Population data for Texas are provided by the Texas State Data Center, Population Estimates and Projections Program. The Texas State Data Center (TxSDC) web site provides a detailed discussion of its methodology and programs. Texas Health and Human Services Commission (HHSC) is responsible for coordinating population data among HHSC agencies, including Texas Department of State Health Services.
Texas Health Data
offers both estimates and projections for all Texas counties by age
group, gender and race/ethnicity in the following series.
The user of the data presented here should be aware that HHSC and Texas Department of State Health Services use population data from two Texas State Data Center programs, Estimates and Projections. Briefly, estimates through 1999 are based on revisions of 1990 census data to reflect birth and death trends. Population estimates for 2001 through 2009 are based on 2000 census data updated to reflect currently available data on births, deaths and other public information. Projections extend from 2013 through 2020; they are produced using a model of projected births, deaths, and migration rather than actual records. Both estimation and projection models use estimates of migration rates. These estimated migration rates are produced by the TxSDC using several migration scenarios. This results in more than one projection series. HHSC has designated the "2000 - 2010 Migration Scenario" to be the current standard for HHSC agency population projections. See the SDC site for more information on migration scenarios.
Most programs at DSHS use population estimates for the years for which they are available, and projections for subsequent years (currently 2013 onwards). Each year, as the State Data Center provides new estimates, based on newly available demographic data, the set of projections for that year is replaced by the new estimates. In addition, periodically, both the estimates and the projections may be updated for a whole series of years.
Because each series is produced by different methods, different years may not follow smoothly from one series to the next. If the data are to be used in trend analysis, or other comparative treatments, unexpected results may be obtained if data from different series are used. In addtion, race/ethnicity categories are defined differently for each decade. Please see the CHS FAQ for more information.
Last Updated May 6, 2014.