At the emotional, often tearful reunions, North and South Koreans typically meet in the North for two or three days before the South Koreans return home.
The first reunions in 1985 coincided with a short-lived thaw in North-South relations, but they were discontinued for the next 15 years.
A historic inter-Korean summit in 2000 saw the program start again in earnest and an estimated 17,000 people have been reunited since then.
The last such meeting took place in late 2010, before the North’s shelling of Yeonpyeong Island.
Inter-Korean relations have showed signs of improving recently after months of heightened military tensions that followed the North’s nuclear test in February.