For each one of their citizens, fifteen altogether, who held upwards of one hundred slaves, there were approximately three who had from 50 to 99; seven with from 30 to 49; thirteen with from 20 to 29; forty with from 10 to 19; forty with from 5 to 9; seventy with from 1 to 4; and sixty who had none.

In the three chief plantation counties of Maryland, viz.

Ann Arundel, Charles, and Prince George, the ratios among the slaveholdings of the several scales, according to the United States census of 1790, were almost identical with those just noted in the selected Virginia counties, but the non-slaveholders were nearly twice as numerous in proportion.

In all these Virginia and Maryland counties the average holding ranged between 8.5 and 13 slaves.

In the other districts in both commonwealths, where the plantation system was not so dominant, the average slaveholding was smaller, of course, and the non-slaveholders more abounding.
[Footnote 23: Printed in lieu of the missing returns of the first U.S.
census, in _Heads of Families at the First Census of the United States: Virginia_ (Washington, 1908).] The largest slaveholding in Maryland returned in the census of 1790 was that of Charles Carroll of Carrollton, comprising 316 slaves.