ZIP Code 15331 in Ellsworth, PA

Data Last Updated: March 1, 2026
City:Ellsworth, Pennsylvania
County:Washington County
Timezone:Eastern (GMT -05:00)
Local Time:9:08:20 PM
Population:1,003 [See All]
Area Codes:724 / 878
Classification:PO Box
Coordinates:40.1074, -80.0216
Land Area:0.775 sq mi
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15331 Ellsworth, PA - A Small Pennsylvania Town

ZIP Code 15331, Ellsworth

Small Town
LocationWashington County, PA
Area0.2 sq mi
Population1,003
Households428
PO Boxes478 (112% adoption)
Median Age44.3 years
ZIP CreatedBefore Oct 2004
Key Facts
  • This is a PO Box Only Zone. There's no street delivery anywhere in the area, making the post office the only way to receive mail.
  • The post office maintains 478 PO Boxes for 428 households, serving not just the local community but surrounding areas without carrier delivery.
  • 77% of homes were built before 1939, making Ellsworth one of Pennsylvania's oldest housing stocks.
  • Transportation and warehousing employ 318 workers, an unusually high concentration suggesting this is a bedroom community for regional logistics operations.
  • 30% of workers work from home, well above the national average of 13%.
  • Nearly every street is named for a tree (Pine, Oak, Maple, Elm, Cedar, etc.), giving the town a nature-themed naming pattern.

Community Overview

Ellsworth sits in southwestern Pennsylvania's Washington County, a compact community of 1,003 residents living within less than two-tenths of a square mile. This is a PO Box Only Zone. No street delivery exists anywhere in the area, making the post office the only way to receive mail.

Postal Services

The Ellsworth post office maintains 478 PO Boxes for the town's 428 households. With an adoption rate of 1.12, the post office serves not just local residents but surrounding areas without carrier delivery. The limited rural route service (one route) and single city route confirm that PO Boxes are the primary mail access method for this region.

Local Character

This is a working-class town with deep roots. 77% of the housing stock was built before 1939, making Ellsworth one of Pennsylvania's older communities. Median home values of $93,500 and household incomes around $59,188 point to an affordable, established community. The median age is 44.3 years.

Street names tell a simple story. Nearly every road is named for a tree: Pine, Oak, Maple, Elm, Cedar, Poplar, Birch, Cherry, Walnut. Nature-themed names like Ash Street, Hickory Street, and Magnolia Street give the town a quiet, rural character despite its small footprint.

Employment Patterns

Employment patterns stand out. Of working residents, 318 are in transportation, warehousing, and utilities. That's a high concentration for a town this size, suggesting Ellsworth functions as a bedroom community for regional logistics centers or trucking operations. Another 30% work from home, higher than the national average.

Mailing Information

All mail to Ellsworth addresses must use a PO Box. Format addresses as:

PO Box [number]
Ellsworth, PA 15331

Street Name Patterns

Nature Names

Streets overwhelmingly follow a tree-naming pattern: Ash, Birch, Cedar, Cherry, Elm, Fir, Hemlock, Hickory, Juniper, Linden, Locust, Magnolia, Maple, Oak, Pear, Pine, Poplar, Redwood, Spruce, Sycamore, Walnut. This consistent theme gives the town a distinctive natural character.

Nearby Areas

Clairton Pleasant Hills West Mifflin Glassport McKeesport - White Oak
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Population & Demographics


ZIP Code 15331 has 1,003 residents and 428 households (average 2.32 persons per household). The median age is 44.3 years, older than the state (41.0) and older than the nation (38.8). The gender split is 49.7% male and 50.3% female, which is about the same as the state male share (48.9%). Largest groups are White (90.2%, much higher than the state average of 75.0% and well above the national average of 61.6%) and Black or African American (3.4%, much lower than the state average of 10.9% and well below the national average of 12.4%); Hispanic or Latino residents make up 0.6%, which is much lower than the national average (18.7%).

