Statistics Day

What Is Statistics Day?

Every October 18th is "Statistics Day" (統計の日, Tōkei no Hi) in Japan. The date commemorates October 18, 1870, when the Meiji government established the first modern statistical office (政表掛, seihyōkakari) within the Grand Council of State (太政官) — marking the beginning of Japan's systematic national statistical system. The day was designated in 1973 to promote statistical literacy and public understanding of how government statistics are compiled and used. Japan's statistical infrastructure is considered among the world's most comprehensive and reliable.

Japan's Statistical Legacy

The Meiji government recognized from the outset that systematic data collection was essential for modern governance — you cannot tax, plan infrastructure, or manage an economy without knowing how many people live where and how they earn their living. Japan's first national census was conducted in 1920, becoming the model for subsequent censuses held every five years. Today, Statistics Bureau Japan (統計局) conducts the national census, business surveys, consumer price index, and dozens of other regular statistical surveys that provide the data foundation for government policy and economic management.

Statistics in Modern Japan

Japan's statistical system covers virtually every aspect of the economy and society: population and demographics, labor force and employment, prices and wages, industrial production, trade, housing, health, crime, education, and more. The statistical data produced by government agencies are freely accessible online and are widely used by researchers, businesses, journalists, and policymakers. Japan's statistical methodology is internationally recognized and regularly reviewed by the IMF, OECD, and other international bodies.

Statistical Literacy as Civic Skill

Statistics Day reflects the view that statistical literacy — the ability to understand, interpret, and critically evaluate quantitative data — is an essential skill for citizens in a data-rich society. Japan's education system has progressively incorporated data literacy into mathematics and social studies curricula, recognizing that sound civic judgment increasingly requires the ability to reason with numbers.

Fun Facts

• Census accuracy: Japan's national census is known for its high response rates and data quality, achieved through a combination of mail surveys, internet submission, and in-person enumeration by neighborhood census-takers (調査員, chōsain).
• e-Stat: Japan's government statistics portal (e-Stat, https://www.e-stat.go.jp) provides free access to virtually all government statistical data in machine-readable formats — one of the world's most comprehensive open government data resources.