This map shows household size in San Mateo County by neighborhood or county. San Mateo County has an average of 2.93 individuals per household. Red areas have larger household sizes, which generally means more children. Green areas have smaller household sizes, and there will typically be fewer young children.
The median age of residents in San Mateo County is 41.72. This is older than the median age of 38.1 in the United States.
The areas in green are among the youngest areas in the county. Areas in red show San Mateo County neighborhoods where the median resident is older, and areas in yellow show areas where the median age is between the late 30s and early 40s.
This map shows where single-parent households live. In San Mateo County, 7.87% of households have a single parent. Neighborhoods with very few one-parent households are green, and areas with many single-parent households are red.
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Updated 2023 using the most recent data available (2021)