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From page 6... ... In addition, this section describes the key elements of the plan for implementing the full-scale ACS, and how these elements of the ACS program may affect ACS data analyses -- particularly those analyses related to transportation planning applications. 2.1 ACS Implementation The Census Bureau first described their plans for fully implementing ACS in the American Community Survey Operations Plan and in associated website documents.1 These plans have evolved as a result of ACS testing and federal appropriations processes. Read the entire page →
From page 7... ... data collection phase. • Implementation of data entry and telephone follow-up procedures for mail returns; American Community Survey 7 County Pima County, Arizona Jefferson County, Arkansas Tulare County, California Upson County, Georgia Miami County, Indiana Black Hawk County, Iowa DeSoto Parish, Louisiana Calvert County, Maryland Hampden County, Massachusetts Madison County, Mississippi Iron County, Missouri Reynolds County, Missouri Washington County, Missouri Flathead County, Montana Lake County, Montana Douglas County, Nebraska Otero County, New Mexico Rockland County, New York 1999-2001 Annual Sampling Rate 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% County Multnomah County, Oregon 1999-2001 Annual Sampling Rate 5% Fulton County, Pennsylvania Schuylkill County, Pennsylvania Sevier County, Tennessee Starr County, Texas Zapata County, Texas Petersburg City, Virginia Yakima County, Washington Ohio County, West Virginia Oneida County, Wisconsin Vilas County, Wisconsin San Francisco County, California Broward County, Florida Lake County, Illinois Bronx Borough, New York Franklin County, Ohio Fort Bend County, Texas Harris County, Texas 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3% 3% 3% 3% 3% 1% 1% Table 2.1. Read the entire page →
From page 8... ... In addition, ACS field representatives note any address corrections found in visiting housing units during the personal visit non-response follow-up data collection phase. The Census Bureau also performs systematic listing and mapping of selected areas to support several of their data collection efforts. Read the entire page →
From page 9... ... In the future, the Census Bureau also will consider additional over sampling of certain counties to try to improve the reliability of estimates of geographically dispersed small minority population groups (such as Native Hawaiians and other Pacific Islanders, Asians, or American Indians and Alaska Natives) living in urban areas, but these changes would not be made until the current over sampling scheme for mail survey response is fully analyzed. Read the entire page →
From page 10... ... The current residence concept suits the ACS, because the ACS continuously collects information from monthly samples throughout the year. The current residence concept recognizes that people can live in more than one place over the course of a year, and that population traits for some areas may be noticeably affected by these shifts. Read the entire page →
From page 11... ... If no response is received from an address after three weeks, a replacement mailing package is sent. Currently, only English American Community Survey 11 Sample Drawn from MAF Valid Mailed Address? Read the entire page →
From page 12... ... As shown in Figure 2.2, the collection of data from the monthly sample panels overlaps 12 A Guidebook for Using American Community Survey Data for Transportation Planning MailJun 2009 PhoneMailMay 2009 VisitPhoneMailApr 2009 VisitPhoneMailMar 2009 VisitPhoneMailFeb 2009 VisitPhoneMailJan 2009 Jul 2009Jun 2009May 2009Apr 2009Mar 2009Feb 2009Sample Panel Calendar Month Source: David Hubble, Census Bureau Presentation at [Irvine] Read the entire page →
From page 13... ... phase of the data collection, but then were never contacted as part of the personal visit phase of the data collection. Since the data collection effort is not completed for this group, the Census Bureau uses a weighted response rate that effectively discounts this group in the response rate calculation. Read the entire page →
From page 14... ... Coding In the coding phase of the ACS data collection, questionnaire fields with write-in values are coded to a prescribed list of valid values. Manual coding methods are used to assign codes for industry and occupation, and automated coding programs are used to assign codes for the following: • Place of birth, • Migration, • Ancestry, • Language, • Race, 14 A Guidebook for Using American Community Survey Data for Transportation Planning Source: David Hubble, TRB Conference: Census Data for Transportation Planning, May 2005, Irvine, CA. Read the entire page →
From page 15... ... The allocation procedures used both trip data and job data to assign workplace locations using "standard allocation" and "extended allocation." Standard allocation used travel time, residence tract, means of transportation, and industry to code work locations to a state, county, and place geocode. In addition, many records were allocated down to the block group and traffic analysis zone (TAZ) Read the entire page →
From page 16... ... Table 2.4 shows that a number of workers from zero-vehicle households were allocated to driving alone for their commute to work. While 16 percent of the weighted respondents from households without vehicles said they "drove alone" to work, almost 60 percent of the workers who reported that they did not have a vehicle and that did not report a mode to work were assigned by Census Bureau procedures to 16 A Guidebook for Using American Community Survey Data for Transportation Planning Imputation Ratesa Description Census 2000 Number of Vehicles Available 6.2 Place of Birth 10.1 Citizenship 0.8 Previous Residenceb Mobility Status 6.9 Previous Residence Geography (One or More Parts) Read the entire page →
From page 17... ... ACS users will need to understand that the reported changes in the ACS data for decennial census years and the previous years are likely to be affected by larger than normal changes in the underlying population estimates by race/ethnicity, age, and sex. The Census Bureau population estimates for previous years are revised when new decennial census count data become available, but the ACS estimates will not be revised. Read the entire page →
From page 18... ... . it is critical for Census Bureau to provide users with guidance on topics such as reliability of multiyear averages for areas with rapidly changing populations, reliability of trends calculated from annual changes in multiyear averages, and the use of multiple estimates from ACS data for geographic areas with populations greater than 20,000." 18 A Guidebook for Using American Community Survey Data for Transportation Planning 8 GAO-05-82, October 2004. Read the entire page →
From page 19... ... Cohen, and Benjamin F King, editors, Panel on Research on Future Census Methods, National Research Council, "Reengineering the 2010 Census: Risks and Challenges."10 This study examined the Census Bureau's current plans for a reengineered Census 2010 with MAF/TIGER enhancements, American Community Survey, and Early Integrated Planning as its core concepts. Read the entire page →
From page 20... ... . 20 A Guidebook for Using American Community Survey Data for Transportation Planning 11 Constance F Read the entire page →
From page 21... ... American Community Survey 21 Read the entire page →

From page 6...

... In addition, this section describes the key elements of the plan for implementing the full-scale ACS, and how these elements of the ACS program may affect ACS data analyses -- particularly those analyses related to transportation planning applications. 2.1 ACS Implementation The Census Bureau first described their plans for fully implementing ACS in the American Community Survey Operations Plan and in associated website documents.1 These plans have evolved as a result of ACS testing and federal appropriations processes.