We are a family of three with a small top loading washer. I do an average of 3 loads a week. We use no paper products so that includes toilet wipes, napkins, kitchen and cleaning rags, etc..... When dd was still in cloth, that was 2 more small loads a week.
One load per week is all of the cloth plus all "dirty" whites like undies, t-shirts, and socks. I run the toilet cloth though an extra small hot rinse with soap before adding the rest of the whites. One load a week is for all other clothing. And the last load is actually the once a month 2-load job of all the bath towels and sheets and another once a month 2-load job of rugs, blankets, and misc. stuff.
I cannot imagine how I would ever keep up on laundry with the number of loads some people are reporting here! We 100% line dry and in the winter I have stuff on the inside lines all of the time with only the loads I do. It can take 48 hours for towels to dry!
I would not say we are very "clean" people but we all have a set of "play clothes" that we will wear all week no matter how dirty they get. Any time dd is going out to play she puts them on. Dh and I use them for yard work, cleaning, and anything else potentially dirty. Everything else we all wear can be worn over and over with just the stuff that touches skin (undies, socks, and t-shirts) being washed after each wearing. I have also been known to "spot wash" a lot of my clothing when dd was in the smeary phases of her childhood