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:1,003Source: Census DHC
2024 ACS Population Estimate:891Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:1,294.2 people per sq mile
Average Income:$58,750Source: Census ACS
Households:428Source: Census DHC
Average House Value:$74,300Source: Census ACS
Persons Per Household:2.32Source: Census DHC
Average Family Size:3.16Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--1,0601,016931816772726707637808753699721824891
Decennial Census1,090------------------1,003--------
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: 44.3

Male Median Age: 42.5

Female Median Age: 46.7

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male23333829372722243344213339243319118
Female93233252433291937312530434240221417
Total326571546160514370754663826673412525
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:90594.17%
Black:343.54%
Hispanic:*60.62%
Asian:00%
American Indian:30.31%
Hawaiian:20.21%
Other:111.14%
Total:961100%
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:49849.65%42.5 years
Females:50550.35%46.7 years
Total:1,003100%44.3 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:87898.54%
Native, born in PR, Island Areas, or abroad:131.46%
Foreign born, naturalized U.S. citizen:00.00%
Foreign born, not a U.S. citizen:00.00%
Total Population:891100%
Total Native Population:891100.00%
Total Foreign-born Population:00.00%
Source: U.S. Census 2020-2024 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 2024, the Median household income is $58,750, which is far less than the national median ($80,734), is up $24,792 (73.0%) since 2011 and above its 2019 pre-pandemic level by $19,625. Family households earn a median of $69,712 versus $0 for nonfamily households (a difference of $69,712). By gender, male median income is $0 and female is $55,250, which is closely matches the national female median ($55,274), with a current gap of $55,250 that has narrowed from 2011 to 2024. The labor-force participation rate is 62.4%, which is trails slightly the national rate (63.5%). The unemployment rate is 8.5%, which is markedly higher than the national rate (5.2%). The largest occupation group is Management (35.5%).

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

Source: U.S. Census 2011-2024 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 Type20112012201320142015201620172018201920202021202220232024
Median Household Income$33,958$34,167$35,417$33,654$47,708$50,956$32,400$41,111$39,125$42,375$42,566$47,298$59,188$58,750
Median Family Income$46,563$48,869$54,934$53,500$57,841$56,667$57,083$49,667$41,429$50,724$40,972$47,065$58,269$69,712
Median NonFamily Income$12,596$12,863$12,065$12,300$15,000$30,089$30,469$30,833$31,250$33,750$33,929$37,361$57,031$0
Median Male Income$41,667$41,875$48,125$47,273$50,865$52,813$41,406$37,115$38,750$37,404$39,327$0$0$0
Median Female Income$31,071$32,202$32,358$37,679$42,778$39,219$41,094$45,938$40,313$52,321$63,036$55,156$52,083$55,250
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:40057.14%
Unemployed:375.29%
Not In Labor Force:26337.57%
Total:700100%
Source: U.S. Census 2020-2024 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:14235.50%
Service:7518.75%
Sales and Office:7218.00%
Natural resources, construction, and maintenance:389.50%
Production, transportation, and material moving:7318.25%
Total Civilian Employed Population:400100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2024, the median home value is $74,300, which is considerably lower than the national median ($332,700), is down $5,500 (6.89%) since 2011 and above its 2019 pre-pandemic level by $16,300. The median gross rent is $913, which is far less than the national median ($1,413), is up $293 (47.26%) since 2011 and below its 2019 pre-pandemic level by $30. Of occupied housing, owners make up 73.42% (48.13% with a mortgage, 51.87% free-and-clear) and renters 26.58% - making this ZIP Code under national rental averages. The vacancy rate is 9.20%, which is much lower than the national rate (10.12%).

Explore More: Compare Home Value Home Value Over Time Rent & Over Time Housing Occupancy

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Home Value$79,800$79,400$76,200$75,300$79,200$70,200$66,300$53,900$58,000$66,900$75,900$90,800$93,500$74,300
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:2424.74%
$500 to $999:2626.80%
$1,000 to $1,499:1212.37%
$1,500 to $1,999:1717.53%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:1818.56%
Total:97100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Rent$620$572$273$558$636$789$829$915$943$930$938$938$1,039$913
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):12935.34%
Owner Occupied (free and clear, no mortgage):13938.08%
Renter Occupied:9726.58%
Total Occupied Housing Units:365100%

Occupied Housing Units:36590.80%
Vacant Housing Units (not graphed):379.20%
Total Housing Units:402100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:31478.11%
Multi-Family Units:389.45%
Other Units:5012.44%
Total Housing Units:402100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2024, 21.60% 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 88.90%, which is comparable to the national rate (89.60%). The uninsured rate is 10.50%, which is comparable to the national rate (8.40%). The share of people in poverty is 3.90%, which is comparable to the national rate (8.80%), up 5.10 percentage points since 2011 and below its 2019 pre-pandemic level by 3.10 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is high school (40.55%). College enrollment is 4.72%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.

