Stoneham is an unincorporated community and a U.S. Post Office located in Weld County, Colorado, United States. The Stoneham Post Office has the ZIP Code 80754.Stoneham is northeast of Denver.Stoneham is located at 40°36′17″N 103°39′56″W / 40.60472°N 103.66556°W / 40.60472; -103.66556.The community is located near the junction of SH 71 and SH 14