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 — CITY/NY/ROUND-LAKE

Round Lake ZIP code, New York

The ZIP code for Round Lake, NY is 12151, and its area codes are 518 and 838.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
915
Area codes
518, 838

Mail addressed to Round Lake uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Round Lake in numbers

About 915 people live in Round Lake, in 431 households. The median household income is $97,868 a year, 14% above the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $338,700 (20% below the New York median), and median gross rent is $1,615 a month. The median age is 49.9; 55.6% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 21 minutes.

Population915Round Lake915
Households431Round Lake431
Median age49.9Round Lake49.9New York39.8US 38.9
Median household income$97,868Round Lake$97,868New York$85,974US $80,734
Median home value$338,700Round Lake$338,700New York$423,800US $332,700
Median gross rent$1,615Round Lake$1,615New York$1,621US $1,413
Bachelor's degree or higher55.6%Round Lake55.6%New York40.2%US 35.7%
Mean commute21.3 minRound Lake21.3 minNew York32.6 minUS 26.4 min
Population density816 / sq miRound Lake816 / sq mi

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

ZIP codes addressed as Round Lake

ZIP codes with the USPS city name Round Lake
ZIP City Type Population Median income Median home
12151 Round Lake , NY Standard 967 $98,309 $342,800

Other ZIP codes overlapping Round Lake

These ZIP codes cover part of Round Lake but are addressed as somewhere else.

ZIP codes overlapping Round Lake
ZIP City Type Population Median income Median home
12118 Mechanicville , NY Standard 17,069 $92,710 $345,800

Map of Round Lake ZIP codes

12151

The ZIP codes of Round Lake, NY, 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 Round Lake

The nearest larger towns are Country Knolls (5,445 people, 2.1 mi), Ballston Spa (5,027 people, 5.6 mi) and Mechanicville (5,124 people, 5.9 mi).

Towns near Round Lake
TownPopulationDistance
Country Knolls 5,445 2.1 mi
Ballston Spa 5,027 5.6 mi
Mechanicville 5,124 5.9 mi
Clifton Knolls-Mill Creek 3,349 6.0 mi
Milton 4,450 7.5 mi
East Glenville 11,914 8.4 mi
Saratoga Springs 28,631 9.0 mi
Niskayuna 21,227 10.3 mi
Scotia 7,264 11.1 mi
Schenectady 68,847 11.5 mi
Cohoes 18,159 12.2 mi
Latham 13,802 13.7 mi
Rotterdam 22,695 13.7 mi
Green Island 2,970 14.1 mi

More nearby: every ZIP code in Saratoga County · New York ZIP codes

Cite this page

zipcodes.pro. “Round Lake, NY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ny/round-lake

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