13640 ZIP Code — Wellesley Island, NY

Jefferson County, New York

ZIP code 13640 is located in Wellesley Island, New York, within Jefferson County. It covers approximately 12.32 square miles and serves a population of 302 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 315.

About ZIP code 13640

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $341,500.

Median household income is $76,250. The poverty rate of 6% is below the national average. 85% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with professional and management as the leading industry. The average commute of 15 minutes is near the national average. Remote work is prevalent — 26% of workers work from home.

Educational attainment is high — 55% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%.

Overall, ZIP code 13640 reflects a community defined by a highly educated population, a strong veteran community, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

302

population

12.32

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

13640 ZIP code map

Cities in ZIP code 13640

Below are the cities the US Postal Service accepts for ZIP code 13640. Using any city not on this list may result in mail delivery delays.

City	Status
Wellesley Island	Acceptable
Wellesley Island	Preferred

Nearby ZIP codes

13607 Alexandria Bay (2.9 mi) 13656 La Fargeville (9.2 mi) 13624 Clayton (9.2 mi) 13679 Redwood (11.8 mi) 13691 Theresa (13.4 mi) 13622 Chaumont (16.9 mi) 13673 Philadelphia (17.5 mi) 13637 Evans Mills (17.9 mi) 13646 Hammond (18.4 mi) 13608 Antwerp (19 mi)

Demographics updated 05/2026

Population
Total population	302
Population density	25 / sq mi
State FIPS	36
County FIPS	045

Geography
Land area	12.32 sq mi
Water area	6.59 sq mi
Latitude	44.3241
Longitude	-75.9889
Timezone	Eastern (ET)
Area code	315

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.0%	45.1%	37.0%
$50k – $100k	36.4%	34.1%	27.0%
$100k – $200k	17.5%	18.0%	24.4%
Over $200k	4.2%	2.7%	11.5%

Demographics & statistics

302

Population

People per sq mi

66.8

Median age

$76,250

Median household income

$42,651

Per capita income

$341,500

Median home value

Median monthly rent

100.0%

Home ownership

6.2%

Poverty rate

42.6%

Unemployment

880

Housing units

54.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

20–24

25–34

35–44

45–54

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	30	9.9%
18 and over	272	90.1%
65 and over	183	60.6%
Median age	66.8 years

Race & ethnicity

White 98.3%

Two or more races 1.7%

Group	Count	%
White	297	98.3%
Two or more races	5	1.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.0%	45.1%	37.0%
$50k – $100k	36.4%	34.1%	27.0%
$100k – $200k	17.5%	18.0%	24.4%
Over $200k	4.2%	2.7%	11.5%

Under $10k 5.1%

$15k–$25k 14.7%

$25k–$35k 4.5%

$35k–$50k 4.5%

$50k–$75k 20.5%

$75k–$100k 16.7%

$100k–$150k 23.7%

$150k–$200k 7.7%

$200k+ 2.6%

Range	% of households
Under $10k	5.1%
$15k–$25k	14.7%
$25k–$35k	4.5%
$35k–$50k	4.5%
$50k–$75k	20.5%
$75k–$100k	16.7%
$100k–$150k	23.7%
$150k–$200k	7.7%
$200k+	2.6%
Median income	$76,250

Housing

Home values

Under $50k 1.9%

$50k–$100k 4.5%

$100k–$150k 2.6%

$150k–$200k 8.3%

$200k–$300k 21.8%

$300k–$500k 34.0%

$500k–$1M 18.6%

$1M+ 8.3%

Housing overview

Metric	Value
Median home value	$341,500
Median rent / month	$0
Owner occupied	100.0%
Renter occupied	0.0%
Vacant	82.3%
Single-family detached	73.8%
Large apartment buildings	0.0%
Mobile homes	3.5%
Median rooms	5.4
Avg household size (owned)	1.94

Year built

Era	%
2020 or later	0.0%
2010–2019	3.8%
2000–2009	10.8%
1990–1999	21.3%
1980–1989	21.9%
1970–1979	1.8%
1960–1969	8.4%
1950–1959	8.2%
1940–1949	2.7%
1939 or earlier	21.1%

Bedrooms

Size	% of units
No bedroom (studio)	2.8%
1 bedroom	8.4%
2 bedrooms	22.4%
3 bedrooms	43.9%
4 bedrooms	20.8%
5+ bedrooms	1.7%

