13321 ZIP Code — Clark Mills, NY

Oneida County, New York

ZIP code 13321 is located in Clark Mills, New York, within Oneida County. It covers approximately 0.58 square miles and serves a population of 803 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 315.

About ZIP code 13321

The housing stock consists of a higher-than-average concentration of mobile homes. Much of the housing stock is relatively new, reflecting recent development activity. Owner-occupancy sits near the national average at 61%.

Median household income is $55,234. The poverty rate of 4% is below the national average. 53% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%; and disability rates above the national average at 25%.

Overall, ZIP code 13321 reflects a community defined by a strong veteran community and a significant Social Security-dependent population.

803
population
0.58
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
13321 ZIP code map
Cities in ZIP code 13321

Below are the cities the US Postal Service accepts for ZIP code 13321. Using any city not on this list may result in mail delivery delays.

City Status
Clark Mills Acceptable
Demographics updated 05/2026
Population
Total population 803
Population density 1,384 / sq mi
State FIPS 36
County FIPS 065
Geography
Land area 0.58 sq mi
Water area 0.01 sq mi
Latitude 43.0948
Longitude -75.3753
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 45.1% 42.4% 37.0%
$50k – $100k 52.9% 32.6% 27.0%
$100k – $200k 2.0% 20.9% 24.4%
Over $200k 0.0% 4.2% 11.5%

Demographics & statistics

803
Population
1,384
People per sq mi
52.0
Median age
$55,234
Median household income
$38,147
Per capita income
$0
Median home value
$1,052
Median monthly rent
60.5%
Home ownership
4.0%
Poverty rate
3.1%
Unemployment
334
Housing units
21.5%
Bachelor's or higher

Age distribution

Male Female
23
5–9
37
39
10–14
64
8
20–24
14
47
25–34
75
42
45–54
67
11
55–59
18
42
60–64
69
40
65–74
64
51
75–84
83
3
85+
6
← Male
Female →

Age summary

GroupCount%
Under 1816320.3%
18 and over64079.7%
65 and over24730.8%
Median age52.0 years

Race & ethnicity

White 98.3%
Asian 1.7%
GroupCount%
White78998.3%
Asian141.7%

Household income

Income range This ZIP County avg State avg
Under $50k 45.1% 42.4% 37.0%
$50k – $100k 52.9% 32.6% 27.0%
$100k – $200k 2.0% 20.9% 24.4%
Over $200k 0.0% 4.2% 11.5%
$25k–$35k 3.7%
$35k–$50k 22.3%
$50k–$75k 53.5%
$100k–$150k 20.5%
Range% of households
$25k–$35k3.7%
$35k–$50k22.3%
$50k–$75k53.5%
$100k–$150k20.5%
Median income$55,234

Housing

Home values

Under $50k 48.4%
$50k–$100k 24.9%
$100k–$150k 4.0%
$150k–$200k 3.2%
$200k–$300k 3.6%
$300k–$500k 15.9%

Housing overview

MetricValue
Median home value$0
Median rent / month$1,052
Owner occupied60.5%
Renter occupied39.5%
Vacant11.1%
Single-family detached20.2%
Large apartment buildings2.7%
Mobile homes54.0%
Median rooms4.4
Avg household size (owned)2.07

Year built

Era%
2020 or later0.0%
2010–201922.1%
2000–200910.1%
1990–199915.3%
1980–198911.3%
1970–19796.6%
1960–19693.9%
1950–19598.2%
1940–19493.1%
1939 or earlier19.4%

Bedrooms

Size% of units
No bedroom (studio)6.6%
1 bedroom2.7%
2 bedrooms61.0%
3 bedrooms25.8%
4 bedrooms3.9%
5+ bedrooms0.0%

Vehicles per household

Vehicles% of households
No vehicle7.0%
1 vehicle56.8%
2 vehicles36.2%
3 or more0.0%

Heating fuel

Fuel type%
Utility gas70.3%
Electricity24.9%
Fuel oil4.8%

Households & families

Household typeCount%
Married-couple family8518.6%
Cohabiting couple388.3%
Male householder, no spouse8719.0%
Female householder, no spouse24854.1%
Households with children under 185612.2%
Households with seniors (65+)18440.2%
Average household size1.75

