San Lorenzo is a census-designated place (CDP) in Alameda County, California, United States. The population was 21,898 at the 2000 census.

Geography

According to the United States Census Bureau, the CDP has a total area of 2.8 square miles (7.2 km²), of which, 2.8 square miles (7.2 km²) is land and 0.36% is water.

Demographics
As of the census of 2000, there were 21,898 people, 7,500 households, and 5,677 families residing in the CDP. The population density was 7,893.4 people per square mile (3,052.3/km²). There were 7,609 housing units at an average density of 2,742.7/sq mi (1,060.6/km²)....

San Lorenzo is a census-designated place (CDP) in Alameda County, California, United States. The population was 21,898 at the 2000 census.

Geography

According to the United States Census Bureau, the CDP has a total area of 2.8 square miles (7.2 km²), of which, 2.8 square miles (7.2 km²) is land and 0.36% is water.

Demographics
As of the census of 2000, there were 21,898 people, 7,500 households, and 5,677 families residing in the CDP. The population density was 7,893.4 people per square mile (3,052.3/km²). There were 7,609 housing units at an average density of 2,742.7/sq mi (1,060.6/km²). The racial makeup of the CDP was 63.32% Race (United States Census), 2.81% Race (United States Census) or Race (United States Census), 0.89% Race (United States Census), 15.48% Race (United States Census), 0.48% Race (United States Census), 10.82% from Race (United States Census), and 6.21% from two or more races. 24.65% of the population were Race (United States Census) or Race (United States Census) of any race. The Hispanic population has been growing rapidly in recent years.

There were 7,500 households, out of which 34.7% had children under the age of 18 living with them, 58.1% were Marriage living together, 12.6% had a female householder with no husband present, and 24.3% were non-families. 19.1% of all households were made up of individuals and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.92 and the average family size was 3.34.

In the CDP the population was spread out with 25.2% under the age of 18, 8.0% from 18 to 24, 29.5% from 25 to 44, 21.3% from 45 to 64, and 16.0% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 94.0 males. For every 100 females age 18 and over, there were 91.3 males.