Explanation of the numbers.
The 1830 and 1840 census contained 12 colums of age information for males and 12 columns for females. These were for Free white persons, including heads of families. In addition, there were columns for Employment, Pensioners, Impairment, and Schools. I have only included the information from the age categories, which were:

• To 5
• 5-10
• 10-15
• 15-20
• 20-30
• 30-40
• 40-50
• 50-60
• 60-70
• 70-80
• 80-90
• 90-100
  

This information was repeated for both males and females. An example of how to read the census information presented here would be:

Page	Head of Family	Males	Females
14	JOE HOLLOWELL	00211001	2110001

This is translated to read:
Joe Jones found on page 14 of the particular county census with 2 males age 10-15, 1 male 15-20, 1 male 20-30, and 1 male 50-60. Also, 2 females to 5, 1 female 5-10, 1 female 10-15, and 1 female 40-50.

ISLE OF WIGHT CO.

Page	Head of Family	Males	Females
19	MARIAH HOLLOWELL		Free Black
19	CHARLOTTE HOLLOWELL		Free Black
20	DICK HOLLOWELL		Free Black
20	EPER HOLLOWELL		Free Black
20	HAGOR HOLLOWELL		Free Black
20	MOURNING HOLLOWELL		Free Black
21	LUCY HOLLOWELL		Free Black

NORFOLK CO.

Page	Head of Family	Males	Females
312	JOHN HOLLOWELL	0001100001	0111001
315	MARY HOLLOWELL		00011001
	St Brides Parish
375	FREDERICK HOLLOWELL	10220101	200301

RICHMOND CO.

Page	Head of Family	Males	Females
	Jefferson Twp.
441	JOSHUA HALLOWELL