In other cases, census workers have made arrangements to hand-deliver forms.
The census workers just keep coming to my house, and I'm never home.
Before 1970, census workers took down all the information in person by going door to door.
Government jobs declined for the third month as census workers were laid off.
For May, the increase in jobs, which includes temporary census workers, is now put at 356,000 instead of the 164,000 reported five weeks ago.
In May, 200,000 census workers were hired, the department reported today, up from the initial estimate of 145,000.
The census workers who have roots in a foreign culture say they understand how best to approach immigrants.
As a preliminary to the dispatch of forms, census workers will check any address problems on the ground.
But that is the task facing the millions of census workers as they fan out across China.
They said the ability to pass on information to census workers was also limited because they are out in the field.