Syracuse Census Tracts (2020)

Description: The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Census tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity, and were defined by local participants as part of the 2020 Census Participant Statistical Areas Program. The Census Bureau delineated the census tracts in situations where no local participant existed or where all the potential participants declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Physical changes in street patterns caused by highway construction, new development, and so forth, may require boundary revisions. In addition, census tracts occasionally are split due to population growth, or combined as a result of substantial population decline. Census tract boundaries generally follow visible and identifiable features. They may follow legal boundaries such as minor civil division (MCD) or incorporated place boundaries in some States and situations to allow for census tract-to-governmental unit relationships where the governmental boundaries tend to remain unchanged between censuses. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances, a census tract may consist of noncontiguous areas. These noncontiguous areas may occur where the census tracts are coextensive with all or parts of legal entities that are themselves noncontiguous. For the 2020 Census, the census tract code range of 9400 through 9499 was enforced for census tracts that include a majority American Indian population according to Census 2010 data and/or their area was primarily covered by federally recognized American Indian reservations and/or off-reservation trust lands; the code range 9800 through 9899 was enforced for those census tracts that contained little or no population and represented a relatively large special land use area such as a National Park, military installation, or a business/industrial park; and the code range 9900 through 9998 was enforced for those census tracts that contained only water area. Data Dictionary: Label Definition TRACTCE20 2020 Census census tract code STATEFP20 2020 Census state Federal Information Processing Series (FIPS) COUNTYFP20 2020 Census county Federal Information Processing Series (FIPS) code GEOID20 Census tract identifier, a concatenation of 2020 Census state Federal Information. Processing Series (FIPS) code, county FIPS code, and census tract code NAME20 2020 Census census tract name, this is the census tract code converted to an integer or integer plus two-digit decimal if the last two characters of the code are not both zeros. NAMELSAD20 2020 Census translated legal/statistical area description and the census tract name. MTFCC20 MAF/TIGER feature class code FUNCSTAT20 2020 Census functional status AWATER20 2020 Census water area (square meters) ALAND20 2020 Census land area (square meters) INTPTLAT20 2020 Census latitude of the internal point INTPTLON20 2020 Census longitude of the internal point Data Dictionary Source: United States Census Bureau XML available at: CensusTractsInSyracuseNY-2020.xml Dataset Contact Information: Organization: City of Syracuse Position: Data Program Manager Email: [e-mail] City: Syracuse, NY数据集描述：TIGER/Line形状文件（TIGER/Line shapefile）及相关数据库文件（.dbf）是从美国人口普查局的主地址文件/拓扑集成地理编码与参考（Master Address File / Topologically Integrated Geographic Encoding and Referencing，简称MAF/TIGER）数据库（MTDB）中提取的精选地理与制图信息数据集。MTDB是无缝的全国性文件，各部分之间无重叠或间隙，但每个TIGER/Line形状文件均可独立作为单一数据集使用，也可合并覆盖整个美国国土范围。 人口普查分区（census tract）是县或等效行政单元的小型、相对固定的统计分区，由本地参与者作为2020年人口普查参与者统计区域计划的一部分划定。当无本地参与者或所有潜在参与者均拒绝参与时，由美国人口普查局划定人口普查分区。人口普查分区的核心用途是提供一套稳定的地理单元，用于呈现人口普查数据并与历次十年一次的人口普查数据进行对比。 人口普查分区的人口规模通常介于1200至8000人之间，最优规模为4000人。首次划定之时，人口普查分区的设计目标是在人口特征、经济状况与居住条件方面保持同质性。人口普查分区的空间范围因居住密度差异而差异显著。公路建设、新开发项目等造成的街道格局物理变化，可能需要修订分区边界。此外，人口增长可能导致普查分区被拆分，而人口大幅减少则可能导致分区合并。 人口普查分区的边界通常遵循可视且可识别的地物。在部分州及场景下，边界可遵循法律边界，如小民事分区（minor civil division, MCD）或建制地区（incorporated place）的边界，以建立普查分区与政府单元的对应关系，这类政府边界在两次人口普查之间通常保持不变。在标准普查地理层级中，州界与县界始终属于人口普查分区边界。在极少数情况下，人口普查分区可能由不连续的区域组成，这类情况通常发生在普查分区与本身不连续的法律实体（全部或部分）范围重合之时。 针对2020年人口普查，以下普查分区代码范围被启用：9400至9499的代码段用于涵盖根据2010年人口普查数据为多数美洲印第安人人口的普查分区，或其区域主要被联邦认可的美洲印第安人保留地及/或保留地外信托土地覆盖的普查分区；9800至9899的代码段用于人口极少或无人口、且代表相对大型特殊土地利用区域（如国家公园、军事设施或商业/工业园区）的普查分区；9900至9998的代码段用于仅包含水域区域的普查分区。 数据字典： 标签 定义 TRACTCE20 2020年人口普查分区代码 STATEFP20 2020年人口普查州联邦信息处理标准（Federal Information Processing Series, FIPS）代码 COUNTYFP20 2020年人口普查县联邦信息处理标准（FIPS）代码 GEOID20 人口普查分区标识符，由2020年人口普查州联邦信息处理标准（FIPS）代码、县FIPS代码与普查分区代码拼接而成 NAME20 2020年人口普查分区名称，即普查分区代码转换为整数；若代码最后两位均不为零，则为整数加两位小数形式 NAMELSAD20 2020年人口普查经翻译的法律/统计区域描述及普查分区名称 MTFCC20 MAF/TIGER要素类别代码 FUNCSTAT20 2020年人口普查功能状态 AWATER20 2020年普查水域面积（单位：平方米） ALAND20 2020年普查陆地面积（单位：平方米） INTPTLAT20 2020年普查内部点纬度 INTPTLON20 2020年普查内部点经度 数据字典来源：美国人口普查局可获取的XML文件：CensusTractsInSyracuseNY-2020.xml 数据集联系方式： 组织：锡拉丘兹市 职位：数据项目经理 邮箱：[e-mail] 城市：纽约州锡拉丘兹市