Survey of Unique Identifiers in NYC Open Data

Joins, Sorrows, and Surprises

In 2019, I presented at NYC School of Data, an all day celebration of all things open data. My talk focused on a few fundamental unique identifiers found in many NYC open geospatial datasets.

The identifiers I discussed were:

  • Borough, block, lot (BBL)
  • Building identifier number (BIN)
  • Addresses
  • Street Segment IDs

The talk is certainly not comprehensive, but was meant as a gentle introduction to all the caveats (and fascinating challenges) that comes with trying to uniquely identify infrastructure in a fast-changing and complex city.