
Grafton County · New Hampshire
ZIP code 03780
- Population
- 599
- Median income
- $145,163
- Median home
- —
- Sales tax
- 0%
ZCTA residents
Household, past 12 months
Owner-occupied value
New Hampshire state rate
Quick answer
ZIP 03780 sits in Grafton County, New Hampshire and is home to 599 people. Median household income is $145,163, the median home is worth — and median gross rent is —. 100% of households own their home, and purchases are taxed at 0% (New Hampshire state rate).
- County
- Grafton County
- State
- New Hampshire (NH)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 33009
246 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 03780
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 599ZIP 03780 residents
- Median household income
- $145,163Past 12 months, inflation adjusted
- Median home value
- —Owner-occupied units
- Median gross rent
- —Rent plus utilities, monthly
- Median age
- 54.3 yrsAll residents
- Homeownership rate
- 100%Owner-occupied households
ZIP 03780 in context
How this area compares with national benchmarks.
ZIP 03780 is a very small community in Grafton County, New Hampshire, with 599 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #220 of 246 ranked by population — larger than 10% of them. The median age here is 54.3 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.
Households in ZIP 03780 earn a median of $145,163 a year, 84.8% above the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 10.4% of residents here, below the 12.4% national rate.
The typical owner-occupied home in ZIP 03780 is valued at not published, while median gross rent runs not published a month. 100% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.
A median age of 54.3 puts ZIP 03780 well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 599 residents, a handful of survey responses moves every median on this page. Compare ZIP 03780 against its county rather than against national figures.
The Census withheld home value, gross rent for ZIP 03780 because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.
Reading ZIP 03780 in context
How 03780 sits inside Grafton County and New Hampshire.
ZIP 03780 is tabulated inside Grafton County, New Hampshire, one of 36 ZIP areas the Census publishes for that county and 246 across New Hampshire. Fewer than 2,500 people are counted here, so the ZIP behaves like a village delivery route rather than a neighbourhood. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 03780 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.
Against its own county, 03780 reports a median household income of $145,163, 79% above the $81,094 county median, and 56% above the $92,797 typical NH ZIP. Owner-occupied homes are valued at a median of not published. Rent is reported gross — the contract amount plus tenant-paid utilities — at not published a month, which is why it reads higher than the advertised rent on a listing for the same unit.
New Hampshire charges 0% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 03780.
Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 03780 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.
Sales tax in 03780
What a purchase inside this ZIP costs at checkout.
New Hampshire levies 0% statewide with no local add-ons. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 03780 compares
ZIP 03780 against the median ZIP in Grafton County and across New Hampshire.
| Measure | ZIP 03780 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $145,163 | $81,094 | $92,797 | +56% |
| Median home value | — | $285,100 | $339,600 | — |
| Median gross rent | — | $1,193 | $1,302 | — |
| Population | 599 | 1,545 | 2,738 | -78% |
Medians are computed across the 36 ZIP areas in Grafton County and the 246 ZIP areas in New Hampshire.
Statewide rank
Where this ZIP places among all 246 New Hampshire ZIP areas.
- Income
- #19
- Home value
- —
- Population
- #220
richer than 92% of 235 state ZIPs
Not published
larger than 11% of 246 state ZIPs
Comparable ZIP codes
New Hampshire ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Grafton County.
Adjacent ZIP Codes
Other ZIP codes in Grafton County, New Hampshire.
ZIP 03780 questions
Common questions about this ZIP code.
- Where is ZIP code 03780?
- ZIP 03780 lies mostly in Grafton County, New Hampshire. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 03780?
- New Hampshire charges 0% statewide.
- Is 03780 expensive to live in?
- Median rent runs — a month, and the median home is worth — — — against the typical New Hampshire ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- New Hampshire Department of Revenue Administration — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.