Acquiring and Using New Census Data to Understand Service Area, Gaps, and Need

Acquiring and Using New Census Data to Understand Service Area, Gaps, and Need

Agenda What types of Census data are available? Decennial, ACS, other we want mention today. Getting Census Data From American FactFinder From SAVI Using Census Data Comparisons Needs Index

Types of Census Data

Different Types of Data Decennial Census Used to be the only game in town, and only once every ten years American Community Survey Newer version of Census Data More frequent updates, but good grief. 2010 Census This is not your father s census data

How often do you use Census data? 1. All the time 2. Occasionally 3. Seldom 4. Never

Why do you most want to use Census data? 1. Support Grant Applications 2. Strategic Planning 3. Community Assessments 4. Program Planning 5. Other

Some Fun History First U.S. Census taken in 1790, recorded a population of 3.9 million people, and cost $45,000 (about $500,000 in today s dollars) 1880 Census data took 8 years to tabulate Concept of census tract introduced for 1910 census. First long form sent in 1940. Beginning of modern collection of data related to employment & income, and later on, education. Computerized tabulation begins in 1950. 2000 Data primarily disseminated online. 2010 Back to the future, no more long form.

2010 Census Beginning in 2010 there is no more long form, meaning the only questions asked relate to gender, age, race & ethnicity, marital status, and housing occupancy. Long Form Data Also known as SF3 data

2010 Census There is no information available for income, employment, poverty status, educational attainment, transportation, housing costs, citizenship, ancestry, language, occupations Such information is available from the American Community Survey.

American Community Survey Replacement for long-form census data First conceptualized in 1981 Began testing in 1990s, completely implemented by 2005. Conducted on a rolling basis throughout the year with data published annually Samples about 1 in 40 households every year

How familiar are you with ACS data? 1. I should be teaching this section 2. Pretty familiar 3. I ve heard of it, but it scares me 4. ACS stands for American Chemical Society, right?

ACS Time Frames ACS Data comes in different time frames 1 year estimates for areas with at least 65,000 people 3-year averages for areas with at least 20,000 people 5-year averages for everywhere else 5-years are the only version with data by tracts and blockgroups

1-Year Estimates 3-Year Averages ACS Data Availability

5-Year Averages ACS Data Availability 1-year estimates are great if you are working with an area that has enough people such as an MSA or larger county. If you are working on a neighborhood level, then the 5-year averages are your only real option.

Comparison Issues ACS Can generally be compared to 2000 Census with certain exceptions: Housing costs (because 2000 only had specified units) Migration (2000 asked if you had moved since 5 years prior while ACS asks for 1 year prior) Disabilities (the questions are completely different) Some specific issues will also crop up http://www.census.gov/acs/www/guidance_for_data_users/comparing_data/

More Comparison Issues Even comparing within ACS can be tricky. Don t compare 5-year numbers to 3-year numbers to 1-year numbers If you have a value for a small county from 3-year data compare it to the 3-year value for the state rather than the 1-year value for the state Don t compare 3-year or 5-year data with overlapping year ranges. Don t compare a 2006-2008 3-year value to a 2007-2009 3-year value.

Margins of Error All ACS data values come with margins-of-error

Margins of Error If you add up values, you are supposed to calculate your own derived MOEs. A spreadsheet from the New York Data Center allows you to do the calculation How many households make less than $25,000? 610,761 +/- 5,205 http://www.sdcbidc.iupui.edu/sharing/tools/statisticalcalculationsmen u_v2achanged02232009.xls

American Community Survey Not everyone is impressed with the ACS. See the Google suggestions when searching for American Community Survey.

Getting Census Data

AFF is the Census Bureau's data portal American FactFinder http://factfinder.census.gov/home/saff/main.html?_l ang=en There are currently 2 versions of AFF 1. Old, easy, and simple, (going away about October 31st) 2. New, complex, and powerful. The old version has 1990 and 2000 census data, and ACS data through 2009 The new version has 2000 and 2010 census data, and 2010 ACS 1-year estimates. New AFF will have all the data that old AFF has (1990 and all ACS data)

Old FactFinder Lots of ways to get data and they all start with the tabs on the left. FACT SHEET Is a good way to get started Use DATA SETS to get to the detailed information

Fact Sheet Data Profile (From Data Sets)

Old AFF Detailed tables Detailed tables allow for lots of combinations of data. Everything is a step-by-step process

New FactFinder Probably harder to use than the old FactFinder Far more powerful. The old FactFinder has a limit of about 3000 geographies that can be downloaded at once. The new FactFinder has no such limit. e.g. data for all 200,000+ census blocks in Indiana can be downloaded at once. Process is less step-by-step. Perhaps that is easier, but it leads to a lot of traps.

New AFF Quick Start

New AFF Main Search Filter by Dataset (2010 Census, ACS, etc ), year, and geography. It s not step by step so you can do them in any order. Make sure you are aware of how your selections will limit data. e.g. if you select 1-year ACS data you won t see census tracts as an available geography. Pick the one that is most important to you first.

4. View or Download 3. Select a table (or group of them) 2. Select a dataset or year 1. Select a geography (or group of them)

Getting Data From SAVI A Central Indiana Community Information System Boone Brown Hamilton Hancock Hendricks Johnson Madison Marion Morgan Putnam Shelby Note: Data will vary from county to county and is based on the datasource.

SAVI QuickInfo

Community Profiles Click Community Profiles and select the community of interest.

Community Profiles Click the overview, demographics, economy, education, health, housing, public safety, transportation & mobility, and asset tabs to view community s data.

Community Profiles

Using Census Data

Using Census Data Put your data into context How does it change over time? How does it compare to other areas?

Using FactFinder data to make comparisons

Needs Indexes There are many needs indexes out there, many that use census variables. One example we completed recently included these variables. % Families in Poverty % Population without HS diploma % Single Parent Families % Unemployed Population % Population with Public Assistance Income Can be mixed with non-census variables from other sources.

Index values don t need to be mapped, they can also be viewed in a table or a chart

Changing Diversity 1990 2000 2010 Diversity Index 0.02-0.14 0.15-0.25 0.26-0.36 0.37-0.50 0.51-0.59 0.60-0.69 No Data Source: The SAVI Community Information System; 1990, 2000, and 2010 US Census.

Race/Ethnicity Race/Ethnicity: Largest Group by Census Tract, 1990-2010 1990 2000 2010 non-hispanic African-American non-hispanic white Hispanic Source: The SAVI Community Information System; 1990, 2000, and 2010 US Census. no data

Questions

Questions If you have any questions or concerns about SAVI please feel free to contact Jay Colbert jtcolber@iupui.edu or savi@iupui.edu 317.278.9212 Michelle Derr michjone@iupui.edu 317.278.3780