Bulgaria ~4.997
Roughly ~4.997 people are active on and around AT Protocol in Bulgaria.
Two main numbers
How we estimate this
AT Protocol has no country field, so we cannot count directly. We measure posting activity per language across Europe, weight each language to the countries where its speakers live, and calibrate the whole model to the Dutch figure on atproto.nl. Language only feeds the estimate; it never confirms that an account belongs to Bulgaria.
What we can stand behind
15 accounts we can place in Bulgaria for certain, each from a deliberate signal. The real number is higher, which is what the estimate models.
Where these accounts come from
Those 15 accounts by the signal that placed each one. Every account is counted once, under its strongest signal.
What it cannot see
People who post mainly in English are invisible to a language model, so an English-first account in Bulgaria is not captured, which is part of why the real number sits above the confirmed floor.
Updated 2026-09-15.
Nobody runs a community for Bulgaria yet
Would you like to run one? There are 15 accounts here already, and this page is the only thing standing in for a community that should be run by people who live there.
We can hand over the data behind this page, the collectors that produce it, and the site itself, which is open source. What we cannot do is be from Bulgaria.
Interested? Ping @gui.do.