Merrimack County, NH Population Statistics: Density Map Data
Analyze local population trends, population density map, housing costs, and the local economy.
Area Snapshot Statistics
Key statistics on population, economy, housing, and commuting compared to state and national averages. Explore interactive maps for deeper analysis.
Population: density and quick facts
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Population | 155,300 | 1,388,685 | 334,821,731 |
| Population density (per sq mi) | 162.6 | 148.5 | 85.8 |
| Population growth (%/yr) | 0.67% | 0.63% | 0.57% |
| Median age | 40.3 | 41.3 | 37.1 |
| Households | 60,356 | 550,765 | 128,459,983 |
Population in Merrimack County grew by 4.4% from 2009 to 2023, reaching 155,018 in 2023.
Population Growth 2009–2023
Race & Ethnicity
Economy
Merrimack County has a the economy index of B, which means it is quite prosperous.
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median household income | $93,959 | $96,071 | $78,145 |
| Income growth (%/yr) | 4.86% | 4.91% | 5.07% |
| Unemployment rate | 3.1% | 3.4% | 5.2% |
The median household income in Merrimack County is about 2% lower than in New Hampshire.
Housing
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median home price | $313,262 | $273,705 | $242,182 |
| Median rent | $1,293 | $1,422 | $1,342 |
| Homeownership rate | 73.5% | 72.5% | 65.1% |
The median home price in Merrimack County is about 20.2 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,293 per month for that long.
Commute Time & Mobility
Commuters in Merrimack County spend about 46 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 191 hours, about 7.9 full days, spent commuting.
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 22.9 | 22.5 | 22.5 |
| Round-trip commute (min) | 45.7 | 45.0 | 44.9 |
| Yearly time spent (hours) | 191 | 187 | 187 |
| Estimated yearly cost | $5,906 | $5,807 | $5,803 |
| Work from home | 13.1% | 15.1% | 13.4% |
| Highway traffic (vehicles/day) | 8,258 | 8,168 | 8,813 |
| Local road traffic (vehicles/day) | 1,305 | 1,232 | 1,355 |
Fastest commutes among counties in
New Hampshire:
Coos County (17.4 min), Grafton County (18.0 min), Cheshire County (18.8 min).
Slowest:
Rockingham County (25.5 min), Sullivan County (23.0 min), Merrimack County (22.9 min).
The average commute time in Merrimack County is 23 minutes, longer than the 22 minutes in New Hampshire.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Merrimack County has a education index of B, which means it is quite educated.
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 33.9% | 36.2% | 31.6% |
| Average household size | 2.46 | 2.44 | 2.54 |
Highest education index among counties in
New Hampshire:
Rockingham County (0.4), Grafton County (0.4), Hillsborough County (0.3).
Lowest:
Coos County (0.2), Sullivan County (0.3), Cheshire County (0.3).
Health
Merrimack County has a health index of A, which means it is very healthy.
| Metric | Merrimack County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.5 | 80.2 | 78.3 |
| Self-rated poor health | 11.4% | 12.6% | 16.3% |
| Smokers | 15.4% | 16.0% | 19.0% |
Highest health index among counties in
New Hampshire:
Rockingham County (0.8), Merrimack County (0.8), Grafton County (0.8).
Lowest:
Coos County (0.8), Sullivan County (0.8), Belknap County (0.8).
Frequently Asked Questions
Common questions about Merrimack County, New Hampshire.
What is the population of Merrimack County, New Hampshire?
The population of Merrimack County, New Hampshire is 155,300, compared to the U.S. total of 334,821,731.
What is the population density of Merrimack County, New Hampshire?
The population density of Merrimack County, New Hampshire is 162.6 people per square mile, compared to the U.S. average of 85.8 people per square mile.
What is the median household income in Merrimack County, New Hampshire?
The median household income in Merrimack County, New Hampshire is $93,959, compared to the U.S. median of $78,145.
What is the median home price in Merrimack County, New Hampshire?
The median home price in Merrimack County, New Hampshire is $313,262, compared to the U.S. median of $242,182.
What is the unemployment rate in Merrimack County, New Hampshire?
The unemployment rate in Merrimack County, New Hampshire is 3.1%, compared to the U.S. average of 5.2%.