About Placer County
Placer County is a city located in United States, in the California region. According to the latest available data (2026), the population of Placer County is approximately 404,739 residents, making it the #188 most populous city in United States.
Globally, Placer County ranks #4,565 among the world's most populated cities.
Placer County City Statistics
| City | Placer County |
| Country |  United States |
| Population | 404,739 |
| Global Rank | #4,565 |
| Rank in United States | #188 of 867 cities |
| City Category | city |
| Region | California |
| Latitude | 39.06 |
| Longitude | -120.73 |
| Data Year | 2026 |
Where is Placer County Located?
Placer County is located in United States, in the California region, at coordinates 39.06° latitude and -120.73° longitude. Placer 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 Placer County?
The population of Placer County is approximately 404,739 residents according to the latest available data (2026).
Where is Placer County located?
Placer County is located in United States at approximately 39.06° latitude and -120.73° longitude.
Is Placer County one of the largest cities in United States?
With a population of 404,739, Placer County is one of the notable urban areas in United States. It ranks #188 out of 867 cities in the country.
