A number is already an address. AirTree just files it.

Each value's leading digits are the broad region, its trailing digits the exact street. AirTree files every value into a tree, keeping only the addresses that actually have residents — and counting them as it goes, in a single pass.

One compact structure. Many shapes of question.

Each card below is a real public dataset summarized into a tiny AirTree, then queried live in your browser — every chart is drawn live from the AirTree. Drag the band or hover a cell to query.

Your data stays yours. Every answer is verifiable.

Questions, answered.

How we build, in the open.

The AirMettle engineering blog — where the team writes about the ideas we're inventing, the systems we ship, and the real-world problems they solve. AirTree and AirStat are part of the story, not all of it.