. "310.0"^^ . . "539/918" . "Shamrock is an unincorporated community in Creek County, Oklahoma, United States. The population was 101 at the 2010 census, a loss of 19.2 percent from 125 at the 2000 census. It was named for Shamrock, Illinois, the hometown of local store owner, James M. Thomas."@en . "146.4"^^ . . "74068" . "900000.0"^^ . "776996.0"^^ . "-6" . . . "146.41"^^ . . "1"^^ . "0.0"^^ . . "-5" . "776996.0"^^ . "900000.0"^^ . "309.982"^^ . "Shamrock, Oklahoma"@en .