Impact of Undocumented Populations on 2010 Congressional Reapportionment

     On September 20th, 2007, CtSDC released a report covering two scenarios for the 2010 Apportionment of seats in the U.S. House of Representatives.                    
Click on each image for printable PDF.

House Seat Allocation When Undocumented Residents are Included
The first scenario assumes that Census 2010 counts all undocumented residents in all states. Our findings indicate that the settlement pattern of undocumented populations will increase Congressional seats in Southern border states (AZ, TX, FL) while Northern and Midwestern states (MI, IL, MO, OH, NY) will lose seats.

     A concurrent finding is that undocumented populations appear to distort the relative voting power of all citizens nationwide. This occurs because in some states each Congressional seat would represent fewer citizens who can vote in proportion to states that lack settlement from undocumented persons.

House Seat Reallocation if Undocumented Residents were Excluded
The second scenario assumes that undocumented residents might not be included in the count for U.S. Representative apportionment. In this scenario, six Northern and Midwestern states (MA, NY, NJ, PA, OH and IA) lose only six seats between them. Exclusion of undocumented poulations could (1) mute the geographic shift shown in Map 4 and (2) have only Florida gain another seat.


Posted August 26 - Dec. 17, 2007>

Coordinate Local Update of Census Addresses (LUCA) in Your Community

August 26 - Dec. 12, 2007

          Preparing for 2010 Census in Connecticut

            2007 LUCA invitation & Registrations mailed to towns - 8/07/2007
LUCA Tech Training in Connecticut: 8/15/07 - 9/30/07
LUCA Registrations - Critical date: Nov. 19, 2007 / Final deadline: Dec. 31, 2007
LUCA Address Collection from Municipalities: Sept. 2007 - April 4, 2008
            2008 Census reviews LUCA input & updates Master Address File (MAF): 4/2008 - 10/2008 {No input}
Census conducts Address Canvassing (ACC): 11/2008 - 5/2007 {No input}
Census reviews ACC input and updated MAF: 4/2008 - 10/2009 {No input}
            2009 Census compares LUCA input with ACC and reports to LUCA Towns: 6/2009 - 10/2009 {No input}
LUCA Towns appeal MAF changes: 9/2008 - 12/2009
U.S. OMB determines MAF appeals: 9/2009 - 1/2010
            2010 Census mails Short Forms to households: March 2010

American Community Survey (ACS) releases 2006 data

Census 2010 will not include a long form.
The socio-economic data previously collected on the long-form every ten years
has been replaced with the annual American Community Survey (ACS).


ACS functions as an ongoing perennial survey of population, housing, economic and income statistics. ACS will provide yearly updated socio-economic data for communities with a population of 65,000 and larger. Communities with populations between 20,000 and 65,000 will obtain updated data every 3 years. The remaining communities, with population less than 20,000, will obtain updated data every 5 years.

On August 28th, ACS released 2006 personal income data for Connecticut's statewide population and the eight towns with populations over 65,000: Bridgeport, Danbury, Hartford, New Britain, New Haven, Norwalk, Stamford, and Waterbury. Read the full Press Release.

Although having updated socio-economic data on a 1-, 3-, and 5-year period is a marked improvement over the decennial "long form", there are considerable drawbacks to ACS data.

  1. Chart 1 compares CT Adjusted Gross Income (AGI) from Census 2000 and the ACT against IRS AGI, revealing that Census' decision not to include capital gains allows for consistent under-statement of houshold income
  2. Chart 2 reports the ACS mean household income in CT (in inflation-adjusted 1999 dollars) as significantly higher that its median. Having the median closer to the mean would represent more balance.
  3. Chart 3 tracks the aggregate Household income from 2004 to 2006 for the eight (8) Connecticut towns with population greater than 65,000. The data in Chart 3 is a signal of the margin-of-error within ACS data.

Posted Tuesday, August 28, 2007.


LUCA 2007 Technical Workshops in Connecticut

     To help communities support and participate in the U.S. Census Local Update of Census Addresses (LUCA), the Boston Regional office is sponsoring Technical Training workshops in Connecticut to describe how Census will process input on the Census “Master Address File” (MAF).

     It is hard to over-emphasize the importance of participating in the initial stages of the 2010 Census, to work to assure as accurate and authoritative population counts as possible, that are the foundation for significant federal-to-state funding that flows into Connecticut.

     Communities will start to receive their “offer letters” by mid-August 2007 from the Census Bureau. We encourage each community to find a person or team to take responsibility to provide feedback to Census and partner in developing the most accurate Master Address File (MAF), the primary basis of the surveys mailed to every household in March 2010.

     Technical Training programs are being offered in advance of the community letters, to help town officers and managers understand the requirements, when they consider who will take responsibility within their town government for the LUCA process. The LUCA program will be offered in either paper lists or electronic files, based on the Census Bureau’s current Address List.

All citizens are welcome to attend these sessions.

If you have any questions regarding the content or venue, please contact
  • Vincent Pito, Geographer
  • US Census Bureau
  • PO Box 9180, Boston, MA 02117
  • 617 424-4597
  • vpito@census.gov

Connecticut Gains Firms, Not Jobs

     Our analysis of the just-released   2005 County Business Patterns in Connecticut from the U.S. Census show Connecticut gained more than 1,950 businesses compared with the recent low in 2003, to reach a record high of 93,561. However, these 1,950 new businesses employed 26,000 fewer workers than during peak employment in 2002.

Furthermore, the total number of employees in 2005, at 1,529,827, is at the same level as in 1999, at 1,530,539. Consequently, while Connecticut has reached a new high in the number of business establishments, there is not a concomitant growth in the employed workforce.

Read the complete text of the Press Release. Posted Thurs, June 7, 2007.

Population Projections Released

     Connecticut  Population Projections were published on May 16, 2007 (Read the Press Release), after a hiatus of at least a decade.

Using these Projections


     Various components of the projections, such as counts for individual towns, might not sum to counts for larger areas such as counties or the state. Statistical methods were used to optimize extrapolations for each separate geographic level. Posted Tues, May 15, 2007 @ 6pm ET

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