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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/NH/MOUNTAIN-LAKES

Mountain Lakes ZIP codes, New Hampshire

No ZIP code is named for Mountain Lakes, NH; addresses there use a neighbouring town's name. 3 ZIP codes cover it: 03785, 03774 and 03740. Its area code is 603.

USPS city name
0 ZIP codes
Overlapping the city
3 more
Population
354
Area code
603

NANPA lists no telephone rate centre for Mountain Lakes itself, so these are the area codes of the nearest one, Woodsville (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Mountain Lakes in numbers

About 354 people live in Mountain Lakes, in 174 households. The median household income is $35,603 a year, 64% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $264,800 (34% below the New Hampshire median). The median age is 56.5; 19.0% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 27 minutes.

Population354Mountain Lakes354
Households174Mountain Lakes174
Median age56.5Mountain Lakes56.5New Hampshire43.3US 38.9
Median household income$35,603Mountain Lakes$35,603New Hampshire$99,031US $80,734
Median home value$264,800Mountain Lakes$264,800New Hampshire$402,500US $332,700
Bachelor's degree or higher19.0%Mountain Lakes19.0%New Hampshire40.6%US 35.7%
Mean commute27.0 minMountain Lakes27.0 minNew Hampshire26.7 minUS 26.4 min
Population density101 / sq miMountain Lakes101 / sq mi

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

ZIP codes covering Mountain Lakes

These ZIP codes cover part of Mountain Lakes but are addressed as somewhere else.

ZIP codes overlapping Mountain Lakes
ZIP City Type Population Median income Median home
03740 Bath , NH Standard 1,097 $67,813 $234,400
03774 North Haverhill , NH Standard 1,420 $58,452 $227,900
03785 Woodsville , NH Standard 2,018 $57,902 $244,100

Map of Mountain Lakes ZIP codes

037400377403785

The ZIP codes of Mountain Lakes, NH, 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.

Towns near Mountain Lakes

The nearest larger towns are Woodsville (1,422 people, 3.6 mi), North Haverhill (728 people, 3.8 mi) and Newbury, VT (393 people, 5.8 mi).

Towns near Mountain Lakes
TownPopulationDistance
Littleton 4,114 17.0 mi
St. Johnsbury, VT 5,859 21.3 mi
Barre, VT 8,412 27.8 mi
Plymouth 4,969 29.5 mi

More nearby: every ZIP code in Grafton County · New Hampshire ZIP codes

Cite this page

zipcodes.pro. “Mountain Lakes, NH ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nh/mountain-lakes

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