Vehicles per household

Vehicles	% of households
No vehicle	1.3%
1 vehicle	30.8%
2 vehicles	56.4%
3 or more	11.5%

Heating fuel

Fuel type	%
Utility gas	3.8%
Electricity	18.6%
Propane / LP gas	44.9%
Fuel oil	28.2%

Households & families

Household type	Count	%
Married-couple family	58	37.2%
Cohabiting couple	15	9.6%
Male householder, no spouse	45	28.8%
Female householder, no spouse	38	24.4%
Households with children under 18	9	5.8%
Households with seniors (65+)	144	92.3%
Average household size	1.94

Marital status

Status	Male	Female
Never married	18.7%	25.6%
Married	43.2%	38.3%
Separated	2.2%	3.0%
Widowed	24.5%	25.6%
Divorced	11.5%	7.5%

Education

Less than 9th grade 2.5%

Some HS, no diploma 0.0%

HS graduate 29.5%

Some college, no degree 0.0%

Associate's degree 13.3%

Bachelor's degree 33.2%

Graduate / professional 21.6%

Metric	%
HS diploma or higher	97.5%
Bachelor's or higher	54.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	5	11.9%
Kindergarten	5	11.9%
Elementary school	15	35.7%
High school	0	0.0%
College / grad school	17	40.5%

Employment

Industry of employment

Professional & management 33.3%

Public administration 28.2%

Retail trade 15.4%

Manufacturing 12.8%

Education & healthcare 10.3%

Occupation

Category	%
Management, business & arts	30.8%
Service	12.8%
Sales & office	43.6%
Natural resources & construction	0.0%
Production & transportation	12.8%

Employment type

Type	%
Private sector	59.0%
Government	28.2%
Self-employed	12.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	66.7%
Carpool	0.0%
Public transit	0.0%
Walk	7.7%
Work from home	25.6%
Other means	0.0%
Avg commute (minutes)	15.3

Poverty

All people 6.2%

Under 18 years 0.0%

18 and over 6.6%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	85.3%
Retirement income	50.6%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	8.3%

Health indicators

Condition	%
Obesity	31.7%
High blood pressure	43.9%
High cholesterol	42.0%
Diabetes	13.3%
Heart disease	9.4%
Stroke	4.1%
Asthma	9.7%
Arthritis	34.6%
Kidney disease	3.9%
Pulmonary disease	9.5%
Cancer	10.1%

Behavior / access	%
Smoking	15.6%
Binge drinking	13.7%
No physical activity	25.9%
Less than 7 hrs sleep	30.4%
Depression	20.6%
Fair or poor health	13.9%
Poor mental health	12.0%
Poor physical health	11.3%
No health insurance	8.9%
Visited doctor (checkup)	84.2%
Visited dentist	66.6%
Cholesterol screening	94.5%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	39	14.3%

Disability	%
Any disability	17.5%
Under 18	0.0%
18–64 years	3.4%
65 and over	27.3%

Health insurance coverage

Type	%
Private insurance	69.2%
Public insurance	79.8%
No insurance	2.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	292	96.7%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	292	96.7%
Born in same state	292	96.7%
Born in different state	202	66.9%
Foreign born	0	0.0%
Naturalized citizen	10	3.3%
Not a US citizen	6	60.0%

Ancestry

Ancestry	Count	%
French	72	23.8%
Italian	30	9.9%
Arab	26	8.6%

Ancestry	Count	%
English	15	5%
German	4	1.3%
Norwegian	4	1.3%

Technology access

Metric	% of households
Computer access	51.7%
Internet access	100.0%

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

Frequently asked questions about ZIP code 13640

What city is ZIP code 13640 in?

ZIP code 13640 is primarily assigned to Wellesley Island, New York.

What county is ZIP code 13640 in?

ZIP code 13640 falls within Jefferson County, New York.

Does ZIP code 13640 have an older population?

61% of residents in ZIP code 13640 are 65 or older, above the national average of ~17%.

Does ZIP code 13640 have a large retiree population?

85% of households in ZIP code 13640 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 13640?

55% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 13640 have a large veteran population?

14% of civilians in ZIP code 13640 are veterans, above the national average of ~7%.

What timezone is ZIP code 13640 in?

ZIP code 13640 observes the EST timezone.