About Marin County
Marin County is a city located in United States, in the California region. According to the latest available data (2026), the population of Marin County is approximately 262,321 residents, making it the #300 most populous city in United States.
Globally, Marin County ranks #7,032 among the world's most populated cities.
Marin County City Statistics
| City | Marin County |
| Country |  United States |
| Population | 262,321 |
| Global Rank | #7,032 |
| Rank in United States | #300 of 867 cities |
| City Category | city |
| Region | California |
| Latitude | 38.04 |
| Longitude | -122.74 |
| Data Year | 2026 |
Where is Marin County Located?
Marin County is located in United States, in the California region, at coordinates 38.04° latitude and -122.74° longitude. Marin County 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 Marin County?
The population of Marin County is approximately 262,321 residents according to the latest available data (2026).
Where is Marin County located?
Marin County is located in United States at approximately 38.04° latitude and -122.74° longitude.
Is Marin County one of the largest cities in United States?
With a population of 262,321, Marin County is one of the notable urban areas in United States. It ranks #300 out of 867 cities in the country.
