ZIP Code Population Weighted Centroids

Population weighted centroids are a common tool for spatial analysis, particularly when more granular data is unavailable or researchers lack sophisticated geocoding tools. The ZIP Code Population Weighted Centroids allows researchers and analysts to estimate the center of population in a given geography rather than the geometric center. Data to estimate ZIP code centroids is extracted from administrative USPS address data. The population weighted centroids are based on the number of residential addresses in the component ZIP+4 (also sometimes referred to as 'ZIP9') locations for each ZIP code. The data is based on ZIP+4 centroids, not ZIP Code Tabulation Areas (ZCTAs).To learn more about administrative USPS address data, please visit: https://www.huduser.gov/portal/datasets/usps.html. Data Dictionary: DD_ZIP Code Population Weighted Centroids Date of Coverage: 09/2025 Last Updated: Annually人口加权质心是空间分析领域的常用工具，尤其适用于无法获取更精细粒度的数据，或研究人员缺乏先进地理编码工具的场景。邮政编码人口加权质心（ZIP Code Population Weighted Centroids）数据集可帮助研究人员与分析师估算特定地理区域内的人口重心，而非单纯的几何重心。该数据集的邮政编码质心估算数据提取自美国邮政署（USPS）的行政地址数据集。人口加权质心的计算依据为每个邮政编码所对应的ZIP+4（有时也称为“ZIP9”）细分位置中的住宅地址数量。本数据基于ZIP+4质心，而非邮政编码制表区域（ZCTAs）。如需了解更多美国邮政署行政地址数据的相关信息，请访问：https://www.huduser.gov/portal/datasets/usps.html。数据字典：DD_邮政编码人口加权质心 覆盖日期：2025年9月 最后更新：每年一次