This is some excellent information that I thought should be passed on. I got
it as a message from another list but it something that I wondered about
when I was unable to find a child born in a census year.
Congress specifies a "census day" and the time allowed to take the census.
The census taker was to count the people who lived in each house as of the
"census day." which may include anyone who died after census day, or exclude
any child born after the census day. Analysis is imperative here. (i.e. the
census days for 1820 and 1830 are not exactly 10 years apart. There is a 2
month difference.
So, if a person was born between June 1, 1820 and August 7, 1820 the child
would appear in 1820 as "under 5" and in 1830 as "under 10" rather than "of 10
and under 16," because he would not yet be 10.
CENSUS YEAR CENSUS DAY TIME ALLOWED
1790 2 Aug 1790 = 9 Months
1800 4 Aug 1800 = 9 Months
1810 6 Aug 1810 = 10 Months
1820 7 Aug 1820 = 13 Months
1830 1 June 1830 = 12 Months
1840 1 June 1840 = 18 Months
1850 1 June 1850 = 5 Months
1860 1 June 1860 = 5 Months
1870 1 June 1870 = 5 Months
1880 1 June 1880 = 1 Month
1890 1 June 1890 = 1 Month
1900 1 June 1900 = 1 Month
1910 15 Apr 1910 = 1 Month
1920 1 Jan 1920 = 1 Month