About Nassau County
Nassau County is a large city located in United States, in the New York region. According to the latest available data (2026), the population of Nassau County is approximately 1,395,774 residents, making it the #33 most populous city in United States.
Globally, Nassau County ranks #1,228 among the world's most populated cities. With over 1 million residents, Nassau County plays an important role as an economic and cultural center in United States.
Nassau County City Statistics
| City | Nassau County |
| Country |  United States |
| Population | 1,395,774 |
| Global Rank | #1,228 |
| Rank in United States | #33 of 867 cities |
| City Category | large city |
| Region | New York |
| Latitude | 40.7472 |
| Longitude | -73.6381 |
| Data Year | 2026 |
Population Comparison
To put Nassau County's population of 1,395,774 into perspective:
- Nassau County has approximately 1.4 million residents.
- This makes it comparable in size to cities like Prague or Munich.
Where is Nassau County Located?
Nassau County is located in United States, in the New York region, at coordinates 40.7472° latitude and -73.6381° longitude. Located in the mid-latitudes, Nassau County experiences distinct four-season weather patterns.
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 Nassau County?
The population of Nassau County is approximately 1,395,774 residents according to the latest available data (2026).
Where is Nassau County located?
Nassau County is located in United States at approximately 40.7472° latitude and -73.6381° longitude.
Is Nassau County one of the largest cities in United States?
With a population of 1,395,774, Nassau County is one of the major urban areas in United States. It ranks #33 out of 867 cities in the country.
