Census Blocks 2010

Census blocks, the smallest geographic area for which the Bureau of the Census collects and tabulates decennial census data, are formed by streets, roads, railroads, streams and other bodies of water, other visible physical and cultural features, and the legal boundaries shown on Census Bureau maps.普查区块（Census blocks）是美国人口普查局收集并制表汇总十年一次人口普查数据的最小地理单元，其由街道、道路、铁路、溪流及其他水体、其他可见的自然与人文地理特征，以及美国人口普查局地图上标注的法定边界共同划定。