All railroad, electric, hydroelectric, telephone and telegraph companies, and all water, gas, street, and interurban railroad companies and all docks, terminals, toll road, toll bridge, and ferry companies and all other public utility companies must make return of each item of real estate describing by metes and bounds and giving number of acres in each tract or by lot and block number, if in incorporated cities or towns, and of the improvements thereon, and all the buildings and structures, stating material of which constructed, and all machinery, fixtures, and appliances, and all other tangible property and assets owned and assessed, or liable to assessment for the same year, within this state, and the location and assessed value thereof, and the county, city, town, or school district, or other tax district wherein the same are assessed for taxation for state, county, municipal, school, or other tax district purposes, or are liable to assessment, and whether or not they are specifically used in business of the company making the return.