ZIP Codes of Grafton County, NH

Population & People
Population & People
Total Population
92,200
Household Income
Household Income
Median Income
$95,204
Housing
Housing
Total Housing Units
51,967
Business & Economy
Business & Economy
Total Businesses
2,920
Employment
Employment
Employment Rate
58.57%
Education
Education
Bachelor's Degree+
46.70%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 39 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:39 ZIP Codes (34 Standard, 5 PO Box, 0 Unique) [See All]
Area Code:603
Timezone:Eastern (GMT -05:00)
Local Time:2:13:09 PM
Population:92,200 [See All]
FIPS:33009
CBSA:Lebanon-Claremont, NH-VT
Land Area:1,669 sq mi
Water Area:41 sq mi
Coordinates:43.9022, -71.9031
Quick Link:
https://www.zip-codes.com/county/nh-grafton.asp
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New Hampshire's most-educated county
46.7% of adults 25+ have a bachelor's degree+.
Sharp income gradient
Wealthiest ZIP earns 4.6× the poorest — $250,001 vs $54,607.
New Hampshire's largest county by area
Spans 1,669 sq mi — the largest of 11 counties.
Extreme geographic sprawl
The largest ZIP spans 1688× the smallest by area — 177.1 sq mi down to 0.10.
Extreme education divide
Bachelor's share ranges 9.6% to 96.8% across ZIPs — a 87-point gap.

Standout ZIPs in this County


Most Populous
Lebanon · 11,195 people
12.1% of county total
Highest Income
Etna · $250,001 median
2.6× county average
Largest Land Area
Lincoln · 177.1 sq mi
Spans the most ground
Fastest Growth
Lebanon · 19.8% (10-yr)
9,345 → 11,195 residents
Most Educated
Hanover · 87.0% bachelor's+
4,538 of 5,219 adults 25+

Things worth knowing about Grafton County


92,200 residents live across 39 ZIPs covering 1,669 sq mi, served by 38 distinct USPS-recognized cities.

Population moved from 89,441 to 92,200 from 2014 to 2024 — a +3.1% change. 21 ZIPs gained residents, 15 lost.

The county's wealthiest ZIP 03750 (Etna, $250,001 median) and poorest ZIP 03217 (Ashland, $54,607) are 27.4 miles apart — a 4.6× income gap across local geography.

Median home values vary 3.9× across this county — from $227,000 in 03217 (Ashland) to $881,000 in 03750 (Etna).

Density varies 54× across the county — from 8 people/sq mi in 03251 (Lincoln) to 444 in 03784 (West Lebanon).

Educational attainment ranges from 9.6% bachelor's+ in 03774 (North Haverhill) to 96.8% in 03750 (Etna) — the breadth of educational profiles across the area.

Within New Hampshire, this is the #5 most populous of 11 counties and ranks #6 for median household income .

Weighted by population, the typical household earns about $97,968 across the county — reflecting what a typical resident sees, not a simple ZIP average.

46.7% of adults age 25+ hold a bachelor's degree or higher (31,055 of 66,504 reporting).

34 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Grafton County


Higher-education hub

4 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.

Etna
96.8%
1,116 residents
Hanover
87.0%
10,569 residents
Lyme
70.1%
1,710 residents
Pike
60.8%
1,071 residents

Two counties in one

Median household income spans 4.6× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.

Wealthiest ZIP
Etna
Median income: $250,001
Population: 1,116
Bachelor's+: 96.8%
vs
Poorest ZIP (pop >= 500)
Ashland
Median income: $54,607
Population: 2,183
Bachelor's+: 35.9%
For every $1 of household income in 03217, the typical household in 03750 earns $4.58.

Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,669
square miles
Avg density
55.2
people per sq mi
Population
92,200
across 39 ZIPs
Lincoln
177.1 sq mi
1,461 residents
Rumney
126.2 sq mi
2,130 residents
Canaan
79.2 sq mi
4,131 residents

All ZIP Codes in Grafton County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
03766LebanonStandard11,195$100,88132.319.8%
03755HanoverStandard10,569$165,88427.91.3%
03264PlymouthStandard6,885$76,89237.9-7.6%
03222BristolStandard6,097$81,58776.99.4%
03561LittletonStandard6,040$56,74654.01.4%
03748EnfieldStandard4,563$95,08944.3-0.5%
03741CanaanStandard4,131$82,18179.2-2.1%
03784West LebanonStandard3,804$91,0008.6-4.9%
03223CamptonStandard3,441$118,53457.91.5%
03285ThorntonStandard2,799$90,02248.012.9%
03574BethlehemStandard2,573$81,25051.01.4%
03585LisbonStandard2,456$68,59477.3-4.1%
03217AshlandStandard2,183$54,60711.65.7%
03266RumneyStandard2,130$76,071126.2-6.7%
03785WoodsvilleStandard2,018$57,90273.9-27.8%
03245HoldernessStandard1,917$107,86335.7-1.4%
03768LymeStandard1,710$133,90654.9-1.3%
03251LincolnStandard1,461$70,625177.111.6%
03774North HaverhillStandard1,420$58,45227.3-17.0%
03580FranconiaStandard1,402$91,25054.1-1.3%
03240GraftonStandard1,354$81,56342.45.9%
03777OrfordStandard1,295$92,57147.9-17.6%
03241HebronStandard1,150$91,37539.324.3%
03262North WoodstockStandard1,142$85,66761.49.5%
03750EtnaStandard1,116$250,00121.14.0%
03740BathStandard1,097$67,81338.359.2%
03780PikeStandard1,071$189,55019.9160.0%
03282WentworthStandard1,052$98,33341.617.4%
03279WarrenStandard878$70,31349.541.6%
03779PiermontStandard868$80,00039.815.1%
03771MonroeStandard786$88,15023.4-10.4%
03586Sugar HillStandard658$154,09117.09.7%
03765HaverhillStandard513$79,6254.011.5%
03215Waterville ValleyPO Box290$105,62567.611.5%
03293WoodstockPO Box72$86,2500.0-23.4%
03238GlencliffPO Box64$47,0670.0-39.6%
03769Lyme CenterPO Box0.0
03749Enfield CenterPO Box0.0
03756LebanonStandard0.1

Adjacent & Nearby Counties