13803 ZIP Code — Marathon, NY

Cortland County, New York

ZIP code 13803 is located in Marathon, New York, within Cortland County. It covers approximately 93.49 square miles and serves a population of 4,278 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 607.

About ZIP code 13803

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 $129,200. Owner-occupancy is high at 83%, well above the national average.

Median household income is $59,154. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 31 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 11% of civilians, above the national average of 7%.

Overall, ZIP code 13803 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

4,278

population

93.49

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

13803 ZIP code map

Cities in ZIP code 13803

Below are the cities the US Postal Service accepts for ZIP code 13803. Using any city not on this list may result in mail delivery delays.

City	Status
Marathon	Acceptable
Marathon	Preferred

Nearby ZIP codes

13101 Mc Graw (8.3 mi) 13835 Richford (8.5 mi) 13863 Willet (9.1 mi) 13053 Dryden (10 mi) 13040 Cincinnatus (10.1 mi) 13045 Cortland (10.4 mi) 13797 Lisle (10.5 mi) 13862 Whitney Point (13 mi) 13736 Berkshire (13.2 mi) 13841 Smithville Flats (13.3 mi) 13136 Pitcher (14.8 mi) 13801 Mc Donough (15.1 mi)

Demographics updated 06/2026

Population
Total population	4,278
Population density	46 / sq mi
State FIPS	36
County FIPS	023

Geography
Land area	93.49 sq mi
Water area	0.30 sq mi
Latitude	42.4818
Longitude	-76.0736
Timezone	Eastern (ET)
Area code	607

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.9%	42.3%	37.0%
$50k – $100k	37.0%	34.5%	27.0%
$100k – $200k	20.5%	20.0%	24.4%
Over $200k	0.6%	3.2%	11.5%

Demographics & statistics

4,278

Population

People per sq mi

33.9

Median age

$59,154

Median household income

$26,095

Per capita income

$129,200

Median home value

$926

Median monthly rent

83.0%

Home ownership

15.1%

Poverty rate

7.6%

Unemployment

1,433

Housing units

13.9%

Bachelor's or higher

Age distribution

Male Female

180

Under 5

196

191

5–9

207

168

10–14

183

15–19

102

142

20–24

155

282

25–34

306

234

35–44

255

161

45–54

176

126

55–59

137

117

60–64

127

182

65–74

199

125

75–84

136

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,277	29.9%
18 and over	3,001	70.1%
65 and over	739	17.3%
Median age	33.9 years

Race & ethnicity

White 94.8%

Two or more races 2.9%

Hispanic or Latino 1.9%

Asian 0.2%

Black or African American 0.1%

American Indian / Alaska Native 0.1%

Other race 0.1%

Group	Count	%
White	4,134	94.8%
Two or more races	126	2.9%
Hispanic or Latino	82	1.9%
Asian	7	0.2%
Black or African American	5	0.1%
American Indian / Alaska Native	3	0.1%
Other race	3	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.9%	42.3%	37.0%
$50k – $100k	37.0%	34.5%	27.0%
$100k – $200k	20.5%	20.0%	24.4%
Over $200k	0.6%	3.2%	11.5%

Under $10k 2.7%

$10k–$15k 2.5%

$15k–$25k 5.4%

$25k–$35k 10.1%

$35k–$50k 21.3%

$50k–$75k 19.2%

$75k–$100k 10.7%

$100k–$150k 18.8%

$150k–$200k 7.6%

$200k+ 1.7%

Range	% of households
Under $10k	2.7%
$10k–$15k	2.5%
$15k–$25k	5.4%
$25k–$35k	10.1%
$35k–$50k	21.3%
$50k–$75k	19.2%
$75k–$100k	10.7%
$100k–$150k	18.8%
$150k–$200k	7.6%
$200k+	1.7%
Median income	$59,154

Housing

Home values

Under $50k 9.1%

$50k–$100k 19.2%

$100k–$150k 31.1%

$150k–$200k 21.4%

$200k–$300k 12.9%

$300k–$500k 5.3%

$500k–$1M 0.4%

$1M+ 0.6%

Housing overview

Metric	Value
Median home value	$129,200
Median rent / month	$926
Owner occupied	83.0%
Renter occupied	17.0%
Vacant	10.7%
Single-family detached	70.2%
Large apartment buildings	0.0%
Mobile homes	20.7%
Median rooms	6.2
Avg household size (owned)	2.87

Year built

Era	%
2020 or later	0.0%
2010–2019	5.0%
2000–2009	5.7%
1990–1999	14.7%
1980–1989	15.1%
1970–1979	13.3%
1960–1969	4.6%
1950–1959	3.8%
1940–1949	3.8%
1939 or earlier	34.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	8.6%
2 bedrooms	22.1%
3 bedrooms	40.8%
4 bedrooms	16.0%
5+ bedrooms	11.6%

