Compare towns
Portsmouth vs Sullivan vs Dover
Cost, people, housing, commute and schools, side by side, each benchmarked against New Hampshire.
What stands out worked out from the figures below
Portsmouth has the most expensive homes ($689k median).
Sullivan has the most homeowners (93.6%).
Dover has grown the fastest since 2010 (+9.2%).
What matters to you?
Pick a few. We’ll pull those rows to the top and mark which town comes out ahead on each. There’s no overall score: what matters is up to you.
| Measure | Portsmouth | Sullivan | Dover |
|---|---|---|---|
| Your priorities | |||
| People | |||
| Population | 22,545 |
687Lowest |
33,364Highest |
| Growth since 20102010 → 2020 census | +5.7% NH: +4.6% |
-2.8%Lowest NH: +4.6% |
+9.2%Highest NH: +4.6% |
| Median age | 42.9±2 about the NH average |
46.6±6.5Highest 8% above NH |
36.9±1.9Lowest 15% below NH |
| Sullivan and Portsmouth are within the Census margin of error here, so we can’t say which is really higher. | |||
| Kids under 18 | 14%±1.9Lowest NH: 18.2% |
16.3%±5 NH: 18.2% |
16.9%±1.8Highest NH: 18.2% |
| Dover and Sullivan are within the Census margin of error here, so we can’t say which is really higher. | |||
| Age 65+ | 21.9%±2.4Highest NH: 20.1% |
20.5%±3.6 NH: 20.1% |
16.8%±1.8Lowest NH: 20.1% |
| Portsmouth and Sullivan are within the Census margin of error here, so we can’t say which is really higher. | |||
| Bachelor’s degree+adults 25+ | 64%Highest NH: 40.6% |
28.5%Lowest NH: 40.6% |
52% NH: 40.6% |
| Enrolled in collegeshare of residents | 3.8%±1.2Lowest NH: 6% |
3.9%±2.6 NH: 6% |
6.2%±1.2Highest NH: 6% |
| Dover and Sullivan are within the Census margin of error here, so we can’t say which is really higher. | |||
| Cost of living | |||
| Household incomemedian | $106,219±$7k 7% above NH |
$106,667±$20kHighest 8% above NH |
$94,829±$7kLowest 4% below NH |
| Sullivan and Portsmouth are within the Census margin of error here, so we can’t say which is really higher. | |||
| Home valuemedian, owner-occupied | $688,500±$39kHighest 71% above NH |
$236,500±$29kLowest 41% below NH |
$436,700±$20k 8% above NH |
| Rentmedian gross, monthly | $1,869±$111Highest 25% above NH |
$1,225±$275Lowest 18% below NH |
$1,607±$100 8% above NH |
| Property taxmedian, yearly | $8,018 20% above NH |
$5,099Lowest 24% below NH |
$8,249Highest 24% above NH |
| Renters paying 30%+of income on rent | 50.4%±7.2Highest NH: 48.2% |
40%±84.5Lowest NH: 48.2% |
48.6%±6.3 NH: 48.2% |
| Portsmouth and Dover are within the Census margin of error here, so we can’t say which is really higher. | |||
| Below poverty line | 6.8% NH: 7.2% |
4.1%Lowest NH: 7.2% |
8.3%Highest NH: 7.2% |
| Housing | |||
| Homeownersof occupied homes | 51.9%Lowest NH: 72.8% |
93.6%Highest NH: 72.8% |
52.7% NH: 72.8% |
| Typical home builtmedian year | 1959Lowest 20 yrs older than NH |
1979Highest same as NH |
1976 3 yrs older than NH |
| Getting to work | |||
| Average commuteone way | 22 minLowest 17% below NH |
32 minHighest 20% above NH |
23 min 15% below NH |
| Work from home | 21.9%±4Highest NH: 16.8% |
4.2%±2.5Lowest NH: 16.8% |
18.6%±2.5 NH: 16.8% |
| Portsmouth and Dover are within the Census margin of error here, so we can’t say which is really higher. | |||
| Schools | |||
| Public school scoresrank in state, math + reading | #11 of 120 in NH | — | #64 of 120 in NH |
| School district | Portsmouth School District | — | Dover School District |
| High school in town | Portsmouth High School | — | Dover Senior High School |
| Students per teacherat that high school | 11.4Lowest |
— | 12.7Highest |
| On TownTapestry | |||
| Old photos in Our Story | None yet | None yet | None yet |
NH average · Sources: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024; 2010 & 2020 decennial census; NCES Common Core of Data. “±” is the Census margin of error. Property tax is top-coded by the Census at $10,000+. School rank compares math and reading proficiency against the state average.