This was due to the efforts of Prince of Kraków and Sandomierz, Boleslaw V the Chaste, as during his reign, several other locations in Lesser Poland were granted town charters in a short period of time (Bochnia and Łagów in 1253; Kraków in 1257; Skaryszew in 1264; Skała in 1267; Koprzywnica in 1268; Jędrzejów and Opatowiec in 1271; Mstow in 1278, Nowe Brzesko in 1279).

On July 28, 1375, Queen Elizabeth of Poland issued a privilege, which allowed the Bishop of Wloclawek to found a new town, located in the area of the village Stary Łagów.

In the early 16th century Łagów emerged as a local center of the glass industry, with three plants established here by bishops Maciej Drzewicki and Jan Karnkowski.

In September 1502 the town, which was part of the Sandomierz Voivodeship, was burned in a Crimean Tatar raid, but it was quickly rebuilt, and exempted from all taxes for the period of 12 years.

The town declined, and following the failed January Uprising, the Russian government reduced it to the status of a village (1869), as a punishment for the support of Polish rebels.

The village, which in the Second Polish Republic belonged to Kielce Voivodeship, was seized by the Wehrmacht on September 7, 1939 (see Invasion of Poland).

In late 1944, Łagów was located along front line, which resulted in almost complete destruction of the village, and the death of some 1,500 residents.