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Using Maps to Understand Your Constituents: New York City Council Redistricting

Using Maps to Understand Your Constituents: New York City Council Redistricting. Howard Shih April 3, 2014. Overview. Reveal impact of changes in City Council Districts on representation in the Asian American community in New York City

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Using Maps to Understand Your Constituents: New York City Council Redistricting

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  1. Using Maps to Understand Your Constituents: New York City Council Redistricting Howard Shih April 3, 2014

  2. Overview • Reveal impact of changes in City Council Districts on representation in the Asian American community in New York City • Provide a means of reaching out to Council Members regarding their growing Asian constituents • Time permitting, also present some of the findings from our similar briefs on State Assembly and Senate Districts.

  3. Topics covered: • Population and growth • Asian ethnic group population detail • Languages spoken

  4. Challenges • City Council districts are built from Census Block data • Data on Asian ethnic group populations and languages spoken only available at Census Tract level • Presenting population data and old and new district boundaries on a map.

  5. Allocating Census Tract Level Data to Census Blocks • We assume that Asian ethnic group populations were distributed the same as Asian populations as a whole across the Census Blocks of any Census Tract. • Example: if 20% of Asians in Census Tract A resided in Census Block A.1, then 20% of Chinese in Census Tract A were allocated to Census Block A.1. District Boundary Census Block A.1 Census Block A.2 Census Tract A

  6. Creating the Dataset • Languages were allocated using the distribution of total population across Census Blocks within each Census Tract. • Once Census Tract data was allocated across the Census Blocks, City Council District data was tabulated based on the definitions provided by the city. Each Census Block was assigned to a single City Council District.

  7. Results

  8. Tabular Data of Populations

  9. Tabular Data of Asian Groups

  10. Tabular Data of Languages

  11. Comparing Old and New Districts

  12. Comparing Old and New Districts

  13. Comparing Old and New Districts

  14. Difference between City Council and State Legislative District Briefs • State legislative districting had been completed in early 2012 in time for the November 2012 election cycle. • Hence, emphasis of briefs was on new districts without comparison to old districts.

  15. Outreach • Inform the community of the impact of changes due to redistricting. • Coverage in local Chinese- and Korean- language press. • Resource for language access advocates. • Initiate dialogue with key office holders • Letters to office holders. • Follow-up meetings resulting in additional data requests and maps to help with constituent outreach.

  16. Visualizing Asian Languages

  17. Visualizing Asian Languages

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