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American Community SurveyAmerican Community Survey

Accessing 2010 ACS 1-Year Estimates for HawaiiAccessing 2010 ACS 1-Year Estimates for Hawaii

Jerry WongJerry WongInformation Services SpecialistInformation Services SpecialistLos Angeles Regional OfficeLos Angeles Regional Office

U.S. Census BureauU.S. Census Bureau

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What is the American Community Survey?What is the American Community Survey?

A large, continuous survey that: is sent to 3 million resident addresses per year

produces characteristics of population and housing

produces estimates for small areas and small population groups

Produces characteristics, not a population count

Key component of the decennial census program

History and Timeline of the ACSHistory and Timeline of the ACS

19811981 19

991999

19901990 20

102010

19941994

Continuous measurement conceptualized

Congress renewed interest in an alternative to the once-a-decade census

Work began on what evolved into the ACS

First operational test conducted in 4 sites

Test sites expanded yearly to 36 counties in 26 states

19951995

20052005

N=165,000 housing units

20002000

N=866,000 housing units in 1,239 counties

N=3,000,000 housing units in all counties in 50 states, DC & PR

Group Quarters added

20062006

First 1-yr estimates released for areas 65,000+

20082008

First 3-yr estimates released for areas 20,000+

First 5-yr estimates release for areas below 20,000

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Developing the ACSDeveloping the ACS

The ACS was developed to:

1. Focus the 2010 Census on improving the population count

2. Provide characteristic data more than once every 10 years to frame policy issues

3. Allow use of current data to respond to new trends

2010 Census and the ACS2010 Census and the ACS

2010 Census ACS

• U.S. population count • U.S. population characteristics

• Short form only • Includes short form questions

• Only long form is for U.S. territories, except Puerto Rico

• Conducted in Puerto Rico

• “Usual residence” rule • “Current residence” rule

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American Community Survey ContentAmerican Community Survey Content

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Social CharacteristicsSocial Characteristics

Education Marital Status Fertility Grandparent

Caregivers Veterans Disability

Status

Place of Birth Citizenship Year of Entry Language Spoken at Home Ancestry / Tribal Affiliation

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EEconomic Characteristicsconomic Characteristics

Income Benefits Employment Status Occupation Industry Commuting to Work Place of Work

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Housing CharacteristicsHousing Characteristics

Tenure (own vs. rent) Occupancy & Structure Housing Value Taxes & Insurance Utilities Mortgage/Monthly Rent

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Demographic CharacteristicsDemographic Characteristics

Sex Age Race Hispanic Origin

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Recent Content ChangesRecent Content Changes New Content

2008

1. Health Insurance Coverage

2. Veteran’s Service-connected Disability

3. Marital History

2009

1. Field of Undergraduate Degree

Wording and format changes in 2008 to match Census 2010 questions

New 2010 Tables New 2010 Tables FertilityFertility

Table ID Table Title

B13015Women 15 To 50 Years Who Had A Birth In The Past 12 Months By Marital Status And Receipt Of Public Assistance In The Past 12 Months

B13016Women 15 To 50 Years Who Had A Birth In The Past 12 Months By Age

New 2010Tables New 2010Tables Housing CharacteristicsHousing Characteristics

Table ID Table TitleB25028 Tenure By Year Structure Built

B25029 Tenure By Year Householder Moved Into Unit

B25090Mortgage Status By Aggregate Real Estate Taxes Paid (Dollars)

B25124 Tenure By Household Size By Units In Structure

B25125 Tenure By Age Of Householder By Units In Structure

B25126 Tenure By Age Of Householder By Year Structure Built

B25127 Tenure By Year Structure Built By Units In Structure

B25128Tenure By Age Of Householder By Year Householder Moved Into Unit

B25129Tenure By Year Householder Moved Into Unit By Units In Structure

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ACS Sample DesignACS Sample Design

Sample is accumulated over TIME to produce lowest levels of geographic detail to replace census sample

5 years of data are required for areas and population groups with less than 20,000 population

Sample cases selected from an updated Master Address File (MAF)

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SampleSample

Questionnaires mailed to about 1 in 480 addresses each month throughout the U.S. and Puerto Rico.

1 in 40 addresses per year (2.5% of the population). Average of 500-600 addresses per month per

congressional district. Total of 3 million addresses each year, or 250,000

per month. Inclusion of population in group quarters beginning

in 2006.

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Target PopulationTarget Population

Resident population of the United States and Puerto Rico

Living in housing units and group quarters (group quarters added in 2006)

Current residents at the selected address

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Methodology Methodology

Sample includes about 3 million addresses each year

Three modes of data collection– mail– phone– personal visit

Data are collected continuously throughout the year

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Period EstimatesPeriod 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

1 Year Estimates Geographic areas with 65,000 or more population

3 Year Estimates Geographic areas with more than 20,000 population

5 Year Estimates All geographic areas down to the census tract & block group level

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Geographic BoundariesGeographic Boundaries Multiyear estimates are based on geographic

boundaries as of January 1 of the last year in the multiyear period

Example: 2007-2009 ACS estimates use boundaries as of Jan 1, 2009Boundary Annexation Survey collects boundary Boundary Annexation Survey collects boundary

changeschanges

Boundaries of other statistical areas will be updated every decade in conjunction with the decennial census

2010 Census boundaries will be used for data released in 2011

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American Community Survey GeographyAmerican Community Survey Geography

The 2010 ACS data release marks the first time ACS will

use 2010 tabulation geography for most statistical areas, the same definitions as the 2010 Census.

