Accessing and Using Census Data Census Data The New American FactFinder The New American FactFinder (AFF2) (AFF2) Northwest Government Information Network Tumwater, Washington November 4, 2011
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Accessing and Using
Census DataCensus Data
The New American FactFinder (AFF2)The New American FactFinder (AFF2)
Northwest Government Information NetworkTumwater, Washington
November 4, 2011
Speaking of Browsers (06-28-11)
• Recommended browsers– Internet Explorer 7.0– Mozilla Firefox 3.5 or higher
• Some compatibility issues still– Safari– Google Chrome
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Census Bureau Home Page Census Bureau Home Page www.census.govwww.census.gov
Simple searches are available on the home page
American FactFinder is the single entry
point for census data
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Population FinderPopulation Finder
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Quick FactsQuick Facts
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AFF Transition Pageto New (AFF2)New (AFF2) from Legacy (AFF)Legacy (AFF)
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Due to sunset by November 30, 2011
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AFF2 FAQs
AFF Transition Pageto New (AFF2)New (AFF2) from Legacy (AFF)Legacy (AFF)
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Due to sunset by November 30, 2011
Click on hyperlink of each Summary File to view table shells available
Example: SF 1 shell for the P23 table - -
Households by Presence of People 60 Years and Over By Household Type
2010 Census Data ProductsRelease Schedule
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AFF Transition Pageto New (AFF2)New (AFF2) from Legacy (AFF)Legacy (AFF)
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Due to sunset by November 30, 2011
Quick Start Text Box(only available from the Main page)
Enter a topic / table name or geography alone, or Enter a topic / table name and
geography
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Nine tutorials take 3-5 minutes each to complete - - the AFF2 search and
navigation tips (in your packets) are based on these
tutorials.A “Virtual Tour” is
also available.
AFF2 Main Page
Search Results = number of data products currently
available, before filters are applied
“i” (information) icon opens a table shell
similar to “What’s This?” on Legacy AFF
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Search Tab
Search Results Pane This view changes as the filters are applied and appear in the Your Selections box. You make your final selection of data product
(table) from this list and then view the result.
Search within ResultsRefine your search results
by entering keywords
Search by TopicExpand any of the topics
and make a selection
Advanced Search Options•Geographies•Population Groups•Industry Codes
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Filters Column - - available from both the Main and the Search tabs
Very Important . . . Very Important . . .
All the filters you choose must All the filters you choose must appear in the Your Selections box appear in the Your Selections box
before you make your final before you make your final selection of a data product (table)selection of a data product (table)
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Tips / Hints
• “Your Selections” is limited to 250 search items. Pseudo-geographies (all the census tracts in a county, for instance) count as only one geography
• Tables that exceed 50,000 geographies (expanded from 10,000!) and / or 500,000 rows are too large to display. For example, “All Places in the United States.” Refer to the FTP site for large downloads
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Search Using Geography:Name tab
Enter text or use geo filters
Geographic selections added to Your Selections
box
Search Results updated under geography overlay
Close overlay after verifying
your final choice is included in the Your Selections
box
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Search using Geography:Address tab
Search for geographies by entering an address
thenSelect geographies to add to Your Selections
Geographies Search• Search for Geographies by Name
– Text Search
– Filtered Search
– Indexes • Show most requested summary levels
– Default setting consisting of commonly selected geographies
• Show all summary levels
– Displays all geographies / summary levels, not including individual blocks Slower than “most requested” option
• Select individual blocks
– Does not include “Group geographies” for blocks such as “all blocks within a Place”
– Very slow performance
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Search using Geography: Map tab
Select a single geography by clicking on the map
Select multiple geographies by drawing a rectangle or circle on the map
Add the selected geographic areas to “Your Selections”
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By using . . .• Text boxor symbol . . . • Point• Rectangle• Polygon• Circle
Search usingPopulation Groups
Population Groups overlay functions like Geography overlay
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. . . As does the Industry Codes overlay
Search using Industry Codes
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View a Table
View your selected search results
Bookmark the data for future use
Download the data in multiple formats
• Excel• Comma-Delimited• PDF
Create a thematic map from the table
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Modify a Table
Collapse or expand groups of data in the tableReorder rows and columnsTranspose rows and columnsFilter resultsReset table to its original viewBookmark or save queryDownload table
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Create aThematic Map(“on the fly” from a table)
Data Classes and Colors:• Change colors and transparency • Modify number of classes • Revise classing method
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Boundaries and Features:• Select / Deselect, then Update
Find a Location:• By place name• By address • By latitude and longitude• By geographic area
Map Markers:• Place a map marker• Place text on a map
Caveats:• One theme (only) per map• At least two (same level) geographies
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LEGEND • Zoom to state• Zoom in• Zoom out• Pan• U.S. view• Identify• Statistical significance• PrintMap Tools
Census Geography:Hierarchy
CTs: 1,200 to 8,000 population480 to 3,200 housing units
BGs: 600 to 3,000 population240 to 1,200 housing units
2010Statistical Area Criteria
(1) Cities and towns - Incorporated
(2) CDPs = Census Designated Places
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Statistical Areas: New Criteria
2000 2010 Minimum Optimum Maximum Minimum Optimum Maximum
CT 1,500 4,000 8,000 1,200 4,000 8,000
HU 480 1,600 3,200
BG 600 1,500 3,000 600 None 3,000
HU 240 None 1,200
CDP (Census Designated Place)- Cannot have zero population or housing units- Cannot be coextensive with an incorporated place- Must represent a single, distinct community
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Home page > Maps > Map Products > (select type of map - - census tract, block, voting district / state legislative district,
or school district) > (select state) > (select county) > open 000.pdf (index map) to determine map sheet (or inset) >
back out > select map sheet (or inset)
2010 CensusReference Maps are now online
Data User Training Resources
•Online Manual: How to Use AFF•Virtual Tour•Tutorials•FAQs
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www.census.gov > Publications >Census of Population and Housing >2010 > Technical Documentation >
Public Law 94-171 Redistricting Data Summary File, or select another from drop-down list
or . . . Type technical documentationin text box and choose from drop down menu
Technical Documentation3 Ways to Find It *
* Technical documentation is published for each dataset
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or . . . factfinder2.census.gov > Topics > expand Program >
Decennial Census > expand Document Type > Technical Documentation > (choose dataset)
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DownloadSite
Enter ftp in Quick Start search box or Click on more in this Feb 04, 2011 News and Notes
Thank you!Thank you!
Linda ClarkData Dissemination Specialist, Pacific Northwest
Los Angeles Region, U.S. Census [email protected]: 206-446-8794
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