2021年鎮海區實現(xian)地區生產(chan)總(zong)值（GDP）1252.4億(yi)元，晉升到(dao)全省第(di)18位，按可(ke)比價計(ji)算，比上年增(zeng)(zeng)長(chang)(chang)7.0%，其中，第(di)一產(chan)業(ye)增(zeng)(zeng)加值7.0億(yi)元，增(zeng)(zeng)長(chang)(chang)3.1%；第(di)二(er)產(chan)業(ye)增(zeng)(zeng)加值839.7億(yi)元，增(zeng)(zeng)長(chang)(chang)7.8%；第(di)三產(chan)業(ye)增(zeng)(zeng)加值405.7億(yi)元，增(zeng)(zeng)長(chang)(chang)5.5%。三次(ci)產(chan)業(ye)之比由(you)2020年的(de)0.6∶64.4∶35.0調整為2021年的(de)0.6∶67.0∶32.4。

2021年(nian)(nian)(nian)(nian)(nian)(nian)鎮海區完(wan)(wan)成(cheng)農林牧漁業(ye)總(zong)產值(zhi)9.87億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)4.4%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區完(wan)(wan)成(cheng)規(gui)模以(yi)上(shang)工業(ye)總(zong)產值(zhi)3047.4億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)33.7%，規(gui)模以(yi)上(shang)工業(ye)增(zeng)(zeng)加(jia)值(zhi)（生產法）713.5億元(yuan)，增(zeng)(zeng)長(chang)9.6%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區建筑業(ye)實(shi)現(xian)增(zeng)(zeng)加(jia)值(zhi)51.6億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)下降4.1%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區完(wan)(wan)成(cheng)固定資產投資337.9億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)22.6%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區完(wan)(wan)成(cheng)商品(pin)銷(xiao)售額(e)(e)比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)35.1%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區實(shi)現(xian)外貿自營進出口總(zong)額(e)(e)621.9億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)18.2%。全年(nian)(nian)(nian)(nian)(nian)(nian)全區完(wan)(wan)成(cheng)旅游綜合收(shou)入45.2億元(yuan)，比上(shang)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)(zeng)長(chang)4.5%。