Originally, the area of the district was populated by
Finnic peoples. In the 11th century, the Slavs began settling there. The area was dependent on the
Novgorod Republic. The
Koporye Fortress, one of the fortresses built by Novgorodians to protect the borders, was mentioned first in 1240. On February 14, 1923 Gatchina was renamed Trotsk, and Gatchinsky Uyezd was renamed Trotsky Uyezd, after
Leon Trotsky. On August 1, 1927, the uyezds were abolished and Oranienbaumsky District, with the administrative center in the town of
Oranienbaum, was established. The governorates were also abolished, and the district was a part of
Leningrad Okrug of
Leningrad Oblast. It included parts of former
Trotsky Uyezd. On July 23, 1930, the okrugs were abolished as well, and the districts were directly subordinated to the oblast. On August 27, 1939
Bolshaya Izhora was made an urban-type settlement, and on September 17, 1939 Oranienbaum became the city of the oblast significance and ceased to be a part of the district. Between August 1941 and January 1944, during
World War II, the western part of the district was occupied by
German troops. The eastern part was not occupied and served as the
Oranienbaum Bridgehead to protect the city of Leningrad. On February 23, 1948 the town of Oranienbaum was renamed Lomonosov to commemorate
Mikhail Lomonosov, and the district was renamed Lomonosovsky. On December 10, 1958
Sosnovy Bor was granted the urban-settlement status. On February 1, 1963 Lomonosovsky District was abolished and merged into Gatchinsky District; on January 13, 1965 it was reestablished. On November 22, 1966
Lebyazhye was granted urban-type settlement status. On April 19, 1973 Sosnovy Bor became a town of oblast significance and ceased to be a part of the district. As a result of a sequence of administrative reforms, the town of Lomonosov was transferred to the federal city of Saint Petersburg, and thus Lomonosovsky District is the only district in Russia which has its administrative center lying in a different federal subject. On August 1, 1927
Detskoselsky District was established as well, with the administrative center in the town of
Detskoye Selo. It was a part of Leningrad Okrug of Leningrad Oblast and included areas formerly belonging to Gatchinsky and Novgorodsky Uyezds. The town of
Slutsk was also a part of the district. On August 19, 1930 the district was abolished and split between Tosnensky,
Krasnogvardeysky, and
Leningradsky Prigorodny Districts. On August 1, 1927
Uritsky District was also established, with the administrative center in the town of
Uritsk. It was a part of Leningrad Okrug of Leningrad Oblast and included areas formerly belonging to Gatchinsky and Leningradsky Uyezds. The town of
Krasnoye Selo was also a part of the district. On August 19, 1930 the district was abolished and merged into Leningradsky Prigorodny District. Leningradsky Prigorodny District was established on August 19, 1930 by merging
Leninsky District, Uritsky District, as well as parts of Detskoselsky,
Kolpinsky, and
Pargolovsky Districts, and the towns of Petergof,
Sestroretsk, and
Shlisselburg. The administrative center of the district was located in
Leningrad. On December 13, 1931 Leningradsky Prigorodny District was subordinated to the city of Leningrad (which was not a part of the district). On August 19, 1936 the district was abolished, and split between the city of Leningrad, and Krasnoselsky,
Slutsky, Pargolovsky,
Vsevolozhsky, and
Mginsky Districts. On August 19, 1936
Krasnoselsky District with the administrative center in the town of
Krasnoye Selo was established on the territories which previously belonged to Leningradsky Prigorodny District. Between August, 1941 and January, 1944 the area of the district was occupied by German troops. On June 12, 1950 some parts of the district, including the town of Uritsk, were transferred to the city of Leningrad. On December 14, 1955 Krasnoselsky District was abolished and merged into Lomonosovsky District. As a result of a sequence of administrative reforms, the town of Krasnoye Selo was transferred to the federal city of Saint Petersburg. ==Restricted access==