It was founded at the end of the 13th century[4] and first mentioned in 1348 in the Nikon Chronicle. Aleksin was sacked by Khan Akhmat in 1472 during his invasion of the Grand Duchy of Moscow. Because of its location on the Oka River, it was, for a while, an important inland port. Aleksin was granted town status in 1777.[citation needed]
The town expanded in the 1930s with the construction of a chemical plant.
During World War II, Aleksin was under German occupation from 29 November 1941 until 17 December 1941.[12]
On the night of 8–9 November 2024, during the Russo-Ukrainian War, Ukraine launched a drone attack on the Aleksin Chemical Plant—a subsidiary of state corporationRostec—about 190 km (120 mi) south of Moscow, causing a series of explosions and fires at the plant which manufactures ammunition and explosives for the Russian military. The air raid began around 9 p.m. with explosions reported around 3 a.m. on the 9th November. Cascading explosions at 1 p.m. due to chemicals catching fire from the earlier strikes led to authorities evacuating workers. Operations were halted at the plant. Russian sources did not acknowledge the attacks success, "as is common following a reported attack by Ukraine on one of [Russia's] military sites."[13][14]
^ abLaw #954-ZTO defines a town under district jurisdiction as a town which is a part of one of the districts of the oblast.
^ abcOKATO lists 1 town, 1 work settlement, and 154 rural localities in Aleksinsky District. The town of Aleksin and 154 rural localities are listed as a part of Aleksin Urban Okrug in Law #2140-ZTO.
^ abГеоргий Михайлович Лаппо (2003). Энциклопедия Города России. Moscow: Большая Российская Энциклопедия. p. 18. ISBN5-7107-7399-9.
Тульская областная Дума. Закон №954-ЗТО от 27 декабря 2007 г. «Об административно-территориальном устройстве Тульской области», в ред. Закона №2131-ЗТО от 11 июня 2014 г. «О внесении изменений в Закон Тульской области "Об административно-территориальном устройстве Тульской области" и Закон Тульской области "Об установлении границ административно-территориальных единиц – районов в городе Туле"». Вступил в силу по истечении десяти дней после дня официального опубликования. Опубликован: "Вестник Тульской областной Думы", №11–12(142–143), часть 4, ноябрь–декабрь 2007 г.. (Tula Oblast Duma. Law #954-ZTO of December 27, 2007 On the Administrative-Territorial Structure of Tula Oblast, as amended by the Law #2131-ZTO of June 11, 2014 On Amending the Law of Tula Oblast "On the Administrative-Territorial Structure of Tula Oblast" and the Law of Tula Oblast "On Establishing the Borders of the Administrative-Territorial Units–the Districts in the City of Tula". Effective as of the day which is ten days after the official publication date.).
Тульская областная Дума. Закон №2140-ЗТО от 11 июня 2014 г. «О преобразовании муниципальных образований, расположенных на территории Алексинского района Тульской области», в ред. Закона №2182-ЗТО от 30 сентября 2014 г. «О внесении изменения в статью 5 Закона Тульской области "О преобразовании муниципальных образований, расположенных на территории Алексинского района Тульской области"». Вступил в силу по истечении десяти дней после дня официального опубликования. Опубликован: "Сборник правовых актов Тульской области и иной официальной информации", 11 июня 2014 г. (Tula Oblast Duma. Law #2140-ZTO of June 11, 2014 On the Transformation of the Municipal Formations Located on the Territory of Aleksinsky District of Tula Oblast, as amended by the Law #2182-ZTO of September 30, 2014 On Amending Article 5 of the Law of Tula Oblast "On the Transformation of the Municipal Formations Located on the Territory of Aleksinsky District of Tula Oblast". Effective as of the day following the ten days after the day of the official publication.).