Statistics for occurrence #1 of “Connecticut” in chapter 144 of C. Edwards Lester, Life and public services of Charles Sumner: Born Jan. 6, 1811. Died March 11, 1874.:
...chusetts, in an adult native white population of 470,375, was 1,055, or 1 in 446; the number in Slave South Carolina, in a like population of only 120,136, was 15,580, or 1 in 8.
The number in Free Connecticut was 1 in 256, in Slave Virginia 1 in 5; in Free New Hampshire 1 in 192, and in Slave North Carolina 1 in 3.
...