1 American Community Survey Accessing 2010 ACS 1-Year Estimates for Hawaii Jerry Wong Information Services Specialist Los Angeles Regional Office U.S. Census Bureau 6911

2 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 ACS 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 N=165,000 housing units 2000 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 2006 First 1-yr estimates released for areas 65, First 3-yr estimates released for areas 20,000+ First 5-yr estimates release for areas below 20,000

4 Developing 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 ACS 2010 CensusACS U.S. population countU.S. population characteristics Short form onlyIncludes short form questions Only long form is for U.S. territories, except Puerto Rico Conducted in Puerto Rico “Usual residence” rule“Current residence” rule

6 American Community Survey Content

7 Social Characteristics  Education  Marital Status  Fertility  Grandparent Caregivers  Veterans  Disability Status  Place of Birth  Citizenship  Year of Entry  Language Spoken at Home  Ancestry / Tribal  Affiliation

8 Economic Characteristics  Income  Benefits  Employment Status  Occupation  Industry  Commuting to Work  Place of Work

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

10 Demographic Characteristics  Sex  Age  Race  Hispanic Origin

11 Recent Content Changes  New Content Health Insurance Coverage 2.Veteran’s Service-connected Disability 3.Marital History Field of Undergraduate Degree  Wording and format changes in 2008 to match Census 2010 questions

New 2010 Tables Fertility Table IDTable Title B13015 Women 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 B13016 Women 15 To 50 Years Who Had A Birth In The Past 12 Months By Age

New 2010Tables Housing Characteristics Table IDTable Title B25028Tenure By Year Structure Built B25029Tenure By Year Householder Moved Into Unit B25090 Mortgage Status By Aggregate Real Estate Taxes Paid (Dollars) B25124Tenure By Household Size By Units In Structure B25125Tenure By Age Of Householder By Units In Structure B25126Tenure By Age Of Householder By Year Structure Built B25127Tenure By Year Structure Built By Units In Structure B25128 Tenure By Age Of Householder By Year Householder Moved Into Unit B25129 Tenure By Year Householder Moved Into Unit By Units In Structure

14 ACS 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)

15 Sample  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 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.

16 Target 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

17 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

18 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  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

19 Geographic Boundaries  Multiyear estimates are based on geographic boundaries as of January 1 of the last year in the multiyear period Example: ACS estimates use boundaries as of Jan 1, 2009  Boundary Annexation Survey collects boundary changes  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

20 American 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 Hawaii Geography Year Data 65,000+ Population Year Data 65,000+ Population Year Data 20,000+ Population Year Data including geographic levels below 20,000 Population StateHawaii 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 CountyHawaii 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 PlaceUrban Honolulu CDPHonolulu 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

22 ACS Data Release Schedule

23 American Community Survey Data Products Profiles  Data Profiles  Comparison Profiles  Selected Population Profiles Tables  Detailed Tables  Subject Tables  Ranking Tables  Geographic Comparison Tables

24 Understanding Estimates and Margin of Error

25 Estimates  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

26 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 Error

28 Inflation 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

29 Population 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 Controls The 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.Change in Population Controls

ACS Data Products are Available Through the American FactFinder (AFF) on

Click factfinder2.census.gov

Different Options to Conduct Your Search

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

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

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.

You are now on the Search page, Honolulu County is in Your Selections box 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 tables are on this page

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

Filtering Tables by Topic Program – American Community Survey

Filtering Tables by Topic Data Set – Select 2010 ACS

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

45 Select A Geographic Type County

Honolulu County Selected Economic Characteristics Social Profile Economic Profile Housing Profile Demographic Profile Narrative Profile

Honolulu County Selected Housing Characteristics Social Profile Economic Profile Housing Profile Demographic Profile Narrative Profile

Honolulu County Demographic & Housing Estimates Social Profile Economic Profile Housing Profile Demographic Profile Narrative Profile

Comparison Profiles Display Multiple Years Worth of Data & Indicate Where There are Statistically Significant Differences

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

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

Ranking Tables Provide State-Level Rankings of Key ACS Variables 108 Ranking Tables Available ACS Population Estimates SF1

Select Product Type: Ranking Tables

Ranking Tables Select R2510 Median Value of Owner-Occupied Housing Units Select R2514 Median Monthly Housing Costs for renter-Occupied Housings Units

Click Hawaii Ranks #1 $525,400

Hawaii Ranks #1 $1,291

57 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 Tables

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

60 Table B01001 Sex by

Filtering Tables by Topic People - ACS

Filtering Tables by Topic Housing - ACS

63 U.S. Census Bureau Partnership & Data Services Program Sherman Way, Suite 400 Van Nuys, CA (888) Toll Free (888) Toll Free L.A. Regional Website: L.A. Regional Website: Resources: Need Assistance?