1960: The first mail-out census forms
were used in 1960. Census questionnaires were mailed to every
household and residents were asked to complete the forms and hold
them for collection by an enumerator. When the enumerators collected
the initial forms they left a second form with additional questions
at 25% of the households. These forms were to be mailed back and
checked for accuracy. Phone or in-person interviews were conducted
to complete any unanswered questions.
[1]
1970: Census forms were again mailed
out to all households (20% receiving a long form). “In larger
metropolitan areas and some adjacent counties (approximately 60
percent of the United States’ population), households were asked to
complete and return the questionnaire by mail on April 1, 1970
(resulting in an 87 percent mail back response rate).” As in the
1960 mail-back sample, these forms were reviewed for consistency and
completeness. Follow-ups were done when necessary. Census
enumerators picked up the questionnaires from the remaining 40% of
the population. [1]
1980: The mail-out/mail-back process
in 1970 met with such success that the 1980 census was conducted
almost entirely by mail, covering greater than 95% of the population.
[1]
For genealogists, the census provides
invaluable information amid two persistent problems: missing
families (the undercount) and misspelled names. Fortunately, both of
those issues should become less problematic for future family
historians. Misspellings don't matter for federal apportionment of
funds, but luckily, with the advent of self-enumeration forms this
problem will disappear on its own. The government does, however,
care about the problem of the undercount and worked hard to address
it in advance of the 1970 census. I haven't found statistics for how
many households were thought to be undercounted and hence missing
from the census. That makes it difficult to say how effective their
measures were.
So what was curb stoning? Since the
inception of the census “ a small percentage of enumerators
completed questionnaires. . . for an individual or multiple
households from the curb, without actually conducting an interview or
checking the accuracy of their 'guesses.' This practice was
motivated, in part, by the requirement to meet quotas or payment for
work done on a 'piece-of-work' basis.”
[1] Tighter controls on
the enumeration process helped deal with the problem of “curb
stoning” during the transition to the current census-by-mail
system. Could this be why I haven't succeeded in locating a few of
my people in the census? It's possible, but statistically unlikely.
I guess I'll just keep hunting.
Fun fact: Michigan ranked 7th
in population in 1940 with about 5.2 million inhabitants. For those of you who want to know, the top six were:
New York, Pennsylvania, Illinois, Ohio, California and Texas.
As of April 27th, the
indexing of Michigan at Family Search was 7% complete (last night I
did a batch from Cass County). If we all do a little indexing we can
knock out the 149,720 images for Michigan in . . . well. . . every
little bit helps.
1. http://www.census.gov/prod/www/abs/decennial/.
1. http://www.census.gov/prod/www/abs/decennial/.
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