Gadus　macrocephalus　(Pacific　cod)　is　an　economically　important　species　on　the　northern　coast　of　the　Pacific.　Although　numerous　studies　on　G.　macrocephalus　exist,　there　are　few　reports　on　its　genomic　data.　Here,　we　used　whole-genome　sequencing　data　to　elucidate　the　genomic　characteristics　and　phylogenetic　relationship　of　G.　macrocephalus.　From　the　19-mer　frequency　distribution,　the　genome　size　was　estimated　to　be　658.22　Mb.　The　heterozygosity,　repetitive　sequence　content　and　GC　content　were　approximately　0.62%,　27.50%　and　44.73%,　respectively.　The　draft　genome　sequences　were　initially　assembled,　yielding　a　total　of　500,760　scaffolds　(N50　=　3565　bp).　A　total　of　789,860　microsatellite　motifs　were　identified　from　the　genomic　data,　and　dinucleotide　repeat　was　the　most　dominant　simple　sequence　repeat　motif.　As　a　byproduct　of　whole-genome　sequencing,　the　mitochondrial　genome　was　assembled　to　investigate　the　evolutionary　relationships　between　G.　macrocephalus　and　its　relatives.　On　the　basis　of　13　protein-coding　gene　sequences　of　the　mitochondrial　genome　of　Gadidae　species,　the　maximum　likelihood　phylogenetic　tree　showed　that　complicated　relationships　and　divergence　times　among　Gadidae　species.　Demographic　history　analysis　revealed　changes　in　the　G.　macrocephalus　population　during　the　Pleistocene　by　using　the　pairwise　sequentially　Markovian　coalescent　model.　These　findings　supplement　the　genomic　data　of　G.　macrocephalus,　and　make　a　valuable　contribution　to　the　whole-genome　studies　on　G.　macrocephalus.　©　2022　The　Author(s).