100 and under 200 slaves 1

The following table gives the population of Loudoun County
decennially, from and including the first official census of 1790:

1900 21,948
1890 23,274
1880 23,634
1870 20,929
1860 21,774
1850 22,079
1840 20,431
1830 21,939
1820 22,702
1810 21,338
1800 20,523
1790 18,952

The reports of population by magisterial districts given below, with a
single exception, show an appreciable decrease between the years 1890
and 1900:

----------------------+-------+-------
| 1900. | 1890.
----------------------+-------+-------
Broad Run district | 3,309 | 3,463
Jefferson district | 3,106 | 3,307
Leesburg district | 4,299 | 4,246
Lovettsville district | 3,104 | 3,210
Mercer district | 4,010 | 4,570