Work with interactive mapping tools from across the Census Bureau.
Read briefs and reports from Census Bureau experts.
Watch Census Bureau vignettes, testimonials, and video files.
Read research analyses from Census Bureau experts.
Developer portal to access services and documentation for the Census Bureau's APIs.
Explore Census Bureau data on your mobile device with interactive tools.
Find a multitude of DVDs, CDs and publications in print by topic.
These external sites provide more data.
Download extraction tools to help you get the in-depth data you need.
Explore Census data with interactive visualizations covering a broad range of topics.
Information about the U.S. Census Bureau.
Information about what we do at the U.S. Census Bureau.
Learn about other opportunities to collaborate with us.
Explore the rich historical background of an organization with roots almost as old as the nation.
Explore prospective positions available at the U.S. Census Bureau.
Information about the current field vacancies available at the U.S. Census Bureau Regional Offices.
Discover the latest in Census Bureau data releases, reports, and events.
The Census Bureau's Director writes on how we measure America's people, places and economy.
Find interesting and quirky statistics regarding national celebrations and major events.
Find media toolkits, advisories, and all the latest Census news.
See what's coming up in releases and reports.
Online access to Survey of Program Dynamics data.
Availability: CD-ROMs containing detailed microdata from the Survey of Program Dynamics (SPD). Microdata files include information at the person, family, or household level with identifying information removed to protect the confidentiality of the records. Technical documentation in PDF format and on the CD-ROMs.
Subject content: The Survey of Program Dynamics is a longitudinal, demographic survey designed to collect data on the economic, household, and social characteristics of a nationally representative sample of the U.S. population over time. It collects data on age, sex, race, Hispanic origin, marital status, education, veteran status, work status, income, and non-cash benefits (e.g., food stamps).
The survey measures the impact of welfare reform legislation on welfare participants and compares their situations with the rest of the country.
It was designed to create a longitudinal database spanning a ten-year period, with three components: information collected in the 1992 and 1993 panels of the Survey of Income and Program Participation; information collected in 1997 using a modified version of the March Current Population Survey; and information collected from 1998 to 2002 using the SPD instrument.
File format: Compressed ASCII with no software. Note: Files can be unzipped using standard unzipping software such as that found at www.pkware.com.
Census contact: Customer Services (orders) 301-763-INFO (4636); Demographic Surveys Division, Continuing Surveys Branch (content) 301-763-1616.
Survey of Program Dynamics Cross-Sectional File: 2002 | C1-P02-SPDC-06-US1
Survey of Program Dynamics Cross-Sectional File: 2001 | C1-P01-SPDC-03-US1
Survey of Program Dynamics Cross-Sectional File: 2000 | C1-P00-SPDC-03-US1
Survey of Program Dynamics Cross-Sectional File: 1999 | C1-P99-SPDC-06-US1
Survey of Program Dynamics Experimental File: 1998 | C1-P98-SPDX-03-US1
Survey of Program Dynamics Experimental File: 1997 | C1-P97-SPDX-03-US1
Survey of Program Dynamics Second Longitudinal File: 1992-1994 & 1996-1999 | C1-P99-SPDL-06-US1
Survey of Program Dynamics First Longitudinal File: 1992-1994 & 1996-1997 | C1-P92-SPDL-04-US1