Census County to County Migration

County-to-County in-migration, out-migration, net migration, and gross migration data as reported by the US Census Bureau.  Migration is based on residence one year ago.  Data is collected through the American Community Survey monthly data sample, and the county-to-county special tabulation is based on the 5-year ACS estimates.  The year shown in this dataset is the final year of the 5-year data collection period.

本数据集包含美国人口普查局（U.S. Census Bureau）发布的县际迁入、迁出、净迁移及总迁移数据。迁移统计以调查对象一年前的居住地址为判定依据。数据采集自美国社区调查（American Community Survey）月度数据样本，其中县际专项制表基于五年期ACS估算结果。本数据集所标注的年份为该五年数据采集周期的最后一年。