Demographic Information

US Census Bureau

The US Census Bureau provides recent profiles for Congressional, Assembly, and Senate Districts.

• Visit https://data.census.gov/all
• Click All Geographies in the Filters menu
• Choose one of the following Geographic Entities: Congressional District, State Legislative District (Lower Chamber), or State Legislative District (Upper Chamber) 
  • Select New York
  • Select a District
  • Click the Maps tab 
  • Click the corresponding district number on the map 
  • Click View Profile

Sample profiles:

• Congressional District 1
• Assembly District 1
• Senate District 1

Detailed Race/Ethnicity Census Data (corresponding to a particular Senate or Assembly district within New York City)

1) Download a zipped shapefile for district boundaries:

Senate: https://www2.census.gov/geo/tiger/TIGER2023/SLDU/tl_2023_36_sldu.zip

Assembly: https://www2.census.gov/geo/tiger/TIGER2023/SLDL/tl_2023_36_sldl.zip

2) Visit the NYC Population FactFinder (PFF)

3) Click the "Add Map Layers" menu at the top right then upload (or drag and drop) the zipped shapefile. District boundaries should appear in magenta.

4) Click on the map to select census tracts. Please note that detailed race/ethnicity data are unavailable at the block level – only the tract level – so the available information might not correspond exactly with district boundaries.

5) Click "View Data" and a "Loading in Progress" screen should display briefly.

6) Scroll down to "Detailed Race and Ethnicity" to view population figures for the selected tracts.

For details about the data, please see https://popfactfinder.planning.nyc.gov/about

New York State Library

• US Census Collection
• Census – New York State (1807 to 1925)
   

National Conference of State Legislatures

• Redistricting and Census Resources
• Redistrictingonline.org (in collaboration with New York Law School)

New York State Legislative Task Force on Demographic Research and Reapportionment

Maps and District Profile pages provide decennial demographics data going back to 1992

New York State Department of Labor: American Community Survey

Redistricting & You for New York State (CUNY Center for Urban Research)

New York State Independent Redistricting Commission

New York State Legislative Library

Search the catalog for titles addressing demographics and reapportionment

• History of Legislative Apportionment in New York State 1777-1940
• The Manual for the Use of the Legislature of the State of New York available electronically via HeinOnline and in print is an annual publication (1840 to 1989) that provides district descriptions.