2021年昆山市實現地區生產總(zong)值(zhi)4748.06億(yi)元(yuan)(yuan)(yuan)，按可比(bi)價計算，比(bi)上年增(zeng)長(chang)7.8%。其中，第一產業(ye)增(zeng)加(jia)(jia)值(zhi)31.18億(yi)元(yuan)(yuan)(yuan)，增(zeng)長(chang)0.6%；第二產業(ye)增(zeng)加(jia)(jia)值(zhi)2462.74億(yi)元(yuan)(yuan)(yuan)，增(zeng)長(chang)9.7%；第三(san)產業(ye)增(zeng)加(jia)(jia)值(zhi)2254.14億(yi)元(yuan)(yuan)(yuan)，增(zeng)長(chang)5.9%，三(san)次(ci)產業(ye)比(bi)重(zhong)為0.7:51.8:47.5。年末擁有市場(chang)主(zhu)體107.77萬(wan)戶(hu)，成為全省首(shou)個市場(chang)主(zhu)體突破100萬(wan)戶(hu)的縣級市，新登記市場(chang)主(zhu)體30.56萬(wan)戶(hu)。

2021年(nian)(nian)(nian)昆山市完成農(nong)林(lin)牧(mu)漁業(ye)總(zong)(zong)產值53.19億(yi)(yi)元(yuan)，農(nong)林(lin)牧(mu)漁業(ye)增(zeng)(zeng)(zeng)加值34.81億(yi)(yi)元(yuan)。糧食總(zong)(zong)產量9.10萬(wan)(wan)噸(dun)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)0.8%。全(quan)(quan)年(nian)(nian)(nian)規上(shang)(shang)(shang)工業(ye)總(zong)(zong)產值首次(ci)突破萬(wan)(wan)億(yi)(yi)元(yuan)，達10284.48億(yi)(yi)元(yuan)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)12.8%。資(zi)(zi)質以(yi)上(shang)(shang)(shang)建(jian)筑(zhu)(zhu)業(ye)企業(ye)實(shi)現(xian)建(jian)筑(zhu)(zhu)業(ye)總(zong)(zong)產值379.76億(yi)(yi)元(yuan)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)19.0%。全(quan)(quan)年(nian)(nian)(nian)完成固定資(zi)(zi)產投資(zi)(zi)總(zong)(zong)額(e)747.50億(yi)(yi)元(yuan)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)0.6%。全(quan)(quan)年(nian)(nian)(nian)實(shi)現(xian)社會(hui)消(xiao)費品(pin)零售總(zong)(zong)額(e)1625.68億(yi)(yi)元(yuan)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)16.3%。全(quan)(quan)年(nian)(nian)(nian)完成進出(chu)口(kou)總(zong)(zong)額(e)首次(ci)突破千(qian)億(yi)(yi)美(mei)元(yuan)，達1066.1億(yi)(yi)美(mei)元(yuan)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)22.8%，其中出(chu)口(kou)總(zong)(zong)額(e)709.06億(yi)(yi)美(mei)元(yuan)，增(zeng)(zeng)(zeng)長(chang)23.6%。全(quan)(quan)年(nian)(nian)(nian)累計接待游客1770.40萬(wan)(wan)人次(ci)，比上(shang)(shang)(shang)年(nian)(nian)(nian)增(zeng)(zeng)(zeng)長(chang)57.1%。實(shi)現(xian)旅游收(shou)入259.88億(yi)(yi)元(yuan)，增(zeng)(zeng)(zeng)長(chang)56.3%。