About San Mateo
San Mateo is a city located in United States, in the California region. According to the latest available data (2026), the population of San Mateo is approximately 105,661 residents, making it the #819 most populous city in United States.
Globally, San Mateo ranks #14,961 among the world's most populated cities.
San Mateo City Statistics
| City | San Mateo |
| Country |  United States |
| Population | 105,661 |
| Global Rank | #14,961 |
| Rank in United States | #819 of 867 cities |
| City Category | city |
| Region | California |
| Latitude | 37.5542 |
| Longitude | -122.3131 |
| Data Year | 2026 |
Where is San Mateo Located?
San Mateo is located in United States, in the California region, at coordinates 37.5542° latitude and -122.3131° longitude. San Mateo sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of San Mateo?
The population of San Mateo is approximately 105,661 residents according to the latest available data (2026).
Where is San Mateo located?
San Mateo is located in United States at approximately 37.5542° latitude and -122.3131° longitude.
Is San Mateo one of the largest cities in United States?
With a population of 105,661, San Mateo is one of the notable urban areas in United States. It ranks #819 out of 867 cities in the country.
