In counting population, the entire nation is divided into census blocks. Census blocks are statistical areas bounded by visible features such as roads, water bodies and railroad tracks, and by nonvisible boundaries such as property lines, city, county and school district lines. In a city, a census block looks like a city block bounded on all sides by streets. Census blocks in suburban and rural areas may be large, irregular, and bounded by a variety of features. By law, the Redistricting Data Program provides states the opportunity to specify where census blocks will be. Local governments do not determine where census blocks are and the county cannot split census blocks during redistricting. Census blocks may be viewed as an overlay on proposed redistricting maps in the county’s GIS system. A link to the system and a how-to video on how to use it are available at gtcounty.org/redistricting.