The area of the district is 982.5 square kilometers (379.3 sq mi).

[3] On the night of 8–9 November 2024, during the Russo-Ukrainian War, Ukraine launched a drone attack on the Aleksin Chemical Plant—part of the state corporation Rostec—in the Aleksinsky District, 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.

"[10][11] Within the framework of administrative divisions, Aleksinsky District is one of the twenty-three in the oblast.

[1] The town of Aleksin serves as its administrative center.

[1] As a municipal division, the territory of the district is split between two municipal formations—Aleksin Urban Okrug,[4] to which the town of Aleksin and 154 of the administrative district's rural localities belong,[5] and Novogurovsky Urban Okrug,[12] which covers the rest of the administrative district's territory, including the work settlement of Novogurovsky.