New Jersey the most built-up state in the Union.  I notice this
shelter is in Warren, NJ - I went to high school there.  Which is kind
of unfortunate, as you grow up thinking that everyone's father is
either a CEO or has an earldom, and that the best place to hang out
after school is a country club.  I'm glad I moved away. :)

In terms of square mileage NJ is a smaller State (8,722 square miles),
but in terms of people it ranks towards the top of the list. Making
for a lot more people per square mile.

Latest stats I found were US Census Bureau as of 2006:

Population: 8,724,560, making it number 11out of the 50 states +
Puerto Rico.

http://factfinder.census.gov/servlet/GCTTable?_bm=y&-geo_id=01000US&-ds_name=PEP
_2006_EST&-_lang=en&-redoLog=false&-format=US-9|US-9S&-mt_name=PEP_2006_EST_GCTT
1R_US9S&-CONTEXT=gct

or tinyUrl:
http://tinyurl.com/22whs9

-- Bev A.