As Osprey says, the Wrexham area1841 census is missing. I do have the transcriptions of the listings of Wrexham town. The original lists were found inside a book in a second hand bookshop. Clwyd FHS then produced a booklet transcribed from the lists.
If you think they might be in Wrexham itself, I'll have a look for you.
Gadget
Note - the Wrexham Town transcripts are the only ones available for the wider Wrexham area. There are many threads on here about this.