The History and Genealogy of Callaway County, Missouri
http://www.rootsweb.com/~mocallaw/

Slavery - 1820 MO Census

Missouri County State Free Whites Slaves Free Colored % Slaves* % Free Colored*
CAPE GIRARDEAU MO 5,058 865 45 17.1 0.9
COOPER MO 6,307 637 15 10.1 0.2
FRANKLIN MO 2,170 209 0 09.6 0.0
HOWARD MO 11,319 2,089 18 18.5 0.2
JEFFERSON MO 1,620 212 3 13.1 0.2
LINCOLN MO 1,419 242 1 17.1 0.1
MADISON MO 1,672 371 4 22.2 0.2
MONTGOMERY MO 2,547 526 1 20.7 0.0
NEW MADRID MO 2,001 291 4 14.5 0.2
PIKE MO 3,071 676 0 22.0 0.0
ST. CHARLES MO 3,275 682 13 20.8 0.4
ST. LOUIS MO 8,014 1,810 196 22.6 2.4
STE. GENEVIEVE MO 3,932 983 47 25.0 1.2
WASHINGTON MO 2,344 425 0 18.1 0.0
WAYNE MO 1,239 204 0 16.5 0.0
Totals MO 55,988 10,222 347 18.2 0.62