OpenGov. jp is a public-data information service that makes Japanese government statistics easier to explore through charts, rankings, and searchable data pages. Its coverage spans population and households, the economy, prices, employment and wages, health and welfare, education, public safety, and land, transport, and the environment.

Featured datasets include population estimates, consumer price indexes, retail prices, fuel costs, employment statistics, medical claims data, tourism, and wholesale market prices for seafood and produce. Users can compare regional figures, examine changes over time, and explore information by category, item, age group, or other available breakdowns. The site draws on open data published by Japanese government ministries and agencies, including the Statistics Bureau, the Ministry of Health, Labour and Welfare, and the Ministry of Agriculture, Forestry and Fisheries.

It reports more than 17 datasets, over 50,000 data pages, and support for eight languages. OpenGov. jp is designed to make official statistics more accessible, while noting that accuracy is not guaranteed and directing users to original government sources for the latest authoritative information