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

County	Total Free Persons	All Other Free Persons	Slaves
ALLEGANY	6,289	113	620
ANNE ARUNDEL	14,975	2,536	11,693
BALTIMORE	22,558	1,537	6,697
BALTIMORE CITY	41,883	5,671	4,672
CALVERT	4,068	388	3,937
CAROLINE	7,933	1,001	1,520
CECIL	10,599	947	2,467
CHARLES	7,810	412	12,435
DORCHESTER	13,076	2,661	5,032
FREDERICK	28,766	783	5,671
HARFORD	16,827	2,221	4,431
KENT	7,201	1,979	4,249
MONTGOMERY	10,408	677	7,572
PRINCE GEORGE'S	11,400	4,929	9,189
QUEEN ANNE'S	10,267	2,738	6,381
SOMERSET	10,220	1,058	6,975
ST MARY'S	6,794	636	6,000
TALBOT	9,279	2,003	4,878
WASHINGTON	16,074	483	2,656
WORCESTER	12,544	1,054	4,427
TOTAL	269,044	33,927	111,502