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Where am ILOCATED

Strafford County, New Hampshire

Strafford County, New Hampshire, has 135,043 residents (July 2025 estimate). Its county seat is Dover. It uses Eastern Time and covers 367 sq mi (952 km²) of land.

ManchesterNashuaConcord
Strafford County in New Hampshire
York CountyBelknap CountyDoverRochesterSomersworthDurhamFarmington
Strafford County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
135,043
Land area
367 sq mi (952 km²)
County seat or government
Dover
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$88,570 ± $4,424
Median home value
$362,800 ± $7,889
Median rent, with utilities
$1,488 ± $47
Homes lived in by their owners
67.1% ± 1.3 points
County type
County
Metro or micro area
Boston-Cambridge-Newton, MA-NH metro areaOutlying county
Water area
15.1 sq mi (39.1 km²)
State
New Hampshire
County code (FIPS)
33017
Coordinates (central point)
43.293272, -71.035589
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Strafford County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 0382033,440 people
  2. 0386722,732 people
  3. 0382415,080 people
  4. 0387812,205 people
  5. 038259,489 people
  6. 030427,430 people
  7. 038356,804 people
  8. 038686,133 people
  9. 038614,576 people
  10. 038514,333 people
  11. 038844,306 people
  12. 038394,279 people
All 17
  1. 038552,748 people
  2. 038692,456 people
  3. 038232,203 people
  4. 038871,739 people
  5. 03852205 people

17 ZIP Code areas overlap Strafford County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Towns in Strafford County, largest first

  1. Town of Durham15,080 people
  2. Town of Barrington9,489 people
  3. Town of Farmington6,795 people
  4. Town of Lee4,576 people
  5. Town of Milton4,538 people
  6. Town of Strafford4,306 people
  7. Town of New Durham2,748 people
  8. Town of Rollinsford2,626 people
  9. Town of Madbury2,203 people
  10. Town of Middleton1,595 people

People counts are American Community Survey 2020–2024 5-year estimates. All towns in New Hampshire, by county

School districts in Strafford County, largest first

  1. Dover School District33,364 people
  2. Rochester School District33,144 people
  3. Oyster River Cooperative School District21,859 people
  4. Governor Wentworth Regional School District18,888 people
  5. Somersworth School District12,111 people
  6. Barrington School District9,489 people
  7. Farmington School District6,795 people
  8. Milton School District4,538 people
  9. Strafford School District4,306 people
  10. Rollinsford School District2,626 people
  11. Middleton School District1,595 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Dover, New Hampshire (city)33,364 people
  2. Rochester, New Hampshire (city)33,144 people
  3. Somersworth, New Hampshire (city)12,111 people
  4. Durham, New Hampshire (CDP)10,681 people
  5. Farmington, New Hampshire (CDP)3,924 people
  6. Milton, New Hampshire (CDP)356 people
  7. Milton Mills, New Hampshire (CDP)72 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. York County, Maine21 mi northeast
  2. Rockingham County, New Hampshire21 mi south
  3. Belknap County, New Hampshire25 mi northwest
  4. Merrimack County, New Hampshire32 mi west
  5. Carroll County, New Hampshire41 mi north

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.