Shiro, TexasShiro is an unincorporated community and census-designated place in Grimes County, Texas, United States located on State Highway 30 and the BNSF Railway in east central Grimes County.EducationPublic education in the community of Shiro is provided by the Anderson-Shiro Consolidated [Independent School District]. The district has two campuses, Anderson-Shiro Elementary School and Anderson-Shiro Junior/Senior High SchoolDemographicsShiro first appeared as a census [designated place] in the 2020 U.S. census.2020 census