根據(ju)地區生產總值統一初步核算，2020年(nian)(nian)嘉興市生產總值（GDP）5509.52億元，比上(shang)年(nian)(nian)增(zeng)(zeng)(zeng)長(chang)3.5%。其中，第(di)一產業增(zeng)(zeng)(zeng)加值124.18億元，增(zeng)(zeng)(zeng)長(chang)1.8%；第(di)二產業增(zeng)(zeng)(zeng)加值2861.09 億元，增(zeng)(zeng)(zeng)長(chang)2.8%；第(di)三(san)產業增(zeng)(zeng)(zeng)加值2524.25億元，增(zeng)(zeng)(zeng)長(chang)4.3%。三(san)次產業增(zeng)(zeng)(zeng)加值結構為(wei)2.3:51.9:45.8。

2020年(nian)(nian)(nian)嘉興市完成農林牧漁(yu)業(ye)增加值(zhi)134.56億(yi)元，比(bi)(bi)上(shang)年(nian)(nian)(nian)增長2.1%。2020年(nian)(nian)(nian)，嘉興市工業(ye)增加值(zhi)2560.40億(yi)元，比(bi)(bi)上(shang)年(nian)(nian)(nian)增長3.9%，占全(quan)市生產(chan)總(zong)(zong)(zong)值(zhi)的46.5%。2020年(nian)(nian)(nian)，嘉興市固(gu)定資產(chan)投資比(bi)(bi)上(shang)年(nian)(nian)(nian)增長3.0%。2020年(nian)(nian)(nian)，嘉興市社會消費品零售(shou)總(zong)(zong)(zong)額2141.11億(yi)元，比(bi)(bi)上(shang)年(nian)(nian)(nian)下降2.3%。2020年(nian)(nian)(nian)，嘉興市外(wai)(wai)貿進出(chu)口總(zong)(zong)(zong)額3052.32億(yi)元，進出(chu)口總(zong)(zong)(zong)額首(shou)次(ci)邁上(shang)3000億(yi)元大(da)關，比(bi)(bi)上(shang)年(nian)(nian)(nian)增長7.8%。2020年(nian)(nian)(nian)嘉興市接待海內(nei)外(wai)(wai)游客1.01億(yi)人次(ci)，旅游總(zong)(zong)(zong)收(shou)入1172.60億(yi)元，分別(bie)比(bi)(bi)上(shang)年(nian)(nian)(nian)下降16.0%和 17.6%。