| City: | Clark Mills, New York |
| County: | Oneida County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:52:13 PM |
| Population: | 1,026 [See All] |
| Area Codes: | 315 / 680 |
| Classification: | PO Box |
| Coordinates: | 43.0948, -75.3753 |
| Land Area: | 0.58 sq mi |
| Quick Link: |
Clark Mills is a hamlet in Oneida County, New York, with 1,026 residents spread across just 0.59 square miles. This is a PO Box Only Zone. There's no street delivery available, despite the community's established street grid and residential character. The Clark Mills post office handles all mail for the area through 511 PO Boxes and two rural carrier routes.
The hamlet's street names tell the story of its industrial past. Mill Street, Railroad Street, Millstream Court, and Waterwheel Circle all point to Clark Mills' heritage as a mill town. The compact community sits along historic transportation corridors that once powered local industry.
With 480 occupied homes and 511 PO Boxes, the post office serves slightly more boxes than local households (adoption rate of 1.065). This modest regional reach suggests the post office also serves some residents from surrounding areas who don't have delivery options.
Clark Mills is a working-class community with a median household income of $58,508 and a median age of 46.4 years. About 419 homes are mobile homes or manufactured housing, making up a significant portion of the housing stock. Notably, 34% of workers work from home, well above typical rates for small New York communities. The median rent is $1,079.
Mail addressed to Clark Mills must use a PO Box. The rural carrier routes (R001 and R002) handle the limited delivery that exists within the PO Box Only Zone framework. General Delivery is available at the post office for those without a permanent box.
Street names preserve the hamlet's identity as a historic mill town along transportation corridors.
ZIP Code 13321 has 1,026 residents and 480 households (average 2.14 persons per household). The median age is 46.4 years, significantly older than the state (39.0) and significantly older than the nation (38.8). The gender split is 41.8% male and 58.2% female, which is much lower than the national male share (49.1%), making this a female-majority area. Largest groups are White (92.3%, much higher than the state average of 55.2% and well above the national average of 61.6%) and Hispanic or Latino (2.1%); Hispanic or Latino residents make up 2.1%, which is much lower than the state average (19.5%).
Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship
| 2020 Population: | 1,026Source: Census DHC |
| 2024 ACS Population Estimate: | 678Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 1,769.0 people per sq mile |
| Average Income: | $68,438Source: Census ACS |
| Households: | 480Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 2.14Source: Census DHC |
| Average Family Size: | 3.77Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 1,122 | 980 | 1,020 | 1,175 | 1,247 | 1,144 | 1,037 | 917 | 819 | 639 | 712 | 803 | 815 | 678 |
| Decennial Census | 1,049 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1,026 | -- | -- | -- | -- |
Median Age: 46.4
Male Median Age: 34.8
Female Median Age: 51.4
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 19 | 45 | 29 | 22 | 18 | 55 | 29 | 22 | 3 | 28 | 21 | 23 | 20 | 29 | 29 | 20 | 3 | 14 |
| Female | 17 | 29 | 21 | 19 | 40 | 40 | 34 | 20 | 35 | 24 | 34 | 36 | 57 | 63 | 71 | 12 | 16 | 29 |
| Total | 36 | 74 | 50 | 41 | 58 | 95 | 63 | 42 | 38 | 52 | 55 | 59 | 77 | 92 | 100 | 32 | 19 | 43 |
| White: | 947 | 95.08% |
| Black: | 10 | 1.00% |
| Hispanic:* | 22 | 2.21% |
| Asian: | 6 | 0.60% |
| American Indian: | 2 | 0.20% |
| Hawaiian: | 0 | 0% |
| Other: | 9 | 0.90% |
| Total: | 996 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 429 | 41.81% | 34.8 years |
| Females: | 597 | 58.19% | 51.4 years |
| Total: | 1,026 | 100% | 46.4 years |
| Native, born in the United States: | 614 | 90.56% |
| Native, born in PR, Island Areas, or abroad: | 18 | 2.65% |
| Foreign born, naturalized U.S. citizen: | 46 | 6.78% |
| Foreign born, not a U.S. citizen: | 0 | 6.78% |
| Total Population: | 678 | 100% |
| Total Native Population: | 632 | 93.22% |
| Total Foreign-born Population: | 46 | 6.78% |
In 2024, the Median household income is $68,438, which is far less than the national median ($80,734), is up $20,547 (42.9%) since 2011 and above its 2019 pre-pandemic level by $18,065. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $0 and female is $45,337, which is far less than the national female median ($55,274), with a current gap of $45,337 that has narrowed from 2011 to 2024. The labor-force participation rate is 63.0%, which is about the same as the national rate (63.5%). The unemployment rate is 2.5%, which is considerably lower than the national rate (5.2%). The largest occupation group is Service (42.7%).
