Planning, financing and coordinating transportation
for the Cities of Stockton,
Lodi, Manteca, Tracy, Ripon, Escalon and Lathrop; and the County of San Joaquin.

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DATA SERVICES > Census

About The Census

Census 2000 Datasets

Every household in the country receives one of two census questionnaires: a short form or a long form. The data included in each Summary File depends upon which questionnaire it was compiled from. This data is the most commonly used census data. Summary Files (SF) 1 & 3

SF1 contains the most geographically detailed information (down to the block level). It comes from the “short form” or 100 percent count questionnaire. This file contains information about the population by ethnicity, age, and household composition, as well as housing information such as tenure and occupancy status.

SF3 data is from the “long form” or sample questionnaire (1 in 6 households received it). It is less geographically detailed (down to the block group level), but more comprehensive in terms of information available. In addition to the all the information collected from the short form, it has data such as marital status, income, and educational attainment.

Glossary of Census Terms

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