The Census Bureau begins its once-a-decade head count on Monday.

The $300 million campaign intends to encourage United States residents to complete and return the 10-question form.

Some of the questions will include age, race, income and education levels. Residents will receive a notice in early March, but the actual forms won't arrive until mid-March.

Those who do not complete the Census will receive a follow up post card or a visit from a Census taker.

In 2000, about 67 percent of households mailed back their forms, ending a 30 year decline in the response rate. For every percentage point decrease in the response rate, the Census Bureau says it costs an additional $85 million to find and count those people.

A national head count is required by the Constitution and is used by Congress to distribute federal aid on a state and local level.