根據地區生產總值(zhi)(zhi)(zhi)統一核算結(jie)(jie)果，2020年(nian)衡陽市實現地區生產總值(zhi)(zhi)(zhi)（GDP）3508.50億(yi)元，按可比(bi)價計算，比(bi)上年(nian)增(zeng)長4.0%。其(qi)中，第一產業(ye)(ye)(ye)增(zeng)加值(zhi)(zhi)(zhi)441.67億(yi)元，增(zeng)長3.9%；第二產業(ye)(ye)(ye)增(zeng)加值(zhi)(zhi)(zhi)1159.32億(yi)元，增(zeng)長5.1%；第三產業(ye)(ye)(ye)增(zeng)加值(zhi)(zhi)(zhi)1907.50億(yi)元，增(zeng)長3.3%。全市三次產業(ye)(ye)(ye)結(jie)(jie)構為(wei)(wei)12.6:33.0:54.4。工業(ye)(ye)(ye)增(zeng)加值(zhi)(zhi)(zhi)占(zhan)地區生產總值(zhi)(zhi)(zhi)的比(bi)重為(wei)(wei)23.8%；第一、二、三產業(ye)(ye)(ye)對經濟(ji)增(zeng)長的貢獻率分別為(wei)(wei)10.3%、48.0%和(he)41.7%。

2020年(nian)(nian)衡陽市(shi)農林(lin)牧漁業(ye)(ye)(ye)實現總(zong)(zong)產(chan)值782.11億元(yuan)，增長(chang)4.1%。全(quan)(quan)市(shi)規模工業(ye)(ye)(ye)增加值增長(chang)5.4%。全(quan)(quan)市(shi)資質(zhi)以上(shang)(shang)總(zong)(zong)承包和(he)專業(ye)(ye)(ye)承包建筑(zhu)業(ye)(ye)(ye)企業(ye)(ye)(ye)建筑(zhu)業(ye)(ye)(ye)總(zong)(zong)產(chan)值676.09億元(yuan)，增長(chang)9.6%；全(quan)(quan)市(shi)建筑(zhu)業(ye)(ye)(ye)增加值324.16億元(yuan)，增長(chang)5.3%。全(quan)(quan)年(nian)(nian)固定資產(chan)投資（不含(han)農戶）比上(shang)(shang)年(nian)(nian)增長(chang)9.4%。全(quan)(quan)年(nian)(nian)社會(hui)消費品零售總(zong)(zong)額1594.34億元(yuan)，比上(shang)(shang)年(nian)(nian)下(xia)降2.6%。全(quan)(quan)年(nian)(nian)進出口總(zong)(zong)額302.4億元(yuan)，比上(shang)(shang)年(nian)(nian)下(xia)降18.0%。全(quan)(quan)市(shi)民(min)用車輛保有量(liang)達到111.87萬(wan)輛，增長(chang)6.3%。全(quan)(quan)市(shi)郵(you)電業(ye)(ye)(ye)務(wu)總(zong)(zong)量(liang)（按不變價(jia)計算）505.42億元(yuan)，增長(chang)33.3%。全(quan)(quan)市(shi)接待國內外游(you)客6479.77萬(wan)人次，比上(shang)(shang)年(nian)(nian)下(xia)降15.8%。實現旅游(you)總(zong)(zong)收入573.26億元(yuan)，下(xia)降15.7%。