As randersen wrote in his posting above, it will vary tremendously from program to program. In my 3 year Podiatric Surgical residency program, several of my past and current co-residents are married and a few even have kids. They do managed to balance their time between work and family life. In my residency program, majority of the time, I am usually at the hospital around 7 am and usually don't get to leave the hospital before 6 pm. Depending on the rotation and how much work I have to do, I will have to come in earlier and leave later. Currenly, all of the residents take call every 3rd night (mon-thurs) and every 3rd weekend (fri-sun). Fortunately, we take call from home because we are on call for two different hospitals. OF course, when we are on call during the weekend, we will have to come in to do patients rounds, work with an attending during office hours on Saturdays, and scrub any weekend cases with both Podaitric Surgeons and Orthopedic Surgeons.
There are some residency programs where you will have to take podiatry call at the hospital (staying over night). As you learn more about the resident's work hours at various residency programs, you will hear about the "80 hours work rule" for residents. The purpose of this "80 hours work rule" is to limit the amount of hours that a resident may work in the hospital to no more than 80 hours per week. Unfortunately, this rule will NOT apply to most of the podiatry residents in residency programs where they take call from HOME. The 80 hours work rule only applies to the number of hours physically working in the hospital. Hence, if you decide to go to a Podiatry residency program where you take call physically in the hospital (staying over night in the hospital), then the 80 hours work rule will apply in that situation.
My recommendation for you is to spend time at various residency programs that you might be interested in. By spending time at that residency program, it will give you a better idea if you will be able to balance residency and family life. Of course, there are always other factors that may affect the ability to balance the family life with residency. Residency programs that are pretty intense might be difficult for someone to balance out their family life and residency. I personally know a few people who ended up getting divorced while doing their residency training in one of those intense residency program.