About Merrimack County
Merrimack County is a city located in United States, in the New Hampshire region. According to the latest available data (2026), the population of Merrimack County is approximately 153,808 residents, making it the #534 most populous city in United States.
Globally, Merrimack County ranks #11,016 among the world's most populated cities.
Merrimack County City Statistics
| City | Merrimack County |
| Country |  United States |
| Population | 153,808 |
| Global Rank | #11,016 |
| Rank in United States | #534 of 867 cities |
| City Category | city |
| Region | New Hampshire |
| Latitude | 43.3 |
| Longitude | -71.68 |
| Data Year | 2026 |
Where is Merrimack County Located?
Merrimack County is located in United States, in the New Hampshire region, at coordinates 43.3° latitude and -71.68° longitude. Located in the mid-latitudes, Merrimack 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 Merrimack County?
The population of Merrimack County is approximately 153,808 residents according to the latest available data (2026).
Where is Merrimack County located?
Merrimack County is located in United States at approximately 43.3° latitude and -71.68° longitude.
Is Merrimack County one of the largest cities in United States?
With a population of 153,808, Merrimack County is one of the notable urban areas in United States. It ranks #534 out of 867 cities in the country.
