Published: Apr 29, 2010 11:57 PM EDT

LEE COUNTY, FL- Starting Saturday people can expect a knock on on their door.
For the next 2 months, 1,500 census workers will be hitting the streets, targeting homes whose residents either didn't fill out a census form or didn't receive one in the mail. There are things to look for.

U.S Census Bureau spokesperson Edwin Frost says, "The census worker will be wearing an ID tag around their neck, it will have their name on the front and their signature on the back."

Workers should be carrying a black bag like this and should have a sign in their vehicles window saying that "they are on official census business."

Lehigh acres resident gayle crnkovic isn't concerned.

 She says, "I don't expect anyone to come to my door, because I filled out my form a few weeks ago and mailed it in."

Officials say some residents who filled out their forms late, will be getting a visit from census workers.
They'll ask how many people are living in a home and questions regarding age, sex and race.

Frost says, "If anybody asks for a social security number, if anybody asks for a bank identification number or account number, that is not a census worker!"

When in doubt, Frost says, ask for ID to make sure you're not putting your personal information in the wrong hands.