Explore More: Income Over Time Household Income Employment Status By Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $47,891 | $55,022 | $50,841 | $50,536 | $50,168 | $45,536 | $40,694 | $51,083 | $50,373 | $50,617 | $50,798 | $55,234 | $58,508 | $68,438 |
| Median Family Income | $39,732 | $55,403 | $49,327 | $51,656 | $52,031 | $54,929 | $52,500 | $56,622 | $50,694 | $51,573 | $49,688 | $53,914 | $54,073 | $0 |
| Median NonFamily Income | $55,540 | $52,098 | $51,010 | $39,934 | $39,155 | $38,083 | $37,717 | $41,602 | $44,250 | $49,286 | $49,500 | $56,375 | $67,143 | $0 |
| Median Male Income | $52,955 | $50,909 | $51,250 | $51,167 | $0 | $51,680 | $52,869 | $53,800 | $38,977 | $34,458 | $35,250 | $34,922 | $0 | $0 |
| Median Female Income | $48,492 | $50,130 | $37,357 | $36,094 | $0 | $35,714 | $41,806 | $42,279 | $41,471 | $41,188 | $40,871 | $48,333 | $48,393 | $45,337 |
| Employed: | 349 | 60.59% |
| Unemployed: | 9 | 1.56% |
| Not In Labor Force: | 218 | 37.85% |
| Total: | 576 | 100% |
| Management, business, science, and arts: | 83 | 23.78% |
| Service: | 149 | 42.69% |
| Sales and Office: | 81 | 23.21% |
| Natural resources, construction, and maintenance: | 0 | 0.00% |
| Production, transportation, and material moving: | 36 | 10.32% |
| Total Civilian Employed Population: | 349 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $41,900 (100.00%) since 2011 and below its 2019 pre-pandemic level by $85,100. The median gross rent is $1,027, which is well under the national median ($1,413), is up $301 (41.46%) since 2011 and above its 2019 pre-pandemic level by $225. Of occupied housing, owners make up 66.75% (42.65% with a mortgage, 57.35% free-and-clear) and renters 33.25% - making this ZIP Code under national rental averages. The vacancy rate is 15.04%, which is considerably higher than the national rate (10.12%).
Explore More: Compare Home Value Home Value Over Time Rent & Over Time Housing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $41,900 | $65,900 | $62,800 | $48,600 | $44,000 | $52,500 | $56,800 | $82,300 | $85,100 | $85,700 | $86,800 | $0 | $0 | $0 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 62 | 44.60% |
| $1,000 to $1,499: | 77 | 55.40% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 139 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $726 | $773 | $753 | $694 | $695 | $692 | $720 | $736 | $802 | $837 | $942 | $1,052 | $1,079 | $1,027 |
| Owner Occupied (with mortgage): | 119 | 28.47% |
| Owner Occupied (free and clear, no mortgage): | 160 | 38.28% |
| Renter Occupied: | 139 | 33.25% |
| Total Occupied Housing Units: | 418 | 100% |
| Occupied Housing Units: | 418 | 84.96% |
| Vacant Housing Units (not graphed): | 74 | 15.04% |
| Total Housing Units: | 492 | 100% |
| Single-Family Units: | 101 | 20.53% |
| Multi-Family Units: | 82 | 16.67% |
| Other Units: | 309 | 62.80% |
| Total Housing Units: | 492 | 100% |
In 2024, 10.90% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 92.50%, which is comparable to the national rate (89.60%). The uninsured rate is 0.70%, which is far lower than the national rate (8.40%). Public coverage is 60.20%, which is far higher than the national rate (36.70%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.80%), down 15.50 percentage points since 2011 and below its 2019 pre-pandemic level by 17.60 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is elementary (100.00%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More: Educational Attainment Health Insurance Poverty Over Time School Enrollment
| Less than 9th grade: | 15 | 2.60% |
| 9th to 12th grade, no diploma: | 28 | 4.86% |
| High school graduate (includes equivalency): | 184 | 31.94% |
| Some college, no degree: | 98 | 17.01% |
| Associate's degree: | 188 | 32.64% |
| Bachelor's degree: | 39 | 6.77% |
| Graduate or professional degree: | 24 | 4.17% |
| Total: | 576 | 100% |
| High school or higher: | 533 | 92.53% |
| Bachelor's degree or higher: | 63 | 10.94% |
| Private Insurance: | 508 | 55.34% |
| Public Insurance: | 405 | 44.12% |
| No Insurance: | 5 | 0.54% |
| Total: | 918 | 100% |
| Has Health Insurance: | 913 | 99.46% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 15.5% | 4.9% | 11.9% | 14.9% | 21.8% | 23.6% | 27.0% | 14.1% | 17.6% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 105 | 100.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 105 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 105 | 100.00% |
ZIP Code 13321 supports both business and residential activity. According to the Business Census (2024), there are 8 business establishments, employing about 68 people with an annual payroll of $2,504,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 549Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 8Source: CBP |
| 1st Quarter Payroll: | $618,000Source: CBP |
| Annual Payroll: | $2,504,000Source: CBP |
| # of Employees: | 68Source: CBP |
ZIP Code 13321 is located in Oneida County, New York, within the Utica-Rome, NY Metropolitan Statistical Area (CBSA 46540) and New York's 22nd Congressional District. This Metro area has a population of 299,397 people, about 0.34% of whom live in ZIP Code 13321. It covers 0.58 sq mi of land and a water area of 0.014 sq mi.
| CBSA Name: | Utica-Rome, NYSource: Census |
| CBSA Number: | 46540Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 299,397Source: Census |
| MSA: | Utica-Rome, NY MSASource: Census |
| Land Area: | 0.58 sq miSource: Census |
| Water Area: | 0.014 sq miSource: Census |
| Congressional District: | 22Source: USPS |
| Congressional Land Area: | 5077.45 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 3615902Source: Census |
| Place Name: | Clark Mills CDP; New YorkSource: Census |
We could not locate which school district 13321 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.