How flag emoji work

There's no single “US flag” character in Unicode. 🇺🇸 is actually two special letters — regional indicators “U” and “S” — that renderers combine into a flag. It's an elegant hack with some quirks.

Regional indicator symbols

Unicode has 26 “regional indicator” letters (🇦–🇿, code points U+1F1E6–U+1F1FF). Put two together that match an ISO country code and supporting devices draw the corresponding flag: 🇫 + 🇷 → 🇫🇷.

Why this design

Encoding hundreds of flags individually — and adjudicating political disputes over them — would be a nightmare. By deferring to ISO country codes and letting fonts supply the artwork, Unicode sidesteps the politics and stays flexible.

Quirks

• Platforms without flag support show two letter-boxes (🇫🇷 → “FR”).
• Some regions/platforms deliberately don't render certain flags.
• Typing three or more regional indicators produces odd partial results.

Frequently asked questions