The preposition till is ubiquitous in informal register of modern English; nonetheless, in formal register it is often replaced with until or to, except in some varieties, such as Indian English. This predisposition is likely influenced by the widespread misapprehension that till is a clipping of until, which it is not (until being an enhanced form of till). The spelling 'til, itself also deprecated by some writers, was born of that same misapprehension.
Til/Till is used quite a bit below the Mason Dixon line on the Eastern coast of the US, often related to time. Wait’ll is super prevalent there in speech.
Interesting
https://en.wiktionary.org/wiki/till
It’s a fairly common. I think YingYang Twins used it in a popular song. “Wait’ll you see this dick”
Til/Till is used quite a bit below the Mason Dixon line on the Eastern coast of the US, often related to time. Wait’ll is super prevalent there in speech.
It’s used pretty widely throughout the country in my experience.