Mississippi Code Title 27. Taxation and Finance § 27-35-53

It shall be the duty of the tax assessor in each county to assess the lands in the county. Lands not rendered, or returned shall be assessed by him as provided in Section 27-35-51. It shall be the duty of the board of supervisors to furnish the tax assessor with all necessary maps, or plats, of the county, and of every portion thereof, including municipalities, and every survey, subdivision or addition thereto, and of every school district, road district or other separate taxing districts. Such maps or plats shall be uniform in size, drawn to scale, and shall show clearly the location of all tracts of lands in the county and every portion thereof, and shall show the boundaries of every supervisor's district, road district, school district, or other taxing district, and of every municipality, and of every survey, subdivision, or addition, and of all separate, adjacent, annexed territory, added to any separate school district. The tax assessor shall compare his rolls with such maps and see that the whole of his county is assessed.