Transcript Major Census Data Sources Census Data Sources • Census Bureau conducts over 100 surveys each year • Demographic: • Responsible for 28 surveys,

Major Census Data Sources
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Census Data Sources
• Census Bureau conducts over 100 surveys each year
• Demographic:
• Responsible for 28 surveys, mostly annual
American Time Use Survey (ATUS)
Consumer Expenditure Survey (CES)
Library Media Center Questionnaire/Schools and Staffing Survey
National Crime Victimization Survey (NCVS)
National Prisoner Statistics (NPS) Program
• Economic:
• Responsible for 95 surveys
• Annual, quarterly, and monthly
• Limited detail, mostly at the national level
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Population Estimates Program
• Federal mandate to produce annual estimates
“During the intervals between each census of population … the
Secretary, to the extent feasible, should annually produce and
publish for each State, county, and local unit of general purpose
government which has a population of fifty thousand or more,
current data on total population and population characteristics and,
to the extent feasible, shall biennially produce and publish for other
local units of general purpose government current data on total
population.”
- U.S.C. Title 13, Section 181
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Population Estimates Program
Annual Estimates
• Developed with assistance of the Federal State
Cooperative Program for Population Estimates
• Population
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Nation by age, sex, race, and Hispanic origin
States by age, sex, race, and Hispanic origin
Counties by age, sex, race, and Hispanic origin
Incorporated places and minor civil divisions (total pop only)
Puerto Rico Commonwealth and municipios by age and sex
• Total housing units
• States
• Counties
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Population Estimates Program
Uses of Population Estimates
• Distribution of Federal funds
• Population controls for major surveys
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American Community Survey
Current Population Survey
Survey of Income and Program Participation
American Housing Survey
• Denominators for vital rates and per capita time series
• Monitoring recent demographic changes
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Population Estimates Program
Schedule of Releases
Latest Data
Available
Next Release
National and state population and demographic
components of population change
2009
12/2010
State estimates of population 18 and over
2009
12/2010
County population and demographic components of
population change
2009
3/2011
Metropolitan and micropolitan statistical area population
and demographic components of population change
2009
3/2011
National, state, and county population by age, sex, race,
and Hispanic origin
2008
5/2010
State and county housing unit estimates
2008
7/2010
Population Detail
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Census 2000
• Short form and long form
• Summary Files available in American FactFinder
• SF1 and SF 2 from the short form
• SF3 and SF4 from the long form
• SF2 and SF4 repeat all table from SF1 and SF3 for 249
population groups
• Geography
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SF1 available to the block level
SF2 available to the census tract level
SF3 available to the block group level
SF4 available to the census tract level
American Community Survey
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American Community Survey
The evolution of the ACS
Congress renewed
Introduction of interest in a continuous
rolling sample
measurement
design concept alternative to the long
in context of
form sample
Census Bureau
Congress
authorized a middecade census
but did not
appropriate funds
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First data
released for
nation and
areas
250,000+
First operational
test conducted
in 4 sites
Test sites in 36
counties in 26
states
Office that
evolved into the
ACS established
Testing basic
methods and
procedures
Expanded to full
sample of HUs in
all counties in 50
states, DC & PR
GQs
added
First 3-yr est
released for
areas 20,000+
Demonstrating First 1-yr est
operational
released for
feasibility and areas 65,000+
survey quality
First 1-year est
released for
Health Insurance
American Community Survey
Foundation of Census Operations
2010 Census
Population
Estimates
Program
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American
Community
Survey
American Community Survey
Developing the ACS
The ACS was developed to:
1. Focus the decennial census on improving the
population count
2. Provide characteristic data more than once every 10
years
3. Allow use of more current data to measure change
and detect trends
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American Community Survey
2010 Census and the ACS
2010 Census
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ACS
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U.S. population count
U.S. population characteristics
Short form only
Includes same short form
questions as well as detailed
characteristic questions
“Usual residence” rule
“Current residence” rule
American Community Survey
Content
Social
Economic
Housing
Demographic
Education
Income
Own/rent
Sex
Marital status
Benefits
Occupancy
Age
Grandparent caregivers
Employment status
Structure
Race
Fertility
Occupation
Housing value
Hispanic origin
Veterans
Industry
Taxes
Disability status
Commuting
Insurance
Place of birth
Place of work
Utilities
Citizenship
Year of entry
Language spoken at home
Ancestry/tribal affiliation
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Mortgage/rent
American Community Survey
Methodology
• Resident population of the United States
Housing units
Group quarters (GQ)
• Annual initial sample size
3 million housing units
20,000 GQ facilities
• Annual number of persons interviewed
4.5 million people from 2 million housing units
145,000 people in 20,000 GQ facilities
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American Community Survey
Data Collection
• Collected in each of the 3,141 counties in U.S.
