ZIP Code 10545 in Maryknoll, NY

Data Last Updated: January 1, 2026
City:Maryknoll, New York
County:Westchester County
Timezone:Eastern (GMT -05:00)
Local Time:11:28:17 PM
Population:160 [See All]
Area Code:914
Classification:PO Box
Coordinates:41.1605, -73.8672
Land Area:0.125 sq mi
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10545 - Maryknoll, NY

ZIP Code 10545, Maryknoll

University Unique ZIP
LocationWestchester County, NY
Area0 sq mi Single Point
Population160
Households4
PO Boxes60 Regional Hub (1500%)
Median Age79.9 years (Senior)
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 10562
Key Facts
  • The post office maintains 60 PO Boxes to serve only 4 local households, indicating it serves as a regional hub for surrounding areas.
  • 84% of the population (135 out of 160 people) lives in group quarters, one of the highest institutional rates in Westchester County.
  • The median age of 79.9 years identifies this as a retirement or religious community rather than a traditional town.
  • With 40 residents per household, the population-to-household ratio reflects communal institutional living.
  • Despite being in suburban Westchester County, mail delivery uses two rural routes rather than city carrier service.
  • The entire ZIP code covers just 0.125 square miles, making it one of the smallest geographic service areas in New York.

Mail Delivery Structure

The mail system here reflects institutional structure. Ryder Road is the only street with carrier routes, serving two delivery records. The Postmaster building handles another two records. But the real story is the 60 PO Boxes maintained at this post office. That's 15 boxes for every local household. This isn't inefficiency. It's a regional hub that serves 59 businesses and surrounding communities without their own post offices.

Population Characteristics

The demographics tell a complete story. Group quarters housing 135 people means this is a retirement home, seminary, or religious community. The median age approaching 80 confirms it. The population-to-household ratio of 40 to 1 is one of the highest in Westchester County. These aren't families. They're residents of an institution that happens to have its own ZIP code.

Geographic Context

Maryknoll sits within the larger 10562 ZIP code zone. It has no independent ZIP boundary. The post office handles rural routes (two distinct ones) rather than city delivery. That's unusual for Westchester County, but it makes sense when the entire service area consists of institutional grounds and scattered addresses on Ryder Road. The 461 employees working here support the institution's operations, serving a population that's chosen communal living over conventional households.

Nearby Communities

The closest neighborhood is West Harrison, less than a mile away. Pleasantville is 2.9 miles north, and Tarrytown sits 3.8 miles to the northwest. These communities likely rely on Maryknoll's post office for PO Box services, explaining why the box count exceeds local demand by such a wide margin.

Street Name Patterns

Institutional Campus Minimal Street Network

The single-street delivery network confirms this is an institutional campus rather than a developed community. Ryder Road provides the only access route, with the Postmaster building serving as the primary mail distribution point.

Nearby Areas

West Harrison Pleasantville Tarrytown Briarcliff Manor Valhalla
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Population & Demographics


ZIP Code 10545 has 160 residents and 4 households (average 6.25 persons per household). The median age is 79.9 years, significantly older than the state (39.0) and significantly older than the nation (38.8). The gender split is 90.6% male and 9.4% female, which is much higher than the state male share (48.4%), making this a male-majority area. Largest groups are White (85.6%, much higher than the state average of 55.2% and well above the national average of 61.6%) and Hispanic or Latino (8.1%); Hispanic or Latino residents make up 8.1%, which is much lower than the state average (19.5%).

Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:160Source: Census DHC
2024 ACS Population Estimate:182Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:1,280.0 people per sq mile
Average Income:$0Source: Census ACS
Households:4Source: Census DHC
Average House Value:$0Source: Census ACS
Persons Per Household:6.25Source: Census DHC
Average Family Size:5.00Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--111114126135129131128129128115149203182
Decennial Census141------------------160------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 79.9

Male Median Age: 81.1

Female Median Age: 53.3

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male0030121031344814221861
Female200013000141021000
Total20302510327541015221861
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:13783.54%
Black:10.61%
Hispanic:*137.93%
Asian:84.88%
American Indian:10.61%
Hawaiian:00%
Other:42.44%
Total:164100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:14590.63%81.1 years
Females:159.38%53.3 years
Total:160100%79.9 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:13775.27%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:4524.73%
Foreign born, not a U.S. citizen:024.73%
Total Population:182100%
Total Native Population:13775.27%
Total Foreign-born Population:4524.73%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $0, which is far less than the state median ($84,578), and above its 2019 pre-pandemic level by $0. 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 $0, which is well under the state female median ($63,701), with a current gap of $0 that has stayed about the same from 2011 to 2023. The labor-force participation rate is 61.0%, which is slightly below the national rate (63.5%). The unemployment rate is 18.0%, which is much higher than the national rate (5.2%). The largest occupation group is Management (80.2%).

