Lyudinovo is a town and the administrative center of Lyudinovsky District in Kaluga Oblast, Russia, located on the shores of Lake Lompad formed by a dam on the Nepolot River, 188km southwest of Kaluga, the administrative center of the oblast. As of the 2010 Census, its population was 40,530.HistoryThe village of Lyudinovo was first mentioned in 1626. Over time, as its industry developed, it was granted town status in 1938.At the beginning of 18th century a Russian industrialist from Ural, Evdokim Demidov, ordered two dams to be built on the Nepolot river. Two reservoirs were created: upper (Lyudinovskoye) and lower (Sukremlskoye). An iron foundry was built near the Sukremlskoye reservoir in 1738. Ironworks near Lyudinovsky reservoir were built in 1745. Nowadays Lyudinovsky Lokomotive Plant located there. In 1841 the first Russian rails for Nikolaevskaya railway were produced here. In 1857-1858 these works produced vessels for Russian Black Sea Fleet and river vessels. First Russian steamers were built here in 1858.In 1866-1867 first Russian open hearth furnace were built in Lyudinovo ironworks.First Russian commercial steam locomotive was built here in 1879. The peak of the industrial boom was here in 1875-1885 when the government ordered a lot of locomotives and train carriages from the local factories.