Geographic areas whose definitions were updated for the 2010 Census include Census Designated Places (CDPs), census tracts, and block groups.

2010 ACS estimates for PUMAs and urban areas continue to use Census 2000 definitions.

ACS Data for Geographic Areas in HawaiiACS Data for Geographic Areas in Hawaii

Geography2010 1-Year Data

65,000+ Population

2009 1-Year Data

65,000+ Population

2007-2009 3-Year Data

20,000+ Population

2005-2009 5-Year Data including geographic levels

below 20,000 Population

State Hawaii Hawaii Hawaii

Hawaii; In various metro or micropolitan statistical areas

Hawaii; Urban

Hawaii; Rural

Hawaii

Hawaii; In various metro or micropolitan statistical areas

Hawaii; Urban

Hawaii; Rural

County Hawaii County

Honolulu County

Kauai County

Maui County

Hawaii County

Honolulu County

Maui County

Hawaii County

Honolulu County

Maui County

Kauai County

Hawaii County

Honolulu County

Maui County

Kauai County

Kalawao County

Place Urban Honolulu CDP Honolulu CDP Honolulu CDP

Hilo CDP

Kahului CDP

Kailua CDP

Kaneohe CDP

Kihei CDP

Mililani Town CDP

Pearl City CDP

Waimalu CDP

Waipahu CDP

Hawaii County: 42 CDPs

Honolulu County: 46 CDPs

Kauai County: 22 CDPs

Maui County: 21 CDPs

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ACS Data Release ScheduleACS Data Release Schedule

Data Product Population Size Data released in: of Area 2006 2007 2008 2009 2010 2011 2012

1-Year Estimates 65,000+ 2005 2006 2007 2008 2009 2010 2011for Data Collected in:

3-Year Estimates 20,000+ 2005-2007 2006-2008 2007-2009 2008-2010 2009-2011for Data Collected in:

5-Year Estimates All Areas* 2005-2009 2006-2010 2007-2011for Data Collected in:

Data Product Population Size Data released in: of Area 2006 2007 2008 2009 2010 2011 2012

1-Year Estimates 65,000+ 2005 2006 2007 2008 2009 2010 2011for Data Collected in:

3-Year Estimates 20,000+ 2005-2007 2006-2008 2007-2009 2008-2010 2009-2011for Data Collected in:

5-Year Estimates All Areas* 2005-2009 2006-2010 2007-2011for Data Collected in:

* Five-year estimates will be available for areas as small as census tracts and block groups.Source: US Census Bureau

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American Community Survey Data ProductsAmerican Community Survey Data Products

Profiles Data ProfilesData Profiles Comparison ProfilesComparison Profiles Selected Population ProfilesSelected Population Profiles

Tables Detailed TablesDetailed Tables Subject TablesSubject Tables Ranking TablesRanking Tables Geographic Comparison TablesGeographic Comparison Tables

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Understanding Estimates Understanding Estimates and Margin of Errorand Margin of Error

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EstimatesEstimates

ACS data are estimates

ACS data are not counts of the population or housing

Population counts are produced from the decennial census

- Counts are updated throughout the decade through the Population Estimates Program

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Margin of Error (MOE)Margin of Error (MOE)

Margin of Error Definition: A measure of the precision of an estimate at a given level of confidence (90%, 95%, 99%) -- MOEs at the 90% confidence level for all published ACS estimates

Confidence Interval Definition: A range that is expected to contain the population value of the characteristic with a known probability

Margin of ErrorMargin of Error

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Inflation AdjustmentInflation Adjustment

Dollar-valued data items are inflation adjusted to the most recent year for the period

Income, rent, home value, and energy costs

Adjusted using inflation factors based on the Consumer Price Index (CPI)

Adjustment designed to put the data into dollars with equal purchasing power

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Population ControlsPopulation Controls

Estimates of housing units and people are controlled to the population estimates derived from the Population Estimates Program

Multi-year estimates are controlled to the average of the individual year’s estimates for the period

Change in Population ControlsChange in Population ControlsThe 2009 ACS and 2010 ACS 1-year estimates use different Census base years for the population estimates used in the ACS weighting. As a result, users should use caution when making comparisons across years. Specifically, estimates of the number of people in a given location (population size) are not strictly comparable between these two years. In general, the change to more current population estimates is not expected to have a meaningful impact in the percent distributions, rates, or ratios for non-demographic characteristics for many of the largest geographic areas. The Census Bureau is currently researching the effect on these distributions. For more details, visit the ACS Research Note Change in Population Controls.

