Tag Archives: NYC

NYC 2010 Tract Boundaries

Map of 2010 Census Tracts

Click for interactive map

There are so many places to get Census boundaries, but often for NYC, the layers from NYC Dept of City Planning BYTES of the Big Apple are the most detailed.

However, these boundaries do not contain fields to join with some of the more popular sources for Census variables, either for the the 2010 Decennial Census or the American Community Survey 5-year estimates.

It doesn’t take too much time to create the various fields, and as you can see in the examples, these are very similar with just a couple minor variations. The boundaries are available in the data catalog.

NYC Planning uses a seven character ID identifying tracts, the first digit is the borough ID and the remaining six are the Census Bureau defined tract ID which is good if joining to the tables created by NYC Planning only.

Example Borough ID Tract ID
1010400 1 010400

The Census Bureau uses an 11 character ID for joining with data from the Census Bureau American FactFinder or Social Explorer

Example State Code County Code Tract ID
36061010400 36 061 010400

NHGIS uses a 14 character ID

Example Prefix State ID County ID Tract ID
G3600610010400 G 360 0610 010400

Infoshare uses a 10 character ID

Example County ID Tract ID
0610104.00 061 0104.00

The 2010 Tract boundaries can be joined with data from

  • The 2010 Decennial Census
  • American Community Survey (ACS) 5-yr estimates
    (except ’05-’09 which uses the 2000 boundaries!)

NYC Election Research

Looking for research on NYC elections and campaign finance information?  Try these sites!

New York City Board of Elections website provides:

New York City Campaign Finance Board website provides:

  • CFB Searchable Database that allows you to search by election cycle, candidate, contributor name, amount of contribution, date of contribution, contributor employer
  • campaign finance summaries for citywide elections
  • press tools, including calendar of scheduled board meetings, campaign finance law, enforcement information

Citywide Agency Performance Reporting


How well are NYC’s agencies performing?  Look to

Citywide Performance Reporting (CPR)

for a collection of performance measures from more than 40 city agencies.  Search by agency or citywide theme to get performance measures data tables and pie charts.  New data is added once a month.

NYT & WNYC to Launch SchoolBook

A new project – SchoolBook – will launch on September 7th, 2011 – a collaboration of the New York Times and WNYC, which will be a site offering daily news, data, and discussion about New York City schools, including customized pages for each of the 1,700 pubic schools and 800 private schools in the city.

Sign up to get email notification when the site will be ready at:


In the meantime, do you need other NYC education resources for your beat reporting?  Try:

for statistics, data, and reports on schools.

Intro workshop date change

image1We’re changing the date for the Intro to GIS workshop from Friday 6/18 to 6/25 because both Eric and I are attending the NYCArc Users Group seminar held at John Jay College.

If you are interested in attending the all day event, registration info can be found on the NYC Arc Users Group site. There’s a good group of speakers and presentations lined up throughout the day.

NYPL Map Rectifier


 NYPL has a new toy tool for rectifying digitized historic maps from their collection called the NYPL Map Rectifier.

After creating an account, browse through the various maps and collections, choose a map to rectify, clip or mask the image, and finally export out to either a KML (for Google Earth) or a WMS base URL for use in a GIS software. Some maps have the option to export into either PNG or TIF formats as well.

There is also a vectorize option for a few of the rectified maps (I didn’t see this option on most maps, I’m guessing because it’s still in beta). For these, the vector layers can be downloaded in several formats including shapefile.

NYPL has also created a site called Relief Map Warper and has uploaded maps for Haiti which after georeferencing, the maps will become available in Open Street Map for tracing, and also made available for use on the ground by relief workers. I highly recommend joining and helping out if you can.



Latest edition of MapPluto Now Available

We now have the latest version of the New York City Planning Tax Lot Layers; MapPLUTO 09 V1 is here and includes data updated through Spring of 2009.  MapPLUTO models tax lots throughout New York City. This dataset represents a compilation of data from various government agencies throughout New York. The attribute data pertains to tax lot and primary building characteristics and information related to administrative and political districts for each tax lot in New York City. The underlying geography is derived from the Department of City Planning’s Tax Block and Tax Lot Base Map project.

The datasets are only available in the EDS lab during lab hours.

NYPL Mapping NYC

Matt Knutzen has done an amazing job putting together a KMZ index of digitized NYC map collections from the NYPL Map Division.

Check out his post with some recommendations on how to use it, and then download it.

There’s also a short video called Mapping the World which is part of the Treasures of NYPL Video Series which is worth checking out.

It’s narrated by both Alice Hudson, the Chief of the map division and Matt Knutzen, the Assistant Chief.

Working with NYC Spatial Data Workshop

As mentioned in today’s GIS workshop, I’m including both the presentation and the exercise using data from BYTES and Infoshare.

More or less, here’s a list of the websites we looked at, many of which can also be found on the EDS website Spatial Data webpage:

Another resource I did not mention but is well worth the time to check out is the NYPL Map Division blog which lists some of the unique maps and images available in their collection. Not only is this a valuable resource for maps related to NYC, but make sure to take a look at the attachments. Included in some of the posts are kml & kmz index files.

Also, for historic maps look through both the David Rumsey Map Collection and in the Library of Congress Map Collections. Everything in both of these sites are downloadable as high resolution images.