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.

BARTHOLOMEW CO.

Page	Head of Family	Males	Females
191	WILLIAM HOLLOWELL	11001	1101

DEARBORN CO.

Page	Head of Family	Males	Females
	Logan Twp.
186	SAMUEL HOLOWEL	001201	011101
186	WILLIAM HOLOWELL	0110001	210001

FRANKLIN CO.

Page	Head of Family	Males	Females
286	THOMAS HOLOWELL	12012001	0021001001
286	WILLIAM HOLLOWELL	20001	00001
287	JOHN HOLOWELL	10001	000001

ORANGE CO.

Page	Head of Family	Males	Females
21	JOHN HOLLOWELL	000001	0001
25	NATHAN HOLLOWELL	220001	010001
34	ELIZABETH HOLLOWELL	00101	00010001
41	HENRY HOLLOWELL	1121001	1101001
41	JOHN HOLLOWELL, JUN.	20001	00001
41	JOHN HOLLOWELL, SEN.	001000001	0010000001
41	JONATHAN HOLLOWELL	220001	112001
42	JOSE HOLLOWELL	00101	20001
43	MARY HOLLOWELL	1	02002
47	ROBERT HOLLOWELL	000011001	1011001

WASHINGTON CO.

Page	Head of Family	Males	Females
328	THOMAS HOLLEWEL	221001	11001
338	NATHAN HOLOWEL	00001	1001