12151 ZIP Code — Round Lake, NY

Saratoga County, New York

ZIP code 12151 is located in Round Lake, New York, within Saratoga County. It covers approximately 2.61 square miles and serves a population of 871 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 518/838.

About ZIP code 12151

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $280,500. Owner-occupancy is high at 89%, well above the national average.

Median household income is $90,833. The poverty rate of 3% is below the national average.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 12151 reflects a community defined by a highly educated population and high homeownership.

871

population

2.61

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

12151 ZIP code map

Cities in ZIP code 12151

Below are the cities the US Postal Service accepts for ZIP code 12151. Using any city not on this list may result in mail delivery delays.

City	Status
Round Lake	Acceptable
Round Lake	Preferred

Nearby ZIP codes

12118 Mechanicville (2.6 mi) 12065 Clifton Park (5 mi) 12148 Rexford (6.1 mi) 12019 Ballston Lake (6.3 mi) 12027 Burnt Hills (6.3 mi) 12020 Ballston Spa (7.1 mi) 12188 Waterford (8.1 mi) 12170 Stillwater (8.4 mi) 12154 Schaghticoke (9 mi) 12866 Saratoga Springs (9 mi) 12309 Schenectady (9.6 mi) 12308 Schenectady (9.7 mi)

Demographics updated 05/2026

Population
Total population	871
Population density	334 / sq mi
State FIPS	36
County FIPS	091

Geography
Land area	2.61 sq mi
Water area	0.24 sq mi
Latitude	42.9216
Longitude	-73.7844
Timezone	Eastern (ET)
Area code	518/838

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.8%	27.6%	37.0%
$50k – $100k	64.7%	30.1%	27.0%
$100k – $200k	22.3%	32.0%	24.4%
Over $200k	4.2%	10.3%	11.5%

Demographics & statistics

871

Population

334

People per sq mi

46.5

Median age

$90,833

Median household income

$48,860

Per capita income

$280,500

Median home value

$1,667

Median monthly rent

89.1%

Home ownership

2.9%

Poverty rate

2.5%

Unemployment

391

Housing units

53.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	161	18.5%
18 and over	710	81.5%
65 and over	167	19.2%
Median age	46.5 years

Race & ethnicity

White 94.8%

Black or African American 2.3%

Asian 1.1%

Two or more races 1.1%

Hispanic or Latino 0.7%

Group	Count	%
White	831	94.8%
Black or African American	20	2.3%
Asian	10	1.1%
Two or more races	10	1.1%
Hispanic or Latino	6	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.8%	27.6%	37.0%
$50k – $100k	64.7%	30.1%	27.0%
$100k – $200k	22.3%	32.0%	24.4%
Over $200k	4.2%	10.3%	11.5%

Under $10k 2.6%

$15k–$25k 1.3%

$25k–$35k 0.5%

$35k–$50k 6.0%

$50k–$75k 25.0%

$75k–$100k 17.7%

$100k–$150k 27.3%

$150k–$200k 7.0%

$200k+ 12.5%

Range	% of households
Under $10k	2.6%
$15k–$25k	1.3%
$25k–$35k	0.5%
$35k–$50k	6.0%
$50k–$75k	25.0%
$75k–$100k	17.7%
$100k–$150k	27.3%
$150k–$200k	7.0%
$200k+	12.5%
Median income	$90,833

Housing

Home values

$100k–$150k 0.9%

$150k–$200k 17.8%

$200k–$300k 36.0%

$300k–$500k 41.8%

$500k–$1M 3.5%

Housing overview

Metric	Value
Median home value	$280,500
Median rent / month	$1,667
Owner occupied	89.1%
Renter occupied	10.9%
Vacant	11.3%
Single-family detached	74.1%
Large apartment buildings	0.0%
Mobile homes	1.8%
Median rooms	6.5
Avg household size (owned)	2.28

Year built

Era	%
2020 or later	3.7%
2010–2019	18.9%
2000–2009	0.2%
1990–1999	8.5%
1980–1989	2.5%
1970–1979	9.5%
1960–1969	4.6%
1950–1959	3.0%
1940–1949	5.5%
1939 or earlier	43.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.8%
2 bedrooms	22.9%
3 bedrooms	50.6%
4 bedrooms	17.8%
5+ bedrooms	6.9%

Vehicles per household

Vehicles	% of households
No vehicle	0.8%
1 vehicle	32.8%
2 vehicles	51.6%
3 or more	14.8%

