ZIP Codes of Hamilton County, NY

Population & People
Population & People
Total Population
4,220
Household Income
Household Income
Median Income
$81,192
Housing
Housing
Total Housing Units
7,336
Business & Economy
Business & Economy
Total Businesses
175
Employment
Employment
Employment Rate
47.04%
Education
Education
Bachelor's Degree+
35.33%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 11 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:11 ZIP Codes (10 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:315 / 518 / 680 / 838
Timezone:Eastern (GMT -05:00)
Local Time:2:13:15 PM
Population:4,220 [See All]
FIPS:36041
Land Area:1,561 sq mi
Water Area:91 sq mi
Coordinates:43.6701, -74.5004
Quick Link:
https://www.zip-codes.com/county/ny-hamilton.asp
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New York's oldest county
Median age 57.8.
Notable income spread
Median income ranges $55,625 to $155,536 across ZIPs — a 2.8× gap.
Wide geographic spread
ZIPs range from 411.0 sq mi down to 7.01 — a 59× sprawl ratio.

Standout ZIPs in this County


Most Populous
Indian Lake · 995 people
23.6% of county total
Highest Income
Blue Mountain Lake · $155,536 median
1.9× county average
Largest Land Area
Long Lake · 411.0 sq mi
Spans the most ground
Fastest Growth
— growth not calculable
Most Educated
— no education data

Things worth knowing about Hamilton County


4,220 residents live across 11 ZIPs covering 1,561 sq mi, served by 11 distinct USPS-recognized cities.

Population moved from 4,011 to 4,220 from 2014 to 2024 — a +5.2% change. 7 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 12812 (Blue Mountain Lake, $155,536 median) and poorest ZIP 12108 (Lake Pleasant, $55,625) are 26.0 miles apart — a 2.8× income gap across local geography.

Median home values vary 3.2× across this county — from $129,200 in 13353 (Hoffmeister) to $412,200 in 12812 (Blue Mountain Lake).

Density varies across the county — from 1 people/sq mi in 13353 (Hoffmeister) to 6 in 12164 (Speculator).

Educational attainment ranges from 19.6% bachelor's+ in 12190 (Wells) to 49.0% in 13360 (Inlet) — the breadth of educational profiles across the area.

Within New York, this is the #62 most populous of 62 counties and ranks #26 for median household income with the #4 fastest decade growth .

Weighted by population, the typical household earns about $73,764 across the county — reflecting what a typical resident sees, not a simple ZIP average.

35.3% of adults age 25+ hold a bachelor's degree or higher (1,241 of 3,513 reporting).

10 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Hamilton County


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
1,561
square miles
Avg density
2.7
people per sq mi
Population
4,220
across 11 ZIPs
Long Lake
411.0 sq mi
740 residents
Piseco
245.7 sq mi
227 residents
Indian Lake
195.2 sq mi
995 residents

All ZIP Codes in Hamilton County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
12842Indian LakeStandard995$58,702195.24.1%
12847Long LakeStandard740$70,962411.077.0%
12190WellsStandard671$74,286173.9-21.6%
12164SpeculatorStandard539$62,08397.845.7%
12108Lake PleasantStandard350$55,62574.2-21.3%
12812Blue Mountain LakeStandard265$155,53696.0103.8%
13360InletStandard227$107,75068.4-53.4%
12139PisecoStandard227$71,563245.70.4%
13436Raquette LakeStandard135$73,409100.2110.9%
13353HoffmeisterPO Box63$82,00091.8103.2%
12864SabaelStandard87.0-71.4%

Adjacent & Nearby Counties