ACS Data Products are Available Through ACS Data Products are Available Through the American FactFinder (AFF) on www.census.govthe American FactFinder (AFF) on www.census.gov

Click factfinder2.census.govClick factfinder2.census.gov

Different Options to Conduct Your SearchDifferent Options to Conduct Your Search

Note: You are on the Main Page and the Note: You are on the Main Page and the Your Selections box is emptyYour Selections box is empty

Using Quick Start, Enter Honolulu County, Hawaii Using Quick Start, Enter Honolulu County, Hawaii in the Geography Box, then click GOin the Geography Box, then click GO

Note: As you start typing, a drop down menu appears with possible Note: As you start typing, a drop down menu appears with possible geography options. You may select one of the options by clicking on it.geography options. You may select one of the options by clicking on it.

You are now on the Search page, Honolulu County is in Your Selections You are now on the Search page, Honolulu County is in Your Selections box and all the tables available are listed under the Search Resultsbox and all the tables available are listed under the Search Results

To View a Table:• Double Click on the Link OR• Check the Box next to the Table and Click “View”A few ACS tablesare on this page

……Or use Topics to narrow your SearchOr use Topics to narrow your SearchFor ACS go to Program or Data Set For ACS go to Program or Data Set

Filtering Tables by TopicFiltering Tables by TopicProgramProgram – American Community Survey – American Community Survey

Filtering Tables by TopicFiltering Tables by TopicData Set Data Set – Select 2010 ACS– Select 2010 ACS

Filtering Tables Population GroupsFiltering Tables Population Groups

Before beginning a new search, • Clear all selections from the Your Selections Box• Click on MAIN to return to the Main Page

Data ProfilesData Profiles Display a Range of Social, Economic, Housing, Display a Range of Social, Economic, Housing, and Demographic Data for a Particular Geographic Areaand Demographic Data for a Particular Geographic Area

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Select A Geographic TypeSelect A Geographic TypeCountyCounty

Honolulu County Selected Economic CharacteristicsHonolulu County Selected Economic Characteristics

Social ProfileEconomic ProfileHousing ProfileDemographic ProfileNarrative Profile

Honolulu County Selected Housing CharacteristicsHonolulu County Selected Housing Characteristics

Social ProfileEconomic ProfileHousing ProfileDemographic ProfileNarrative Profile

Honolulu County Demographic & Housing EstimatesHonolulu County Demographic & Housing Estimates

Social ProfileEconomic ProfileHousing ProfileDemographic ProfileNarrative Profile

Comparison ProfilesComparison Profiles Display Display MultipleMultiple Years Worth of Data & Years Worth of Data & Indicate Where There are Statistically Significant DifferencesIndicate Where There are Statistically Significant Differences

Comparison ProfilesComparison Profiles Select Geographic Type “Place” to Obtain Data for Honolulu CDPSelect Geographic Type “Place” to Obtain Data for Honolulu CDP

Comparison ProfilesComparison Profiles Honolulu CDP Comparative Data for Years 20010, 2009, 2008, 2007,2006 Honolulu CDP Comparative Data for Years 20010, 2009, 2008, 2007,2006

Social Characteristics Social Characteristics

Ranking TablesRanking Tables Provide Provide State-LevelState-Level Rankings of Key ACS VariablesRankings of Key ACS Variables

108 Ranking Tables Available

87 2010 ACS 14 2008 Population Estimates 7 2000 SF1

Select Product Type: Ranking TablesSelect Product Type: Ranking Tables

Ranking TablesRanking TablesSelect R2510 Median Value of Owner-Occupied Housing UnitsSelect R2510 Median Value of Owner-Occupied Housing Units

Select R2514 Median Monthly Housing Costs for renter-Occupied Housings UnitsSelect R2514 Median Monthly Housing Costs for renter-Occupied Housings Units

Click

Hawaii Ranks #1$525,400

Hawaii Ranks #1$1,291

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Detailed Tables (Base Tables)Detailed Tables (Base Tables)

Basic distributions of characteristics

The foundation upon which other data products are built

Show estimates with its margin of error. By adding and subtracting the margin of error from the point estimate, you produce the range around it called the confidence interval. (there is 90% certainty that the true answer lies within the listed upper and lower percentages).

Go to Product Type and Select Detailed TablesGo to Product Type and Select Detailed Tables

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Select a Table: B01001 Sex by Age and click ViewSelect a Table: B01001 Sex by Age and click View

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Table B01001 Sex byTable B01001 Sex by

Filtering Tables by TopicFiltering Tables by TopicPeoplePeople - ACS - ACS

Filtering Tables by TopicFiltering Tables by TopicHousingHousing - ACS - ACS

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U.S. Census BureauU.S. Census BureauPartnership & Data Services ProgramPartnership & Data Services Program

15350 Sherman Way, Suite 40015350 Sherman Way, Suite 400Van Nuys, CA 91406Van Nuys, CA 91406

(888) 806-6389 Toll Free(888) 806-6389 Toll Free

L.A. Regional Website: www.census.gov/losangelesL.A. Regional Website: www.census.gov/losangeles laro.isp-partnership@census.govlaro.isp-partnership@census.gov

Jerry.B.Wong@census.govJerry.B.Wong@census.gov

Resources: Need Assistance?Resources: Need Assistance?