▁to ▁information ▁provided ▁by ▁Ł ód ź ▁city ▁council , ▁the ▁district ▁has ▁a ▁population ▁of ▁around ▁ 6 0 , 0 0 0 ▁people . ▁Ret kin ia ▁is ▁one ▁of ▁ 5 6 ▁districts ▁recognized ▁by ▁the ▁Urban ▁Information ▁System ▁in ▁Ł ód ź , ▁but ▁in ▁terms ▁of ▁municipal ▁administration ▁it ▁is ▁divided ▁into ▁Os ied le ▁Kar ole w - Ret kin ia ▁W sch ód ▁( E astern ▁Ret kin ia , ▁including ▁the ▁district ▁of ▁Kar ole w ) ▁and ▁Os ied le ▁Ret kin ia ▁Zach ód - Sm ul sko ▁( West ern ▁Ret kin ia , ▁including ▁the ▁district ▁of ▁Sm ul sko ). ▁The ▁dominant ▁type ▁of ▁housing ▁in ▁Ret kin ia ▁is ▁P anel ák , ▁built ▁from ▁the ▁year ▁ 1 9 7 2 ▁on . ▁ ▁Name ▁The ▁origin ▁and ▁meaning ▁of ▁the ▁name ▁Ret kin ia ▁is ▁uncertain . ▁It ▁has ▁been ▁suggested ▁that ▁the ▁name ▁origin ates ▁from ▁ret ▁ki ń , ▁an ▁expression ▁gl oss ed ▁as ▁" cast ▁the ▁net ." ▁This ▁could ▁either ▁refer ▁to ▁the ▁act ▁of ▁throwing ▁fish ing ▁n ets ▁( which ▁would ▁suggest ▁that ▁the ▁area ▁was ▁rich ▁in ▁fish ) ▁or ▁to ▁casting ▁away ▁hunting ▁n ets ▁and ▁sett ling ▁down , ▁which ▁would ▁account ▁for ▁the ▁origin ▁of ▁far ming ▁in ▁the ▁area . ▁Ne ither ▁" ret " ▁nor ▁" ki ń " ▁are ▁in ▁use ▁in ▁contemporary ▁Polish , ▁and ▁the ▁et ym ology ▁is ▁a ▁matter