Southern constituency (Saint Petersburg)

1993–1995: Frunzensky District, Pavlovsk, Pushkinsky District^[2]
The constituency covered southern Saint Petersburg and its inner southern suburbs, including Pushkin and Pavlovsk.

1995–2003: Frunzensky District, Nevsky District (Municipal Okrug 49, Municipal Okrug 50, Obukhovsky, Rybatskoye)^[3]
Following the 1995 redistricting the constituency was significantly changed, losing Pushkin and Pavlovsk to South-Western constituency. This seat instead gained industrial and dense residential areas to the east in Nevsky District from the dissolved South-Eastern constituency.

2003–2007: Frunzensky District, Nevsky District (Municipal Okrug 49, Municipal Okrug 50, Obukhovsky, Rybatskoye, Municipal Okrug 53)^[4]
After the 2003 redistricting the constituency was slightly altered, gaining Municipal Okrug 53 in Nevsky District from Eastern constituency.

2016–2026: Kirovsky District (Avtovo, Knyazhevo, Krasnenkaya Rechka, Morskiye Vorota, Narvsky), Moskovsky District, Pushkinsky District^[5]
The constituency was re-created for the 2016 election but did not retain any of its former territory, losing Nevsky District to Eastern constituency and Frunzensky District – to South-Eastern constituency. This seat instead took most of the eliminated South-Western constituency and part of Kirovsky District from the dissolved Admiralteysky constituency.

Since 2026: Admiralteysky District (Izmaylovskoye, Semyonovsky, Sennoy), Moskovsky District, Pushkinsky District^[6]
The constituency was changed following the 2025 redistricting, swapping its portion of Kirovsky District for eastern Admiralteysky District with Central constituency.