1. CENSUS GEOGRAPHY WORKSHOP Tim McMonagle Geography Los Angeles Regional Office 1

2. Hierarchy of Census Geography

3. Changes in California Census Geography for 2010 Geographic Entities 2010 Census Census 2000 American Indian / Alaska Native / Native Hawaiian Areas 108103 Block Groups 2321222133 Census Blocks710145533163 Census Tracts80577049 Congressional Districts (108th - 112th)53 Counties and Equivalents58 County Subdivisions397387 Elementary School Districts548571 Places15231081 Secondary School District10492 State Legislative Districts (Lower)80N/A State Legislative Districts (Upper)40N/A Unified School Districts 335326 Voting Districts17582N/A

4. 2010 Census Tract Criteria New Census Tracts Coding Series 9400-9499 Any tract with a majority of population and/or area on Hawaiian Home Lands 9800-9899 Special Land Use tracts 9900-9999 Water Census Tracts

6. What are TIGER/Line Shapefiles? Extracts of selected geographic and cartographic information from MTDB. Nationwide coverage Contains no sensitive data Are designed for use with GIS Contains geographic linear, areal, and point features, including attribute information Geographic entity boundaries The legal and statistical areas for which Census tabulates data 6

7. File Naming Convention The name of each file is: tl_2010_ _ _ tl- TIGER/Line 2010- version extent - 2 digit state FIPS code - 5 digit state county FIPS code layer- type of geography or feature 10 at the end = 2010 census geography 00 at the end = 2000 census geography ext – file extension 7

8. Attribute and Data Tables

9. Join Function

11. Tim McMonagle Geography Los Angeles Regional Office U. S. Census Bureau Timothy.william.mcmonagle@census.gov 818-267-7124 11