I am a fifth year Ph.D. student in Mathematics applying for full-time teaching professor and lecturer positions or teaching (non-research) postdocs in the US this year. I will also apply to full-time instructor positions in community colleges or even part-time positions if needed but I am not interested in positions that involve research. I read this post, this post, and this post which are related to job applications but they are focused on research-based positions.
I believe non-research positions are less desired by most PhD graduates, but there are also non-PhD student/post docs applying and there might be fewer positions in total (it is hard for me to know because I've heard that non-research positions are generally posted later than research ones).
I am asking because I want to know whether I should apply to more than 20 positions for lecturers and teaching professors to get at least 1 offer and how many community colleges I should apply to as a backup. I know that the conditions depend a lot on the individual (in my case I have an interactive math teaching website, 5 semesters of instructor of record, 4 semesters of teaching assistant, 2 published papers, and 2 submitted for publication), but I'm hoping to get an estimate on the order of magnitude of the number of applications to know how much time I will need to spend on cover letters.