 On April 19, 1973, Sosnovy Bor was granted town status and became a town of oblast significance, after which it was no longer a part of Lomonosovsky District.Due to high concentration of classified research facilities, nuclear energy industries, and military installations, access to Sosnovy Bor is only by special permit (except for the inhabitants of the town).Within the framework of administrative divisions, it is incorporated as Sosnovoborsky Municipal Formation with Urban Okrug Status—an administrative unit with the status equal to that of the districts.