How many people own BTC?

I'm quite curious, could you please tell me how many individuals actually own Bitcoin? I've heard so much buzz about it, but I'm not quite sure about its widespread adoption. Is it just a niche market or has it truly penetrated the masses? I'm also interested in knowing if there's any data available on the distribution of BTC ownership, like whether it's mostly concentrated in the hands of a few or is it more evenly spread out? It would be fascinating to understand the demographics and patterns behind BTC ownership. Could you shed some light on this for me?