Postal Symbol Day

What Is Postal Symbol Day?

Every February 8th is "Postal Symbol Day" (〒マークの日, Yūbin Māku no Hi) in Japan. On February 8, 1887, the Ministry of Communications (逓信省, Teishinshō) officially adopted the distinctive 〒 symbol as Japan's universal postal mark. The symbol — resembling a stylized "T" with a horizontal bar, derived from the first letter of "Teishinshō" (逓信省) — was placed on post boxes, post offices, postal vehicles, and eventually on all Japanese addresses as the standard marker for postal codes. The 〒 symbol is one of the most universally recognized symbols in Japan, appearing on every piece of mail and every post box in the country.

The Origin of the 〒 Symbol

The 〒 symbol was derived from "T" — the first letter of "Teishinshō" (逓信省, the Ministry of Communications), which was responsible for postal services. The horizontal bar was added to distinguish it from a simple "T" and to give it a distinctive character. The symbol was designed to be easily recognizable on post boxes and official correspondence. Over the following century, it became so thoroughly embedded in Japanese visual culture that it is now recognized as the universal postal symbol even by people who have no knowledge of its origin.

Postal Codes in Japan

Japan introduced postal codes (〒番号, yūbin bangō) in 1968 — initially 5 digits, later expanded to 7 digits in 1998. The 〒 symbol precedes postal codes on all Japanese addresses, making it instantly identifiable in address formatting. Japan's 7-digit postal code system provides precise geographic resolution — identifying specific city blocks and, in some cases, specific large buildings or organizations — enabling highly efficient automated mail sorting.

The Symbol in Daily Life

The 〒 symbol appears so ubiquitously in Japan that it has transcended its postal function to become a general symbol for "post office" or "mailing" in digital interfaces, maps, and signage. Japan's mapping applications use 〒 as the standard icon for post office locations; post boxes throughout Japan are marked with the symbol; and postal code fields in online forms are labeled with 〒. It is one of the most successful symbol designs in Japanese history.

Fun Facts

• Universal recognition: Surveys in Japan consistently show near-100% recognition of the 〒 symbol across all age groups — making it one of the most universally recognized symbols in Japanese visual culture, comparable to traffic signs in recognition levels.
• Red post boxes: Japan's iconic red cylindrical post boxes (赤ポスト, aka posuto) — replacing the earlier black boxes — became standard from 1901 and remain the standard street-level mail collection boxes today, always marked with the 〒 symbol.