-Stat
Table 1-1: Population by Gender, Number of Households by Type of Household and Household Members, Population as of 2015 (Revised), Number of Households as of 2015 (Revised), Population Change over 5 Years, Population Growth Rate over 5 Years, Number of Households Change over 5 Years, Household Growth Rate over 5 Years, Sex Ratio, Area (Reference), and Population Density – Nationwide, by Prefecture, and by Municipality (including municipalities in 2000 (Heisei 12))
Update/Change History
2021/12/10: PREF_FUNDAMENTAL_BETA / Prefectural Basic Data (Beta Version: 2020 National Census Reflected)
2022/1/28: Renamed from PREF_FUNDAMENTALJAPAN_BETA to PREF_00_FUNDAMENTAL, and officially released
2022/9/29: Updated and released administrative area data of the Ministry of Land, Infrastructure, Transport and Tourism’s National Land Numerical Information.