San Mateo County Demographics


  • Total Population781,849
  • Male Population(49.3 %) 385,175
  • Female Population(50.7 %) 396,674
  • Median Age41.00
There are currently 781,849 people living in San Mateo County. Out of the total population number, 385,175 are men and 396,674 are women. The median age for San Mateo County dwellers is 41.00.


  • White Collar359,000
  • Blue Collar54,440
There are currently 359,000 white-collar jobs and 54,440 blue-collar jobs in San Mateo County.


  • Total Households268,393
  • Family Households187,165
  • Non-family Households81,228
  • Households With Children89,485
  • Households Without Children178,908
  • Average People Per Household2.83
There are currently 268,393 households in San Mateo County. Out of this total, 187,165 are family households, 81,228 are non-family households, 89,485 are households with children and 178,908 are households without children. The average number of people per household in San Mateo County is 2.83.

Education(Number of people who have achieved the following levels of education)

  • No High School37,150
  • Some High School128,290
  • Some College136,881
  • Associate Degree43,029
  • Bachelors Degree167,972
  • Graduate Degree118,194
There are 37,150 people living in San Mateo County without a high school degree, 128,290 people with some high school degree and 136,881 people with a college degree. 43,029 people have an associate degree, 167,972 hold a bachelor’s degree, while 118,194 boast a graduate degree.

Marital Status(Number of people who have the following marital status)

  • Never Married205,987
  • Married346,261
  • Separated9,048
  • Widowed32,957
  • Divorced56,508
205,987 of the people living in San Mateo County have never been married, while 346,261 are married and 9,048 are separated. A total of 32,957 people are widowed and 56,508 people are divorced.


  • Average Household Income$166,394
  • Median Household Income$111,374
  • Median Income Under 25$59,213
  • Median Income 25-44$138,944
  • Median Income 45-64$149,972
  • Median Income Over 65$66,002

The average household income for people living in San Mateo County is $166,394, while the median household income is $111,374. The median income in San Mateo County is $59,213 for those under 25, $138,944 for those aged 25 to 44, $149,972 for those aged 45 to 64, and $66,002 for those over the age of 65.


Demographic information is extracted from the Unites States Census Bureau and is deemed reliable, however, COMMERCIALCafé can offer no guarantee of the accuracy or completeness of information modified or aggregated for specific neighborhoods.