1 Stitches in the face take less than a week
According to Webmd stitches in the face are removed from 4 to 5 days. According to other sources it can take up to a week.
2 Stitches in hands and arms take less than 2 weeks
According to Webmd stitches in the hands and arms get removed in 5 to 10 days.
3 Feet, legs, chest, abdomen, and back - 7 to 14 days
According to Webmd wounds in feet, legs, chest, abdomen, and back can take 7-14 days to heal.
4 Wounds over a joint can take up to 2 weeks
According to Webmd wounds over a joint and areas of high stress can take 7-14 days in order to heal. (See What is the difference between a blunt and a joint?)
5 Health conditions can slow down healing
Health conditions such as diabetes can slow down healing of wounds.
6 Infection slows down healing
If the wound got infected the healing process can slow down and it can take longer to heal. (See How to keep my Kidneys Healthy?)