Denver Harbor is a historic community located in eastern Houston, Texas, United States near the Houston Ship Channel. The community, bounded by Wallisville Road, the Union Pacific Railroad, and the Port Terminal Railroad Association, was first settled in the 1890s and platted in 1911 and 1913. The community includes many historic bungalow and cottage h…Denver Harbor is a historic community located in eastern Houston, Texas, United States near the Houston Ship Channel. The community, bounded by Wallisville Road, the Union Pacific Railroad, and the Port Terminal Railroad Association, was first settled in the 1890s and platted in 1911 and 1913. The community includes many historic bungalow and cottage homes.