The special day of activities and fun for people of all ages will be held at Austin Park, 14077 Lakeshore Drive, in Clearlake from 11 a.m. to 2 p.m.
There will be free food, fun, live music, information about the US Census and help completing the forms.
People will be counted regardless of immigration status, age and whether or not they live in transitional housing.
All information shared with US Census workers will be confidential.
Counting everyone in the community is important in order to bring much-needed federal funding for health and education services to the county.
Each person missed on the 2010 Census will cost the community more than $2,900 in programs and services, according to the US Census Bureau.
As of Wednesday, the national mail participation rate for the 2010 Census was at 63 percent, the agency reported. The top five states are Wisconsin, Minnesota, Iowa, Nebraska and Michigan.
California's return rate was 61 percent on Wednesday, according to the mail participate rate tracker located at http://2010.census.gov.
Lake County's rate thus far is 52 percent, which puts it behind neighboring counties. The county's overall participation rate in 2000 was 54 percent.
Within the county, Lakeport has a 63-percent return rate, while Clearlake is at 51 percent, the US Census reported.
Until the middle of April, the US Census will accept forms by mail. Afterward, US Census workers will visit homes in order to count people who have not returned the forms by mail.
For help completing the 2010 Census form, contact the US Census Bureau seven days a week from 8 a.m. to 9 p.m. at 866-872-6868 (English) or 866-928-2010 (Spanish).
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