• Three month process
• Three modes of data collection
Mail
Phone
Personal visit
• Data collected continuously throughout the year
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American Community Survey
Types of Estimates
Publication thresholds 1-year estimates 3-year estimates 5-year estimates
65,000+ people
20,000+ people
Less than 20,000 people
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X
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American Community Survey
Types of Estimates
Type of estimate
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Year(s)
Population threshold
1-year
2009
65,000+
3-year
2007, 2008, 2009
20,000+
5-year
2005, 2006, 2007, 2008, 2009
n/a*
American Community Survey
Data Release Schedule
Data Product
Population Size
of Area
2006
1-Year Estimates
for Data Collected in:
65,000+
3-Year Estimates
for Data Collected in:
20,000+
5-Year Estimates
for Data Collected in:
All Areas*
2005
2007
2008
Data released in:
2009
2010
2011
2012
2013
2006
2007
2008
2010
2011
2012
2009
2005-2007 2006-2008 2007-2009 2008-2010 2009-2011 2010-2012
2005-2009 2006-2010 2007-2011 2008-2012
* Five-year estimates will be available for areas as small as census tracts and block groups.
Source: US Census Bureau
Hypothetical Situation:
Data Product
2010 Census Long Form
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Population Size
of Area
2006
All Areas
2007
2008
Data released in:
2009
2010
2011
2012
x
2013
American Community Survey
Data Quality
• Goal of the ACS: Produce data of comparable quality to
Census 2000 long form
• ACS 5-year data
– Sampling error is larger in ACS due to smaller sample
size
– Non-sampling error is smaller due to:
• Lower rate of nonresponse
• Higher item response rates
• Permanent interviewing staff using automated data collection
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American Community Survey
Period Estimates
• Describe the average characteristics over a specific
period of time
• Contrast with point-in-time estimates
– Do not describe the characteristics on a specific date
• Period is 1 year, 3 years, or 5 years for ACS
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American Community Survey
Understanding Period Estimates
From The Washington Post:
“…were compiled from three years of responses
from the Census Bureau's American Community Survey,
which collects information from more than 250,000
households a month. The recently released data cover
2005 to 2007, with information [for] locations with as few as
20,000 residents.”
Source: Weiss, E.M. A Dubious Distinction: The Longest Ride in U.S. The Washington Post. February 3, 2009:A01.
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American Community Survey
ACS during 2010 Census
• Operations will continue uninterrupted during 2010
Census data collection
– Some people will receive both the 2010 Census and
ACS questionnaires at the same time
– Some people will receive visits from both 2010
Census enumerators and ACS field representatives
– The 10 questions on the 2010 Census are exactly the
same on the ACS questionnaire
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American Community Survey
New Content
• 3 new subjects added to 2008 ACS
– Marital History
– Health Insurance
– Service Connected Disability
• Data only available for 1-year data
– 3 year data available in 2008-2010 estimates
• 1 new subject added to 2009 ACS
– Field of Degree
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American Community Survey
Changes to Disability Measure
• 2008 disability data are NOT comparable with:
– Any previous ACS data (2007 and earlier)
– Census 2000
– Any previous disability estimate, including “with or
without a disability”
• No 3-year data on disability until 2008-2010 estimates
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American Community Survey
Data Products
• ACS includes a wealth of data
• ACS data products put these
data at the fingertips of those
who need them:
http://factfinder.census.gov
• Data Profiles
• Narrative Profiles
• Selected Population Profiles
• Ranking Tables
• Subject Tables
• Detailed Tables
• Geographic Comparison Tables
• Thematic Maps
• Custom Tables
• Summary File
• Public Use Microdata Samples
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Economic Census
• Provides a detailed portrait of the economy once every
five years, from the national to the local level
• Covers most of the U.S. economy in its basic collection
of establishment statistics
• Also several related programs, including statistics on minorityand women-owned businesses
• Business establishments are grouped into industries
based on the similarity of their production processes.
• Coded according to the North American Industry Classification
System (NAICS)
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Economic Census
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2007 Economic Census data sets released over time
Data released in American FactFinder
Improved local area data
Improved Economy-Wide Key Statistics (EWKS)
Revised industry classifications
North American Product Classification System (NAPCS)
New data:
• Pension and Other Fringe Benefits
• Franchising
• Survey of Business Owners
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