2021年(nian)昆(kun)山市實(shi)現地區生(sheng)產(chan)總值(zhi)(zhi)4748.06億元，按可比(bi)價計算，比(bi)上年(nian)增長(chang)7.8%。其中，第一產(chan)業(ye)增加值(zhi)(zhi)31.18億元，增長(chang)0.6%；第二產(chan)業(ye)增加值(zhi)(zhi)2462.74億元，增長(chang)9.7%；第三產(chan)業(ye)增加值(zhi)(zhi)2254.14億元，增長(chang)5.9%，三次產(chan)業(ye)比(bi)重(zhong)為0.7:51.8:47.5。年(nian)末擁(yong)有市場(chang)主(zhu)(zhu)體(ti)107.77萬戶(hu)，成為全省首個市場(chang)主(zhu)(zhu)體(ti)突(tu)破(po)100萬戶(hu)的(de)縣(xian)級市，新登記市場(chang)主(zhu)(zhu)體(ti)30.56萬戶(hu)。

2021年(nian)(nian)(nian)(nian)昆山市完(wan)(wan)成(cheng)農(nong)林牧(mu)漁業(ye)總(zong)產值53.19億(yi)元(yuan)(yuan)，農(nong)林牧(mu)漁業(ye)增(zeng)加值34.81億(yi)元(yuan)(yuan)。糧食總(zong)產量9.10萬(wan)(wan)噸，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)0.8%。全年(nian)(nian)(nian)(nian)規上工業(ye)總(zong)產值首次(ci)突破(po)萬(wan)(wan)億(yi)元(yuan)(yuan)，達10284.48億(yi)元(yuan)(yuan)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)12.8%。資(zi)質以上建筑(zhu)業(ye)企業(ye)實(shi)現建筑(zhu)業(ye)總(zong)產值379.76億(yi)元(yuan)(yuan)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)19.0%。全年(nian)(nian)(nian)(nian)完(wan)(wan)成(cheng)固定資(zi)產投資(zi)總(zong)額(e)747.50億(yi)元(yuan)(yuan)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)0.6%。全年(nian)(nian)(nian)(nian)實(shi)現社會(hui)消(xiao)費品(pin)零(ling)售總(zong)額(e)1625.68億(yi)元(yuan)(yuan)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)16.3%。全年(nian)(nian)(nian)(nian)完(wan)(wan)成(cheng)進出口總(zong)額(e)首次(ci)突破(po)千億(yi)美(mei)(mei)元(yuan)(yuan)，達1066.1億(yi)美(mei)(mei)元(yuan)(yuan)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)22.8%，其中(zhong)出口總(zong)額(e)709.06億(yi)美(mei)(mei)元(yuan)(yuan)，增(zeng)長(chang)23.6%。全年(nian)(nian)(nian)(nian)累(lei)計接待游(you)客1770.40萬(wan)(wan)人(ren)次(ci)，比(bi)(bi)(bi)上年(nian)(nian)(nian)(nian)增(zeng)長(chang)57.1%。實(shi)現旅游(you)收入259.88億(yi)元(yuan)(yuan)，增(zeng)長(chang)56.3%。