Explore More: Income Over Time Household Income Employment Status By Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Family Income$0$0$0$0$0$0$0$0$0$0$0$0$0
Median NonFamily Income$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Male Income$0$0$0$0$35,724$36,250$36,638$38,207$38,317$38,913$20,903$0$0
Median Female Income$0$0$0$0$0$0$0$0$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:9150.00%
Unemployed:2010.99%
Not In Labor Force:7139.01%
Total:182100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:7380.22%
Service:99.89%
Sales and Office:00.00%
Natural resources, construction, and maintenance:00.00%
Production, transportation, and material moving:99.89%
Total Civilian Employed Population:91100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Education, Health & Community


In 2023, 60.10% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.00%). High school or higher is 84.80%, which is comparable to the national rate (89.40%). The uninsured rate is 0.00%, which is comparable to the national rate (8.60%). Public coverage is 65.40%, which is far higher than the national rate (36.30%). Insufficient data for poverty. Among residents ages 3+, the largest enrollment group is college (100.00%). College enrollment is 100.00%, 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

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:52.81%
9th to 12th grade, no diploma:2212.36%
High school graduate (includes equivalency):2916.29%
Some college, no degree:00.00%
Associate's degree:158.43%
Bachelor's degree:95.06%
Graduate or professional degree:9855.06%
Total:178100%
High school or higher:15184.83%
Bachelor's degree or higher:10760.11%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:9945.41%
Public Insurance:11954.59%
No Insurance:00.00%
Total:218100%
Has Health Insurance:218100.00%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%0.0%0.0%0.0%0.0%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

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.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:00.00%
Elementary school (grades 1-8):00.00%
High school (grades 9-12):00.00%
College or graduate school:4100.00%
Total:4100%
Early Childhood:00.00%
K-12 (Primary & Secondary School):00.00%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 10545 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 461 people with an annual payroll of $28,732,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:168Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:4Source: CBP
1st Quarter Payroll:$7,281,000Source: CBP
Annual Payroll:$28,732,000Source: CBP
# of Employees:461Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 10545 is located in Westchester County, New York, within the New York-Newark-Jersey City, NY-NJ Metropolitan Statistical Area (CBSA 35620) and New York's 17th Congressional District. This Metro area has a population of 19,756,722 people, about 0.00% of whom live in ZIP Code 10545, and is subdivided into the New York-Jersey City-White Plains, NY-NJ division. It covers 0.125 sq mi of land and a water area of 0 sq mi.

CBSA Name:New York-Newark-Jersey City, NY-NJSource: Census
CBSA Number:35620Source: Census
CBSA Type:MetroSource: Census
CBSA Division:New York-Jersey City-White Plains, NY-NJ (CBSA Div 35614)Source: Census
CBSA Population:19,756,722Source: Census
MSA:New York-Northern New Jersey-Long Island, NY-NJ-CT-PASource: Census
Land Area:0.125 sq miSource: Census
Water Area:--Source: Census
Congressional District:17Source: USPS
Congressional Land Area:382.63 sq miSource: Census
PMSA:New York, NY PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:--Source: Census
Place Name:--Source: Census

Adjacent & Nearby ZIP Codes


10546 | | 10543

Schools in ZIP Code 10545


We could not locate which school district 10545 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.

Ossining High School 29 S Highland Ave
Ossining, NY 10562
District: Ossining Union Free School DistrictNearby
Park School 22 Edward St
Ossining, NY 10562
District: Ossining Union Free School DistrictNearby
Claremont School 2 Claremont Rd
Ossining, NY 10562
District: Ossining Union Free School DistrictNearby
Anne M Dorner Middle School Van Cortlandt Ave
Ossining, NY 10562
District: Ossining Union Free School DistrictNearby
Roosevelt School 190 Croton Ave
Ossining, NY 10562
District: Ossining Union Free School DistrictNearby
St Augustine School 381 N Highland Ave
Ossining, NY 10562
District: Private SchoolNearby
Clear View School Day Treatment 480 Albany Post Rd
Briarcliff Manor, NY 10510
District: Private SchoolNearby
Holy Name Of Mary Montessori School 114 Grand St
Croton On Hudson, NY 10520
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 10545


Kehilath Yakov Rabbinical Seminary 340 Illington Road
Ossining, NY 10562
Type: Post Secondary
New York Medical College Administration Building
Valhalla, NY 10595
Type: Post Secondary
Rockland County Boces-Practical Nursing Program 65 Parrott Rd, Bldg 3
West Nyack, NY 10994
Type: Post Secondary
Suny Westchester Community College 75 Grasslands Road
Valhalla, NY 10595
Type: Post Secondary
Ohr Hameir Theological Seminary 141 Furnace Woods Rd
Peekskill, NY 10566
Type: Post Secondary
Be'er Yaakov Talmudic Seminary 12 Truman Avenue
Spring Valley, NY 10977
Type: Post Secondary

Sources & References


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 January 1, 2026.

  1. U.S. Postal Service [Last Updated: 1/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 1/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 1/1/2026], https://nces.ed.gov