Block by block demographic changes & NYC Council districts, 2000 to 2010

The maps below compare changing race/ethnicity patterns in the last decade, Census block by Census block in relation to current City Council district boundaries in New York City.

Click here for an overall discussion and analysis of the city's demographic changes in the last decade.

Also try our zoomable maps, allowing you to zoom in to specific blocks, click on individual blocks to see population details, and easily move around New York City and other major metropolitan regions -- all while sliding back and forth to compare 2000 and 2010 race/ethnicity patterns on a block-by-block basis.

COMPARE CITY COUNCIL DISTRICT PLANS HERE: Visit our interactive map to view current City Council districts compared with proposed lines from the NYC Districting Commission and other parties. The Districting Commission also makes available an online mapping site if you'd like to draw your own City Council districting plan.

How to use the maps below

The maps below use a relatively new interactive technique to easily compare images (in this case, maps) from one time period to another. Each map focuses on one of the 5 boroughs. The maps "on the left" show the block-level race/ethnicity plurality patterns based on the 2000 Census. The maps "on the right" show the plurality patterns based on the 2010 Census. The legend next to the maps describes how the colors represent population percentages in each Census block. Special thanks to www.catchmyfame.com for the code to implement the comparison tool.

IMPORTANT NOTE: In blocks where the racial/ethnic group constitutes a plurality with a relatively low percent of the population, the block is shaded with a lighter color on the map. This indicates a more mixed population from a race/ethnicity perspective. Blocks with higher plurality percentages (darker shading on the maps) have a more homogenous population dominated by a single race/ethnicity group.

Note that mapping the plurality patterns may somewhat overstate the level of racial/ethnic segregation in some areas of the city. Even where the population is mixed, the maps only show one color shading. Another approach, such as "dot density" makes it easier to see the mix of population groups (for example, see the New York Times maps here). But it is easier to show change in density over time with color shaded Census blocks than with dots. We encourage your feedback and suggestions for improvement along those lines.

Each map focuses on a different borough. Areas in the other boroughs are greyed out, and the color shading in these greyed-out boroughs should not be confused with the color patterns for the borough of interest.

Click and hold the green slider in the middle of the map to drag the slider to the left or right so you can easily reveal the changing population patterns between 2000 and 2010.

Also try our zoomable maps, allowing you to zoom in to specific blocks, click on individual blocks to see population details, and easily move around the New York City metropolitan region -- all while sliding back and forth to compare 2000 and 2010 race/ethnicity patterns on a block-by-block basis.

The maps and data provided by CUR provide a window into many different narratives and analyses of demographic trends throughout the city. We encourage you to use our materials to illustrate and examine these stories by repurposing our maps and data for your own websites, blogs, publications, and studies. Please contact us if you have any questions about our work, or if we can help in any way.

The data

Below is a link to the geographic file we used for the NYC maps. Please feel free to use the data in your projects. If you use the information, please credit the "Center for Urban Research, CUNY Graduate Center" in your work. Thank you.

For more information, contact the CUNY Mapping Service (cunymapping [ at ] gc [ dot ] cuny [ dot ] edu at the Center for Urban Research, CUNY Graduate Center. Thanks!

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"BEFORE AND AFTER" MAPS
Comparing predominant race / ethnicity by block in 2000 & 2010

NOTE: Neighborhood areas are NYC Dept of City Planning "Neighborhood Tabulation Areas". See DCP website for description.
Copyright 2011 Center for Urban Research, The Graduate Center, City University of New York (CUNY)
"Before / After" slider from www.catchmyfame.com: CC Attribution-NoDerivs 3.0 Unported
CUNY Graduate Center website disclaimer/legal info