Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/NH/COUNTY/SULLIVAN

Sullivan County, NH ZIP codes

There are 17 ZIP codes in Sullivan County, NH, in 17 towns, from 03280 to 03782. The largest are 03743 (Claremont), 03773 (Newport) and 03603 (Charlestown).

The county seat is Newport.

ZIP codes
17
Towns
17
County seat
Newport
County FIPS
33019
Population
43,715
Median household income
$80,858
Land area
538 sq mi
Area code
603

Sullivan County ZIP codes by town

Newport (county seat)
03773

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Sullivan County ZIP codes

0328003284036010360303605036070374303745037460375103752037530375403770037730378103782

The ZIP codes of Sullivan County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Sullivan County in numbers

About 43,715 people live in Sullivan County, in 16,618 households, the 9th most populous of New Hampshire's 10 counties. The median household income is $80,858 a year, 18% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $268,700 (33% below the New Hampshire median), and median gross rent is $1,211 a month. The median age is 47.0; 30.3% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 26 minutes.

Population43,715Sullivan43,715
Households16,618Sullivan16,618
Median age47.0Sullivan47.0New Hampshire43.3US 38.9
Median household income$80,858Sullivan$80,858New Hampshire$99,031US $80,734
Median home value$268,700Sullivan$268,700New Hampshire$402,500US $332,700
Median gross rent$1,211Sullivan$1,211New Hampshire$1,491US $1,413
Bachelor's degree or higher30.3%Sullivan30.3%New Hampshire40.6%US 35.7%
Mean commute26.1 minSullivan26.1 minNew Hampshire26.7 minUS 26.4 min
Population density81 / sq miSullivan81 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Sullivan County

Largest towns in Sullivan County
TownZIP codesPopulation
Claremont 1 13,078
Newport 1 4,758
Grantham 1 3,509
Sunapee 1 3,122
Cornish 1 1,816
Washington 1 1,224
Goshen 1 1,042
Lempster 1 907
Springfield 1 890
Charlestown 1 659
Meriden 1 604
Georges Mills 1 397
Acworth 1 382
South Acworth 1 368
Plainfield 1 220

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Sullivan County.

Not sure you are in Sullivan County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Sullivan County, with figures

ZIP codes in Sullivan County
ZIP City Type Population Median income Median home
03280 Washington , NH Standard 1,224 $90,096 $355,200
03284 Springfield , NH Standard 890 $113,158 $364,400
03601 Acworth , NH Standard 382 $81,250 $261,700
03603 Charlestown , NH Standard 5,238 $56,731 $230,400
03605 Lempster , NH Standard 907 $86,250 $239,300
03607 South Acworth , NH Standard 368 $84,306 $265,000
03743 Claremont , NH Standard 13,704 $59,625 $206,600
03745 Cornish , NH Standard 1,816 $91,821 $296,000
03746 Cornish Flat , NH No street area — — —
03751 Georges Mills , NH Standard 397 — —
03752 Goshen , NH Standard 1,042 $70,417 $255,600
03753 Grantham , NH Standard 3,509 $106,285 $343,900
03754 Guild , NH No street area — — —
03770 Meriden , NH Standard 604 $153,750 $594,400
03773 Newport , NH Standard 7,681 $81,232 $239,300
03781 Plainfield , NH Standard 1,918 $109,659 $426,400
03782 Sunapee , NH Standard 3,122 $110,175 $412,000

Cite this page

zipcodes.pro. “Sullivan County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nh/county/sullivan

Underlying data is public domain or openly licensed — sources, vintages and licences.