Census data was accessed from the University of Virginia Historical Census Browser.

County	Total Population	Free Black Males	Free Black Females	Total Free Blacks	Enslaved Males	Enslaved Females	Total Enslaved Blacks
ALLEGANY	15,690	113	102	215	374	438	812
ANNE ARUNDEL	29,532	2,513	2,570	5,083	5,179	4,640	9,819
BALTIMORE CITY	102,313			17,967			4,396
BALTIMORE	32,066			3,486			3,199
CALVERT	9,229	722	752	1,474	2,104	2,066	4,170
CAROLINE	7,806	861	859	1,720	397	355	752
CARROLL	17,241	450	448	898	596	526	1,122
CECIL	17,232	1,318	1,233	2,551	708	644	1,352
CHARLES	16,023	401	418	819	4,615	4,567	9,182
DORCHESTER	18,843	1,925	2,062	3,987	2,216	2,011	4,227
FREDERICK	36,405	1,443	1,542	2,985	2,361	2,084	4,445
HARFORD	17,120	1,257	1,179	2,436	1,354	1,289	2,643
KENT	10,842	1,275	1,216	2,491	1,517	1,218	2,735
MONTGOMERY	14,669	646	667	1,313	2,690	2,445	5,135
PRINCE GEORGE'S	19,539	585	495	1,080	5,414	5,222	10,636
QUEEN ANNE'S	12,633	1,308	1,233	2,541	2,088	1,872	3,960
SOMERSET	19,508	1,240	1,406	2,646	2,863	2,514	5,377
ST MARY'S	13,224	699	694	1,393	2,926	2,835	5,761
TALBOT	12,090	1,170	1,170	2,340	1,907	1,780	3,687
WASHINGTON	28,850	772	808	1,580	1,288	1,258	2,546
WORCESTER	18,377	1,526	1,547	3,073	1,889	1,650	3,539
TOTAL	469,232	29,187	32,891	62,078	45,959	43,536	89,495