Page last updated at 12:41 GMT, Thursday, 1 April 2010 13:41 UK
Census Day climax for 2010 US population survey  Truck shows
Portrait of America - part of a road tour informing people about
the US census The results of the census are used to allocate
funds and Congressional seats  The 2010 US census reaches a
climax on Thursday with Census Day, the deadline for all
households in the country to return their census form.  More
than 50% of people have already returned their form, but the
government is looking to boost that number with a series of
rallies across the country.  The census results are used to
allocate federal funds and congressional seats.  Hispanics, who
in the past have shunned the count, have been targeted in
adverts to ensure they respond.  This week, several regions are
being urged to step up their response, including five states
with higher shares of minority or indigenous populations that
ranked at the bottom: Alaska, New Mexico, Louisiana, New York
and Texas.  Some $400bn (£251bn) of federa