Marital status

StatusMaleFemale
Never married37.1%31.1%
Married35.5%25.3%
Separated0.0%0.0%
Widowed0.0%13.7%
Divorced27.3%29.9%

Education

Less than 9th grade 3.6%
Some HS, no diploma 1.5%
HS graduate 32.2%
Some college, no degree 5.0%
Associate's degree 36.2%
Bachelor's degree 17.3%
Graduate / professional 4.2%
Metric%
HS diploma or higher95.0%
Bachelor's or higher21.5%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool00.0%
Kindergarten00.0%
Elementary school175100.0%
High school00.0%
College / grad school00.0%

Employment

Industry of employment

Education & healthcare 43.3%
Finance & real estate 23.7%
Wholesale trade 10.9%
Retail trade 9.9%
Professional & management 9.6%
Arts, food & hospitality 2.6%

Occupation

Category%
Management, business & arts19.6%
Service34.6%
Sales & office25.0%
Natural resources & construction2.9%
Production & transportation17.9%

Employment type

Type%
Private sector88.5%
Government5.1%
Self-employed6.4%
Unpaid family workers0.0%

Commute

Method%
Drive alone78.4%
Carpool12.5%
Public transit0.0%
Walk0.0%
Work from home9.2%
Other means0.0%
Avg commute (minutes)25.6

Poverty

All people 4.0%
Under 18 years 0.0%
18 and over 4.8%
Married-couple families 0.0%
Female-led households 0.0%

Income support

Source% of households
Social Security52.6%
Retirement income48.3%
Supplemental Security18.3%
Cash public assistance2.4%
Food stamps / SNAP8.7%

Health indicators

Condition%
Obesity29.9%
High blood pressure30.9%
High cholesterol34.6%
Diabetes8.6%
Heart disease6.2%
Stroke2.8%
Asthma10.3%
Arthritis25.3%
Kidney disease2.9%
Pulmonary disease6.7%
Cancer7.6%
Behavior / access%
Smoking15.1%
Binge drinking17.9%
No physical activity22.4%
Less than 7 hrs sleep32.8%
Depression19.7%
Fair or poor health11.2%
Poor mental health13.7%
Poor physical health9.5%
No health insurance8.8%
Visited doctor (checkup)78.5%
Visited dentist68.3%
Cholesterol screening91.8%
Teeth loss11.4%

Veterans & disability

VeteransCount%
Civilian veterans9916.1%
Disability%
Any disability25.2%
Under 1816.0%
18–64 years12.2%
65 and over50.6%

Health insurance coverage

Type%
Private insurance65.0%
Public insurance70.9%
No insurance0.6%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only803100.0%
Spanish141.7%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages141.7%

Place of birth & citizenship

OriginCount%
Native born (US)78998.3%
Born in same state74192.3%
Born in different state58572.9%
Foreign born486.0%
Naturalized citizen141.7%
Not a US citizen14100.0%

Ancestry

AncestryCount%
Italian20725.8%
French14918.6%
AncestryCount%
Arab8210.2%
German232.9%

Technology access

Metric% of households
Computer access57.0%
Internet access90.6%

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

Frequently asked questions about ZIP code 13321

What city is ZIP code 13321 in?

ZIP code 13321 is primarily assigned to Clark Mills, New York.

What county is ZIP code 13321 in?

ZIP code 13321 falls within Oneida County, New York.

Does ZIP code 13321 have an older population?

31% of residents in ZIP code 13321 are 65 or older, above the national average of ~17%.

Does ZIP code 13321 have a large retiree population?

53% of households in ZIP code 13321 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 13321 have a large veteran population?

16% of civilians in ZIP code 13321 are veterans, above the national average of ~7%.

What is the population of ZIP code 13321?

ZIP code 13321 has an estimated population of 803 residents, with a density of 1,384 people per square mile.

What timezone is ZIP code 13321 in?

ZIP code 13321 observes the EST timezone.

Need the complete ZIP code database? Download all 42,000+ US ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.
Download database →