Wasn’t sure if this was just a population thing, so:

State | population | Undocumented est |  % undocumented
TX    |     31M    |     2.0 M        |   6.4%
FL    |     23M    |     1.2 M        |   5.2%
IL    |     13M    |     0.59 M       |   4.5%
MN    |     5.8M   |      100 k       |   1.7%
CA    |     39M    |     2.9 M        |   7.4%