The above all looks like decent advice .. One additional thought/approach i had that might save some steps is to "right-align" the data. First, this is assuming the the last non-blank column has the city/state/zip and the second-to-last has the address (street name/number), and thus saves the "if zip_in_6 elsif zip_in_5 elsif zip_in_4 ..." branching). 
my @data = ( [...], [...], ... ); # assume AoA
foreach my $row (@data){
  while(scalar(@$row) && ! $row->[-1]){  # if last item is blank
    pop @$row; #then remove it
  }
  my $city_state_zip_str = $->row[-1];
  my $address_str = $row->[-2];
  # parse those two vars w/regexp's here
}

[download]
(Note you could reverse the @$row array and work with ($row->[0], $row->[1]) instead)

In reply to Re: Data Salad Address Problem by davidrw
in thread Data Salad Address Problem by SamCG

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.