Welcome to NIU Data Center

This website contains public data on immigration obtained from U.S. government agencies, as well as volunteers' analysis on those data.
本站点包含:美国各政府部门公开移民数据及 NIU 获得的独家数据, NIU 志愿者对数据的分析。

Recent Updates
  • Nov 2017
    • I-485 Pending Inventory Data for Jan 2016, Apr 2016, Oct 2016, Jan 2017, Apr 2017, Aug 2017 published on this site. Note: Since Jan 2017, the I-485 pending inventory includes the pending I-485s from the Service Centers only, and does not include the pending I-485 inventory from the field offices.
  • Jan 2016
    • I-485 Pending Inventory Data for Jan 2015, Apr 2015, Jul 2015, Oct 2015 published on this site.
  • Nov 2014
  • Nov 2013
  • Feb 2013
    • Immigrant Visa Issuance updated to include FY 2012 data
    • NIU requested demand data fixes, increasing 18,000 number to the FY 2013 EB totals (Feb 2013 Demand Data version 1version 2)
  • Dec 2012
    • Visa Bulletin and Demand Data updated
    • National Visa Center waitlist published in the 3rd week of December
    • NIU Exclusive Data release -- Form I-140 and EB I-485 Approval Stats since 2005 by Country