2025 Compare Cities People:
San Mateo, CA vs Fairfax, VA

Change Cities
Highlights
- Fairfax is 0% more densely populated than San Mateo.
- People are 7.1% more likely to be married in Fairfax.
- The Median Age is 0.0 years older in Fairfax.
 San Mateo, CAFairfax, VAUnited States
 Population  Unlock23,980329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock37.738.4
 space3
 Population - 201097,256  Unlock309,327,143
 Population - 2000  Unlock21,498285,036,114
 Population - 199085,486  Unlock251,960,433
 Pop. 2000 to Now  Unlock9.0%15.6%
 Pop. 1990 to Now19.8%  Unlock30.8%
 space4
 Population Density  Unlock3,843.093.4
 Land Area12.2  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 San Mateo, CAFairfax, VAUnited States
 Age 0 to 46.7%  Unlock5.9%
 Age 5 to 9  Unlock5.5%6.1%
 Age 10 to 145.7%  Unlock6.6%
 Age 15 to 17  Unlock3.5%3.9%
 Age 18 to 202.6%  Unlock4.0%
 Age 21 to 24  Unlock6.0%5.2%
 Age 25 to 3417.5%  Unlock13.8%
 Age 35 to 44  Unlock13.8%12.9%
 Age 45 to 5412.7%  Unlock12.6%
 Age 55 to 59  Unlock7.9%6.7%
 Age 60 to 645.7%  Unlock6.3%
 Age 65 to 74  Unlock8.6%9.6%
 Age 75 to 844.8%  Unlock4.5%
 Age 85 and over  Unlock2.0%1.9%
 space1
 Race
 San Mateo, CAFairfax, VAUnited States
 White40.9%  Unlock59.4%
 Black  Unlock5.4%12.2%
 Asian25.2%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander1.7%  Unlock0.2%
 Other  Unlock0.3%0.4%
 Two or More Races5.5%  Unlock3.2%
 Hispanic  Unlock17.7%18.4%
 space2
 Marriage & Family
 San Mateo, CAFairfax, VAUnited States
 Married Population52.6%  Unlock49.8%
     Currently Married  Unlock55.1%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock43.7%50.2%
 Never Married33.0%  Unlock33.8%
 Divorced  Unlock7.3%10.8%
 Widowed5.6%  Unlock5.6%
 space5
 Household Size  Unlock2.582.60
 Households40,233  Unlock124,010,992
 Family Households  Unlock5,84980,755,759
     Married couple, w/children35.1%  Unlock30.5%
     Married couple, no children  Unlock42.7%42.9%
 Non Family Households14,813  Unlock43,255,233
     Single householder, w/children  Unlock6.1%15.8%
     Single householder, no children11.3%  Unlock10.8%
Reviews for San Mateo    12 Reviews

I have lived in San Mateo since 2013. It has seen tremendous growth, lots of new restaurants which have become progressively more high-end though there is ample  More

   |    Reply

I'm a native of California. I have lived in the southern part of the state and the northern part of the state for most of my life. I have spent the last 29 years in  More

   |    Reply

Over 15 years ago

San Mateo has a diverse mix of people, a pleasant climate, a very pleasant downtown park with lots going on, and pretty much whatever you need handy. It's not far to  More

   |    Reply

Start Your Review of San Mateo

Reviews for Fairfax    28 Reviews

I lived in the area for 17 years through high school until I eventually became a truck driver. Having now seen most states extensively, I wanted to fairly review what  More

   |    Reply

Living in Fairfax, or any of the Northern Virginia suburbs of DC, means dealing with highways that are a Gordian knot of converging lanes and overpasses, making long  More

   |    Reply

Over 10 years ago

The Cost of living here is high. Though the standard of living is also high, unless you're making over 50,000/year, it's difficult to both live and build any sort of  More

   |    Reply

Start Your Review of Fairfax


Premium Subscription
Includes Cost of Living compares for child care, utilities, transportation, health, taxes, housing for home owners vs renters, weather, insurance premiums and so much more.


The premier source for comprehensive city data for over 30 years.

© Best Places. All rights reserved.