Vehicles per household

Vehicles	% of households
No vehicle	5.7%
1 vehicle	29.2%
2 vehicles	39.4%
3 or more	25.8%

Heating fuel

Fuel type	%
Utility gas	0.8%
Electricity	21.9%
Propane / LP gas	20.3%
Fuel oil	27.4%
Wood	22.0%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	808	53.5%
Cohabiting couple	233	15.4%
Male householder, no spouse	190	12.6%
Female householder, no spouse	278	18.4%
Households with children under 18	553	36.6%
Households with seniors (65+)	510	33.8%
Average household size	2.83

Marital status

Status	Male	Female
Never married	27.0%	29.2%
Married	56.0%	49.6%
Separated	2.1%	3.6%
Widowed	4.1%	7.5%
Divorced	10.7%	10.2%

Education

Less than 9th grade 5.4%

Some HS, no diploma 8.6%

HS graduate 37.8%

Some college, no degree 19.8%

Associate's degree 14.5%

Bachelor's degree 6.6%

Graduate / professional 7.3%

Metric	%
HS diploma or higher	86.0%
Bachelor's or higher	13.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	81	7.9%
Kindergarten	125	12.3%
Elementary school	541	53.1%
High school	179	17.6%
College / grad school	93	9.1%

Employment

Industry of employment

Education & healthcare 30.1%

Retail trade 14.2%

Manufacturing 12.4%

Construction 8.1%

Professional & management 6.2%

Transportation & utilities 5.0%

Agriculture & mining 4.5%

Finance & real estate 4.4%

Public administration 4.1%

Other services 3.7%

Arts, food & hospitality 3.5%

Wholesale trade 2.4%

Information 1.2%

Occupation

Category	%
Management, business & arts	26.7%
Service	21.6%
Sales & office	17.8%
Natural resources & construction	17.2%
Production & transportation	16.7%

Employment type

Type	%
Private sector	70.1%
Government	20.3%
Self-employed	9.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.9%
Carpool	7.9%
Public transit	0.1%
Walk	3.1%
Work from home	8.3%
Other means	0.7%
Avg commute (minutes)	30.7

Poverty

All people 15.1%

Under 18 years 21.9%

18 and over 12.3%

Married-couple families 10.3%

Female-led households 12.2%

Income support

Source	% of households
Social Security	37.4%
Retirement income	32.2%
Supplemental Security	5.9%
Cash public assistance	2.5%
Food stamps / SNAP	12.5%

Health indicators

Condition	%
Obesity	30.0%
High blood pressure	32.0%
High cholesterol	32.6%
Diabetes	9.3%
Heart disease	6.5%
Stroke	3.0%
Asthma	10.4%
Arthritis	25.0%
Kidney disease	2.8%
Pulmonary disease	7.5%
Cancer	6.7%

Behavior / access	%
Smoking	19.2%
Binge drinking	18.6%
No physical activity	24.5%
Less than 7 hrs sleep	36.1%
Depression	21.7%
Fair or poor health	13.0%
Poor mental health	14.9%
Poor physical health	10.4%
No health insurance	11.0%
Visited doctor (checkup)	76.6%
Visited dentist	61.9%
Cholesterol screening	89.9%
Teeth loss	14.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	332	11.1%

Disability	%
Any disability	18.7%
Under 18	7.7%
18–64 years	16.6%
65 and over	44.1%

Health insurance coverage

Type	%
Private insurance	61.2%
Public insurance	44.2%
No insurance	9.5%
Uninsured under 19	12.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,902	91.2%
Spanish	77	2.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	73	1.9%
Other languages	4	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,183	97.8%
Born in same state	4,166	97.4%
Born in different state	3,519	82.3%
Foreign born	17	0.4%
Naturalized citizen	95	2.2%
Not a US citizen	70	73.7%

Ancestry

Ancestry	Count	%
Italian	563	13.2%
Arab	538	12.6%
French	532	12.4%
English	72	1.7%
German	34	0.8%

Ancestry	Count	%
Polish	12	0.3%
Dutch	9	0.2%
Norwegian	7	0.2%
Irish	3	0.1%

Technology access

Metric	% of households
Computer access	35.3%
Internet access	90.6%

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

Frequently asked questions about ZIP code 13803

What city is ZIP code 13803 in?

ZIP code 13803 is primarily assigned to Marathon, New York.

What county is ZIP code 13803 in?

ZIP code 13803 falls within Cortland County, New York.

How educated is the population of ZIP code 13803?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 13803 mostly owner-occupied?

83% of occupied units in ZIP code 13803 are owner-occupied, well above the national average.

What is the poverty rate in ZIP code 13803?

15% of residents in ZIP code 13803 live below the poverty line, above the national average.

Does ZIP code 13803 have a large retiree population?

37% of households in ZIP code 13803 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 13803 in?

ZIP code 13803 observes the EST timezone.