Strafford County GIS Maps
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Strafford County, New Hampshire, has 130,889 residents across 45,890 parcels and covers 367.6 square miles. The population grew 6.3% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Strafford County is 33017.
Dover is the county's largest population center. Strafford County also includes 16 zip codes, 8 public school districts and 29 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.
Strafford County Trends
- Population
- 130,889▴
- Median Home Value
- $332,400▴
- K-12 Enrollment
- 14,154▾
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.
Strafford 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.
Strafford County Parcels
Strafford County has 45,890 mapped parcels covering 226,712 acres. Site addresses reach 97.8%. Browse the interactive Strafford County Parcel viewer here.
Strafford County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 45,891 | 100% |
| Owner name | 0 | 0% |
| Owner mailing address | 0 | 0% |
| Site address | 44,867 | 97.8% |
| Land use code | 44,867 | 97.8% |
| Land use description | 0 | 0% |
| Assessed value | 0 | 0% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 0 | 0% |
| Parcel boundary | 45,890 | 99.9% |
| Download all Strafford County parcels. | ||
Field coverage measured across all Strafford County parcel records.
Strafford County Population
Strafford County had 130,889 residents in 2020. That was 6.3% higher than in 2010. Strafford County added 18,656 people between 2000 and 2020, which points to steady long-term growth. Dover is the largest city in the county, but it accounts for only about 25% of the total population. The county is fairly spread out, with about 356 people per square mile. Some of the county's most populated postal areas include Dover, Rochester and Durham.
Population Trend in Strafford County NH
Strafford County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Strafford County Zip Codes
Strafford County has 16 zip codes. Some of the county's most populated zip codes include Dover (03820), Rochester (03867) and Durham (03824). Dover is the largest zip by population, with about 32,800 residents or 25% of the county total. Together, the three largest zips account for about 54% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Strafford County NH
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 03820 | Dover | 32,800 | ▴ 9.2% |
| 03867 | Rochester | 22,369 | ▴ 7.8% |
| 03824 | Durham | 15,498 | ▴ 5.9% |
| 03878 | Somersworth | 11,919 | ▴ 0.8% |
| 03825 | Barrington | 9,326 | ▴ 9.6% |
| Download all zip code data | |||
Strafford County Zip Code populations and trends per most recent census data.
Strafford County Demographics
Strafford County has a median age of 37.9, which makes the county a little younger than New Hampshire overall. About 17.9% of residents are under 18, while 16.5% 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 30.9% of the population, which points to a solid working-age base. About 38.5% 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 Strafford County NH
Median Age
37.9
Under 18
17.9%
Age 65+
16.5%
Bachelor's+
38.5%
Strafford County School Districts
Strafford County is served by 8 public school districts with 14,154 students enrolled in 2024. The largest districts on the county map are Rochester, Dover and Oyster River Cooperative. Those three districts account for about 66% 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 Strafford County NH
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Rochester School District | 3,778 | 26.7% | ▾ -0.8% |
| Dover School District | 3,498 | 24.7% | ▾ -3.1% |
| Oyster River Cooperative School District | 2,097 | 14.8% | ▾ -0.7% |
| Governor Wentworth Regional School District | 2,077 | 14.7% | ▾ -1.8% |
| Somersworth School District | 1,311 | 9.3% | ▾ -1.8% |
| Download all school district data | |||
Strafford County school district enrollment and trends per most recent NCES reporting data.
Strafford County Housing & Real Estate
Strafford County has a median home value of $332,400 and a median gross rent of $1,413. About 67% 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 $584,950 and homes spent about 45 days on the market.
Strafford County Housing Mix
Strafford County housing mix: owner, renter and vacant units.
Strafford County Housing Trends
Strafford County median home value and rent trend (last 5 years).
Businesses in Strafford County, NH
Strafford County has 5,365 business listings across 709 categories. The largest categories in Strafford County business listings are Auto Repair (94, 1.8%), Churches & Religious Organizations (79, 1.5%), and Contractors (77, 1.4%). The full Strafford County business listings dataset includes names, categories, addresses and contact details where available. Strafford County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Strafford County, NH
| Category | Businesses | Share |
|---|---|---|
| Auto Repair | 94 | 1.8% |
| Churches & Religious Organizations | 79 | 1.5% |
| Contractors | 77 | 1.4% |
| College University | 75 | 1.4% |
| Farm | 75 | 1.4% |
| Community & Nonprofits | 72 | 1.3% |
| Convenience Stores | 71 | 1.3% |
| Professional Services | 63 | 1.2% |
| Beauty Salons | 62 | 1.2% |
| Landmark And Historical Building | 61 | 1.1% |
Strafford County Business Listings
| Business | Category | City |
|---|---|---|
| Groups Recover Together | Abuse And Addiction Treatment | Rochester |
| University of New Hampshire Bookstore | Academic Bookstore | Durham |
| University Downtown | Accommodation | Durham |
| Dumais, Ferland & Fuller CPAs | Accountant | Somersworth |
| Water Monkey Camp | Active Life | New Durham |
| Upright Acupuncture & Wellness LLC | Acupuncture | Dover |
| WolfPack Creative Group | Advertising Agency | Strafford |
| Paradis Performance Horses | Agriculture | Dover |
| Skyhaven Airport | Airport | Rochester |
| Dr. Ashok A Shah | Allergist | Rochester |
| Download Strafford County business listings | ||
Strafford County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Strafford County Basemaps
Strafford 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 Strafford County Data Package
This page shows a preview of what's included in the Strafford 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 Strafford County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.