Internet providers in Dover, New Hampshire 03820
ZIP code 03820 is in Dover, Strafford County, New Hampshire. Compare the major providers below, then check availability for your address.
Internet in Dover 03820: local snapshot
About 94% of the 15,021 households in 03820 have a broadband subscription, 2 points above the New Hampshire average of 92%. That ranks 03820#83 of 231 ZIP codes in New Hampshire for broadband adoption. Very few households (4%) are offline, suggesting internet service is widely used in this area.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023). These figures describe the area, not the providers available at your address.
Compare internet providers in Dover, New Hampshire
Share of residential locations in Dover where each provider reports service, from the FCC National Broadband Map (data as of December 31, 2025). Availability depends on your exact address.
| # | Provider | Technology (varies by address) | Locations covered | |
|---|---|---|---|---|
| 1 | Xfinity | Cable | 99% | |
| 2 | T-Mobile Home Internet | Fixed wireless | 81% | |
| 3 | Breezeline | Fiber, Cable | 73% | |
| 4 | Fidium Fiber | Fiber, DSL | 73% | |
| 5 | Verizon | Fiber, Fixed wireless | 60% | Check availability |
| 6 | AT&T | Fiber, DSL, Fixed wireless | 59% | Check availability |
Satellite internet
| 1 | HughesNet | Satellite | 99%+ | |
| 2 | Viasat | Satellite | 99%+ | |
| 3 | Starlink | Satellite | 99%+ |
Satellite service is available at nearly every address but typically has higher latency than wired options.
Provider-reported coverage does not guarantee service or speeds at a specific address. Some "Check availability" links are affiliate links; we may earn a commission at no cost to you. How we make money.
What technologies are available in Dover?
Fiber is widely available: about 65% of locations in Dover can get it. Gigabit-class service (1,000 Mbps down) is reported for about 99% of locations. Fixed wireless home internet is reported for about 80% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Dover that providers report they can serve. City-level figures, not your address.
What to know about internet in Dover 03820
Xfinity reports service to the most residential locations in Dover, about 99%. 6 providers report coverage of at least half of locations (Xfinity, T-Mobile Home Internet, Breezeline, Fidium Fiber, Verizon, and AT&T), so the market looks competitive. T-Mobile Home Internet offers fixed wireless home internet, an option if you prefer no cable or fiber installation.
The median age of residents is 37.
Frequently asked questions
Is fiber internet available in Dover?
Yes, in part. About 65% of residential locations in Dover can get fiber, 99% can get cable, and about 99% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Dover?
Xfinity reports service to about 99% of residential locations in Dover, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Dover?
6 providers report service to at least 2% of locations in Dover, and 6 cover at least half. Satellite (HughesNet, Viasat, Starlink) is also available nearly everywhere.
What is the difference between fiber, cable and DSL?
Fiber offers the fastest and most consistent speeds, cable is widely available with high download speeds, and DSL runs over phone lines and is usually slower. See our guide for details.
What internet speed do I need in Dover 03820?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.
Internet providers near Dover
- Durham, NH (4 mi)
- Somersworth, NH (5 mi)
- Rochester, NH (9 mi)
- Portsmouth, NH (10 mi)
- Exeter, NH (15 mi)
- Hampton, NH (17 mi)
- Sanford, ME (18 mi)
- Kennebunk, ME (22 mi)
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