ISO 3166-1
🇸🇹 São Tomé and Príncipe
· filed 2026-07-18 · click a code to copy
🇸🇹São Tomé and Príncipe (officially: Democratic Republic of São Tomé and Príncipe) is filed in ISO 3166-1 under alpha-2 code ST, alpha-3 code STP and numeric code 678. Its international dialing code is +239 and its country-code top-level domain is .st. The capital is São Tomé. Region: Africa.
The two-letter code appears in domains, locales (like en-ST), shipping and licence plates; the three-letter code in passports, finance and sport; the numeric code where Latin script is unavailable.