2021年常熟市實現地(di)區生產總值(zhi)2672.04億(yi)元(yuan)，按可比(bi)(bi)價計算(suan)比(bi)(bi)上年增(zeng)(zeng)長(chang)(chang)9.2%。其中：第(di)一產業(ye)增(zeng)(zeng)加(jia)(jia)(jia)值(zhi)39.68億(yi)元(yuan)，比(bi)(bi)上年增(zeng)(zeng)長(chang)(chang)0.5%；第(di)二產業(ye)增(zeng)(zeng)加(jia)(jia)(jia)值(zhi)1341.71億(yi)元(yuan)，增(zeng)(zeng)長(chang)(chang)10.2%；第(di)三產業(ye)增(zeng)(zeng)加(jia)(jia)(jia)值(zhi)1290.65億(yi)元(yuan)，增(zeng)(zeng)長(chang)(chang)8.5%。三次產業(ye)比(bi)(bi)例調(diao)整為1.49：50.21：48.30。按常住(zhu)人口計算(suan)，人均地(di)區生產總值(zhi)158889元(yuan)。

2021年(nian)(nian)常熟(shu)市糧食總(zong)(zong)產(chan)(chan)(chan)量23.47萬噸，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)1.4%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)實現規模以上(shang)(shang)工(gong)業總(zong)(zong)產(chan)(chan)(chan)值(zhi)4527.77億(yi)(yi)元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)22.5%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)資(zi)質(zhi)以上(shang)(shang)總(zong)(zong)承包和專業承包建(jian)筑業企業實現建(jian)筑業總(zong)(zong)產(chan)(chan)(chan)值(zhi)218.99億(yi)(yi)元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)9.9%；竣(jun)工(gong)產(chan)(chan)(chan)值(zhi)170.91億(yi)(yi)元(yuan)(yuan)，增(zeng)長(chang)10.3%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)完(wan)(wan)成固定(ding)資(zi)產(chan)(chan)(chan)投資(zi)704.09億(yi)(yi)元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)11.6%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)完(wan)(wan)成房地產(chan)(chan)(chan)開發(fa)投資(zi)292.89億(yi)(yi)元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)22.7%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)實現社會消(xiao)費品零(ling)售總(zong)(zong)額1214.22億(yi)(yi)元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)17.7%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)新增(zeng)注冊外資(zi)13.36億(yi)(yi)美元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)下降54.8%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)實現進出口總(zong)(zong)額237.84億(yi)(yi)美元(yuan)(yuan)，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)24.3%。全(quan)(quan)(quan)(quan)(quan)年(nian)(nian)接待境內(nei)游客1437.73萬人次，比(bi)(bi)(bi)(bi)上(shang)(shang)年(nian)(nian)增(zeng)長(chang)2.5%；實現旅游收入293.13億(yi)(yi)元(yuan)(yuan)，增(zeng)長(chang)1.1%。