Merrimack County GIS Maps
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Merrimack County, New Hampshire, has 153,808 residents across 63,850 parcels and covers 932.9 square miles. The population grew 5% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Merrimack County is 33013.
Concord is the county's largest population center. Merrimack County also includes 28 zip codes, 11 public school districts and 50 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Merrimack County Trends
- Population
- 153,808▴
- Median Home Value
- $330,600▴
- K-12 Enrollment
- 16,433▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Merrimack County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Merrimack County Parcels
Merrimack County has 63,850 mapped parcels covering 554,533 acres. Site addresses are on nearly every parcel. Browse the interactive Merrimack County Parcel viewer here.
Merrimack County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 63,850 | 100% |
| Owner name | 0 | 0% |
| Owner mailing address | 0 | 0% |
| Site address | 62,730 | 98.2% |
| Land use code | 62,732 | 98.2% |
| Land use description | 0 | 0% |
| Assessed value | 0 | 0% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 0 | 0% |
| Parcel boundary | 63,850 | 100% |
| Download all Merrimack County parcels. | ||
Field coverage measured across all Merrimack County parcel records.
Merrimack County Population
Merrimack County had 153,808 residents in 2020. That was 5% higher than in 2010. Merrimack County added 17,583 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 165 people per square mile. Some of the county's most populated postal areas include Concord, Concord and Hooksett.
Population Trend in Merrimack County NH
Merrimack County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Merrimack County Zip Codes
Merrimack County has 28 zip codes. Some of the county's most populated zip codes include Concord (03301), Concord (03303) and Hooksett (03106). Concord is the largest zip by population, with about 33,352 residents or 22% of the county total. Together, the three largest zips account for about 42% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Merrimack County NH
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 03301 | Concord | 33,352 | ▴ 1% |
| 03303 | Concord | 16,516 | ▴ 6.4% |
| 03106 | Hooksett | 14,799 | ▴ 10.7% |
| 03275 | Pembroke | 11,946 | ▴ 4.5% |
| 03235 | Franklin | 8,856 | ▴ 3.4% |
| Download all zip code data | |||
Merrimack County Zip Code populations and trends per most recent census data.
Merrimack County Demographics
Merrimack County has a median age of 42.6, which makes the county a little younger than New Hampshire overall. About 18.6% of residents are under 18, while 19.3% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 31.1% of the population, which points to a solid working-age base. About 38.1% of adults have a bachelor's degree or higher, above the statewide figure of 39.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Merrimack County NH
Median Age
42.6
Under 18
18.6%
Age 65+
19.3%
Bachelor's+
38.1%
Merrimack County School Districts
Merrimack County is served by 11 public school districts with 16,433 students enrolled in 2024. The largest districts on the county map are Concord, Merrimack Valley and Bow. Those three districts account for about 47% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Merrimack County NH
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Concord School District | 3,835 | 23.3% | ▾ -2.5% |
| Merrimack Valley School District | 2,170 | 13.2% | ▾ -2% |
| Bow School District | 1,688 | 10.3% | ▴ 1.1% |
| Kearsarge Regional School District | 1,672 | 10.2% | ▴ 0.1% |
| Pembroke School District | 1,345 | 8.2% | ▾ -4.5% |
| Download all school district data | |||
Merrimack County school district enrollment and trends per most recent NCES reporting data.
Merrimack County Housing & Real Estate
Merrimack County has a median home value of $330,600 and a median gross rent of $1,293. About 73% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the New Hampshire median, while rents come in below the state average. In March 2026, the median listing price was $537,450 and homes spent about 42 days on the market.
Merrimack County Housing Mix
Merrimack County housing mix: owner, renter and vacant units.
Merrimack County Housing Trends
Merrimack County median home value and rent trend (last 5 years).
Businesses in Merrimack County, NH
Merrimack County has 7,562 business listings across 805 categories. The largest categories in Merrimack County business listings are Auto Repair (158, 2.1%), Community & Nonprofits (146, 1.9%), and Farm (130, 1.7%). The full Merrimack County business listings dataset includes names, categories, addresses and contact details where available. Merrimack County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Merrimack County, NH
| Category | Businesses | Share |
|---|---|---|
| Auto Repair | 158 | 2.1% |
| Community & Nonprofits | 146 | 1.9% |
| Farm | 130 | 1.7% |
| Churches & Religious Organizations | 129 | 1.7% |
| Real Estate Agents | 129 | 1.7% |
| Contractors | 122 | 1.6% |
| Convenience Stores | 92 | 1.2% |
| Hair Salons | 90 | 1.2% |
| Parks & Recreation | 90 | 1.2% |
| Public And Government Association | 84 | 1.1% |
Merrimack County Business Listings
| Business | Category | City |
|---|---|---|
| Teddy's Tees Inc. | 3D Printing Service | Concord |
| New Season | Abuse And Addiction Treatment | Franklin |
| NHTI-Concord's Community College Bookstore | Academic Bookstore | Concord |
| Morningstar Condos | Accommodation | Concord |
| Ernest L Tomkiewicz | Accountant | Concord |
| R.E. Perry Acoustics llc | Acoustical Consultant | Dunbarton |
| U.S. Army Corps of Engineers, Franklin Falls Dam | Active Life | Franklin |
| Trend Acupuncture | Acupuncture | Concord |
| Canterbury Behavioral Health - Inpatient Mental Health Treatment | Addiction Rehabilitation Center | Canterbury |
| Thorne's | Adult Entertainment | Concord |
| Download Merrimack County business listings | ||
Merrimack County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Merrimack County Basemaps
Merrimack County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Merrimack County Data Package
This page shows a preview of what's included in the Merrimack County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Merrimack County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.