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 — STATE/NY/COUNTY/HAMILTON

Hamilton County, NY ZIP codes

There are 13 ZIP codes in Hamilton County, NY, in 13 towns, from 12032 to 13436. The largest are 12134 (Northville), 12842 (Indian Lake) and 12032 (Caroga Lake).

The county seat is Lake Pleasant.

ZIP codes
13
Towns
13
County seat
Lake Pleasant
County FIPS
36041
Population
5,089
Median household income
$68,835
Land area
1,717 sq mi

Hamilton County ZIP codes by town

Lake Pleasant (county seat)
12108

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 Hamilton County ZIP codes

The ZIP codes of Hamilton 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.

Hamilton County in numbers

About 5,089 people live in Hamilton County, in 2,423 households, the 62nd most populous of New York's 62 counties. The median household income is $68,835 a year, 20% below the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $260,200 (39% below the New York median), and median gross rent is $912 a month. The median age is 58.1; 33.2% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 23 minutes.

Population5,089Hamilton5,089
Households2,423Hamilton2,423
Median age58.1Hamilton58.1New York39.8US 38.9
Median household income$68,835Hamilton$68,835New York$85,974US $80,734
Median home value$260,200Hamilton$260,200New York$423,800US $332,700
Median gross rent$912Hamilton$912New York$1,621US $1,413
Bachelor's degree or higher33.2%Hamilton33.2%New York40.2%US 35.7%
Mean commute22.6 minHamilton22.6 minNew York32.6 minUS 26.4 min
Population density3 / sq miHamilton3 / 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 Hamilton County

Largest towns in Hamilton County
TownZIP codesPopulation
Northville 1 1,038
Indian Lake 1 995
Long Lake 1 716
Wells 1 581
Caroga Lake 1 448
Speculator 1 409
Lake Pleasant 1 350
Blue Mountain Lake 1 265
Inlet 1 227
Piseco 1 227
Raquette Lake 1 135
Hoffmeister 1 63
Sabael 1 8

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 Hamilton County.

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

Every ZIP code in Hamilton County, with figures

ZIP codes in Hamilton County
ZIP City Type Population Median income Median home
12032 Caroga Lake , NY Standard 662 $65,789 $182,300
12108 Lake Pleasant , NY Standard 350 $55,625 $339,100
12134 Northville , NY Standard 3,846 $77,928 $222,600
12139 Piseco , NY Standard 227 $71,563 $260,300
12164 Speculator , NY Standard 539 $62,083 $226,800
12190 Wells , NY Standard 671 $74,286 $268,600
12812 Blue Mountain Lake , NY Standard 265 $155,536 $412,200
12842 Indian Lake , NY Standard 995 $58,702 $220,200
12847 Long Lake , NY Standard 740 $70,962 $276,000
12864 Sabael , NY Standard 8 — —
13353 Hoffmeister , NY Standard 63 $82,000 $129,200
13360 Inlet , NY Standard 227 $107,750 $344,200
13436 Raquette Lake , NY Standard 135 $73,409 $350,000

Cite this page

zipcodes.pro. “Hamilton County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ny/county/hamilton

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