Households
Households
topographic
Households

San Mateo County

269,417
Total Households in 2020
In 2020, two-person households were the most common size in San Mateo County, followed by one-person households. Married-couple households made up the largest share of household types. Additionally, 57% of households were owner-occupied.

Most Populous Demographics

CategoryDemographicTotalPercentage
CompositionMarried couple143,59653%
TenureOwner152,26357%
Size2 persons82,81131%

Composition

53%
Married couple
Married-couple households were the largest type in San Mateo County for 2020. Non-family households outnumbered single-parent households by a significant amount. The vast majority of single-parent households were led by women, and more women than men lived alone.

Households by Type

040k80k120k160kMarried coupleSingle parentNon-family53%16%30%
040k80k120k160k53%16%30%Married coupleSingle parentNon-family
/View Households by Type dynamic table

Households by Marital Status

53%
Married couple
    143,596
    Married couple
    125,821
    Single
/View Households by Marital Status dynamic table

Householder Type by Sex

08.5k17k25.5k34k33%43%54%67%57%46%
Single parentLiving aloneNot living alone33%43%54%MaleMaleMale67%57%46%FemaleFemaleFemale
/View Householder Type by Sex dynamic table

Table: Households by Type

TypeHouseholds in San Mateo County
TotalPercentage
Married couple143,59653%
Single parent43,99916%
Non-family81,82230%

Table: Households by Marital Status

Marital StatusHouseholds in San Mateo County
TotalPercentage
Married couple143,59653%
Single125,82147%

Table: Householder Type by Sex

Type by SexHouseholds in San Mateo County
TotalPercentage
Single parent - male14,48412%
Single parent - female29,51523%
Living alone - male25,63320%
Living alone - female33,84127%
Not living alone - male12,11810%
Not living alone - female10,2308%
* For all three charts above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), H14 Tenure By Household Type by Age of Householder.

Tenure

57%
Owner
Owner-occupied households accounted for 57% of San Mateo County’s 269,417 households in 2020. The remaining households were renter-occupied.

Households by Tenure

57%
Owner
    152,263
    Owner
    117,154
    Renter
/View Households by Tenure dynamic table

Table: Households by Tenure

TenureHouseholds in San Mateo County
TotalPercentage
Owner152,26357%
Renter117,15443%
* For the chart above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), H14 Tenure By Household Type by Age of Householder.

Size

31%
2 persons
Two-person households were the most common for San Mateo County in 2020, while one-person households also represented a considerable share of the county. Three-person households were next in the rankings, followed by four-person households.

Households by Size

025k50k75k100k1 person2 persons3 persons4 persons5 persons6 persons7+ persons22%31%17%17%7%3%3%
025k50k75k100k22%31%17%17%7%3%3%1 person2 persons3 persons4 persons5 persons6 persons7+ persons
/View Households by Size dynamic table

Table: Households by Size

SizeHouseholds in San Mateo County
TotalPercentage
1 person59,47422%
2 persons82,81131%
3 persons47,13417%
4 persons44,84817%
5 persons19,3867%
6 persons8,2793%
7+ persons7,4853%
* For the chart above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), H9 Household Size.