Like us on FacebookFollow us on Twitter  Find us on Facebook and Twitter





Welcome to the CDXZipStream January 2015 Newsletter


CDXZipStream data feeds from the American Community Survey for state, county, ZCTA (ZIP Code), place, and CBSA geographies have been updated to include the latest data from the Census Bureau.  We also answer some frequently-asked questions about the ACS data.

ACS Data Feeds Updated with Latest Census Data


The CDXZipStream ACS data feeds for state, county, ZIP code (ZCTA), place, and CBSA (Core-Based Statistical Area) have been updated with the latest data releases from the U.S. Census Bureau. These data are from the American Community Survey, which surveys about 1 out of every 38 households every year. These feeds are available in the CDXZipStream Premium Version and cover the following:


CDXACSState - Covers all states in the U.S. and Puerto Rico.


CDXACSCounty - Covers all counties in the U.S. and Puerto Rico.


CDXACSZCTA - For Census-defined ZIP Code Tabulation Areas in the U.S.and Puerto Rico, very similar to USPS ZIP Codes.


CDXACSPlace - Covers all Census-defined "places" such as cities, towns, boroughs, and other small geographic areas. This feed includes all places in the U.S. and Puerto Rico with a population of 20,000 or more.


CDXACSCBSA - For Core Based Statistical Areas in the U.S. and Puerto Rico, which are urban centers with a population of 10,000 or more.


All feeds have been updated with the latest 5-year combined data from 2009 through 2013, except state data which have been updated with the latest 1-year data from 2013.


The demographic areas covered in all ACS feeds are: age, population, household size, household income, individual earnings, race and ethnicity, educational attainment, school enrollment, housing value and rent, mortgage status, and marital status. For a full listing of all data fields included in the feeds, please download the CDXZipStream Data Feed and Definitions file here.


If you already own CDXZipStream ACS Premium, you can update your data feeds by logging into your on-line account on and under My Account and Product Management, selecting "Buy Data Update".   To upgrade your current license to the CDXZipStream ACS Premium version, select "Upgrade License" in the account area and follow the purchasing process. The latest data will automatically be included with your purchase.


FAQs About the American Community Survey

Here are a few questions that frequently come up about our data feeds from the American Community Survey:


Why can't all feeds use the latest data from 2012? The American Community Survey only surveys a portion of the population every year, and one year does not provide enough data to provide a statistically significant result for the smaller geographies. Data for ZCTA's for example, are only provided over a five-year range, where all data are combined over this time period.


What is the difference between a ZIP Code and ZCTA?    ZIP Code areas are defined by the US Postal Service to facilitate mail delivery, and do not align with any census geography.  ZIP Codes are approximated by combining data from smaller US Census Bureau-defined blocks into areas called ZCTAs (ZIP Code Tabulation Areas).  They are generally a very good, but not perfect, match.


Why isn't my ZIP Code listed?  In creating ZCTAs, the Census Bureau uses the most frequently occurring ZIP Code for the addresses in each census block. If a ZIP Code covers only a few addresses, and is not the most frequently occurring ZIP Code in a block, it will not be assigned a ZCTA.  Also, in most cases PO Box Only ZIP Codes are not assigned ZCTAs.


Why is there no population shown for my ZIP Code? ZCTA's can includes both residential and commercial addresses.  Commercial areas, or unique areas such as college campuses, may not have a household population.


Why don't all the population fields add up to the total population? The Census Bureau considers Hispanics to form an ethnicity, rather than a race, and do not include them as part of the race population data. Adding Hispanic and non-Hispanic population fields, however, will match the total population.


Why isn't my town (or place) listed?  The CDXACSPlace data feed covers towns, cities, boroughs etc. for populations of 20,000 or more. Although the Census Bureau does provide data for about 30,000 places, we have not included them all in order to keep the ACS database to an easily downloadable size.



Latest Data Updates


Canadian and U.S. data feeds were updated as of January 28.  There were 77 changes made to the U.S. database this month.  If you would like to update your database to reflect these changes, click on the "License Information and Software Updates" icon on the CDXZipStream toolbar, and select "Data Updates" to login to your account.


We hope you find the information here helpful for you and your organization.  Please contact us with your feedback and suggestions by replying to this email.


The Team at CDX Technologies 

January 2015



Map of the World


In This Issue 


ACS Data Feeds Updated with Latest Census Data


FAQs About the American Community Survey 


Data Updates







CDXStreamer 2.0.26 Demo