Heating fuel

Fuel type	%
Utility gas	80.7%
Electricity	2.1%
Propane / LP gas	4.2%
Fuel oil	7.3%
Wood	2.1%
Solar	3.6%

Households & families

Household type	Count	%
Married-couple family	197	51.3%
Cohabiting couple	48	12.5%
Male householder, no spouse	58	15.1%
Female householder, no spouse	81	21.1%
Households with children under 18	98	25.5%
Households with seniors (65+)	96	25.0%
Average household size	2.27

Marital status

Status	Male	Female
Never married	28.0%	13.3%
Married	57.1%	57.8%
Separated	1.9%	4.4%
Widowed	0.3%	5.6%
Divorced	12.7%	18.9%

Education

Less than 9th grade 0.0%

Some HS, no diploma 5.0%

HS graduate 19.9%

Some college, no degree 11.8%

Associate's degree 9.6%

Bachelor's degree 31.7%

Graduate / professional 22.1%

Metric	%
HS diploma or higher	95.0%
Bachelor's or higher	53.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	34	21.5%
Kindergarten	3	1.9%
Elementary school	75	47.5%
High school	20	12.7%
College / grad school	26	16.5%

Employment

Industry of employment

Education & healthcare 31.8%

Manufacturing 12.5%

Professional & management 10.9%

Public administration 10.9%

Finance & real estate 9.7%

Construction 8.8%

Arts, food & hospitality 5.3%

Transportation & utilities 2.8%

Retail trade 2.3%

Other services 1.9%

Information 1.6%

Wholesale trade 1.4%

Occupation

Category	%
Management, business & arts	62.2%
Service	8.8%
Sales & office	10.0%
Natural resources & construction	11.1%
Production & transportation	7.9%

Employment type

Type	%
Private sector	61.5%
Government	30.2%
Self-employed	8.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	86.5%
Carpool	4.7%
Public transit	0.0%
Walk	3.7%
Work from home	5.1%
Other means	0.0%
Avg commute (minutes)	22.2

Poverty

All people 2.9%

Under 18 years 0.0%

18 and over 3.5%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	29.4%
Retirement income	26.0%
Supplemental Security	0.3%
Cash public assistance	5.2%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	26.7%
High blood pressure	29.3%
High cholesterol	32.9%
Diabetes	7.1%
Heart disease	5.1%
Stroke	2.1%
Asthma	9.4%
Arthritis	21.9%
Kidney disease	2.3%
Pulmonary disease	5.0%
Cancer	7.1%

Behavior / access	%
Smoking	13.8%
Binge drinking	18.5%
No physical activity	17.7%
Less than 7 hrs sleep	30.8%
Depression	18.7%
Fair or poor health	8.2%
Poor mental health	12.0%
Poor physical health	7.7%
No health insurance	7.0%
Visited doctor (checkup)	78.6%
Visited dentist	75.2%
Cholesterol screening	93.6%
Teeth loss	7.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	43	6.1%

Disability	%
Any disability	7.8%
Under 18	18.6%
18–64 years	1.3%
65 and over	18.6%

Health insurance coverage

Type	%
Private insurance	89.9%
Public insurance	35.9%
No insurance	1.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	818	93.9%
Spanish	12	1.5%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	841	96.6%
Born in same state	816	93.7%
Born in different state	615	70.6%
Foreign born	25	2.9%
Naturalized citizen	30	3.4%
Not a US citizen	24	80.0%

Ancestry

Ancestry	Count	%
Italian	201	23.1%
French	146	16.8%
German	10	1.1%

Ancestry	Count	%
English	8	0.9%
Polish	5	0.6%

Technology access

Metric	% of households
Computer access	44.1%
Internet access	95.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 12151

What city is ZIP code 12151 in?

ZIP code 12151 is primarily assigned to Round Lake, New York.

What county is ZIP code 12151 in?

ZIP code 12151 falls within Saratoga County, New York.

Is ZIP code 12151 mostly owner-occupied?

89% of occupied units in ZIP code 12151 are owner-occupied, well above the national average.

How educated is the population of ZIP code 12151?

54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the population of ZIP code 12151?

ZIP code 12151 has an estimated population of 871 residents, with a density of 334 people per square mile.

What is the median household income in ZIP code 12151?

The median household income in ZIP code 12151 is $90,833, above the national median of ~$75,000.

What timezone is ZIP code 12151 in?

ZIP code 12151 observes the EST timezone.