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:91.52%
9th to 12th grade, no diploma:579.61%
High school graduate (includes equivalency):25543.00%
Some college, no degree:437.25%
Associate's degree:10117.03%
Bachelor's degree:9115.35%
Graduate or professional degree:376.24%
Total:593100%
High school or higher:52788.87%
Bachelor's degree or higher:12821.59%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

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


Private Insurance:57658.48%
Public Insurance:31531.98%
No Insurance:949.54%
Total:985100%
Has Health Insurance:89190.46%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

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


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty3.0%5.9%3.0%7.4%11.9%12.9%10.5%11.1%11.2%4.4%8.6%8.0%8.1%3.9%
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:114.33%
Kindergarten:3112.20%
Elementary school (grades 1-8):9738.19%
High school (grades 9-12):10340.55%
College or graduate school:124.72%
Total:254100%
Early Childhood:4216.54%
K-12 (Primary & Secondary School):23190.94%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 15331 supports both business and residential activity. According to the Business Census (2024), there are 7 business establishments, employing about 10 people with an annual payroll of $307,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:927Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:7Source: CBP
1st Quarter Payroll:$67,000Source: CBP
Annual Payroll:$307,000Source: CBP
# of Employees:10Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 15331 is located in Washington County, Pennsylvania, within the Pittsburgh, PA Metropolitan Statistical Area (CBSA 38300) and Pennsylvania's 14th Congressional District. This Metro area has a population of 2,356,285 people, about 0.04% of whom live in ZIP Code 15331. It covers 0.775 sq mi of land and a water area of 0.017 sq mi.

CBSA Name:Pittsburgh, PASource: Census
CBSA Number:38300Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:2,356,285Source: Census
MSA:Pittsburgh, PA MSASource: Census
Land Area:0.775 sq miSource: Census
Water Area:0.017 sq miSource: Census
Congressional District:14Source: USPS
Congressional Land Area:209.29 sq miSource: Census
PMSA:--Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:4223296Source: Census
Place Name:Ellsworth borough; PennsylvaniaSource: Census

Adjacent & Nearby ZIP Codes


15332 | | 15330

Schools in ZIP Code 15331


We could not locate which school district 15331 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.

Bentworth El Ctr 100 Bearcat Dr
Bentleyville, PA 15314
District: Bentworth School DistrictNearby
Bentworth Shs 75 Bearcat Dr
Bentleyville, PA 15314
District: Bentworth School DistrictNearby
Bentworth Ms 563 Lincoln Avenue
Bentleyville, PA 15314
District: Bentworth School DistrictNearby
Bethlehem-Center El Sch 194 Crawford Rd
Fredericktown, PA 15333
District: Bethlehem-Center School DistrictNearby
Bethlehem-Center Ms 136 Crawford Rd
Fredericktown, PA 15333
District: Bethlehem-Center School DistrictNearby
Grace Christian Education Center 420 California Dr
Coal Center, PA 15423
District: Private SchoolNearby
Srces-Madonna Catholic Regional School 731 Chess St
Monongahela, PA 15063
District: Private SchoolNearby
St Sebastian Regional Catholic School 815 Broad Ave
Belle Vernon, PA 15012
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 15331


Pennsylvania Western University 250 University Avenue
California, PA 15419
Type: Post Secondary
Douglas Education Center 130 7th St
Monessen, PA 15062
Type: Post Secondary
Washington & Jefferson College 60 S Lincoln St
Washington, PA 15301
Type: Post Secondary
Penn Commercial Business/Technical School 242 Oak Spring Road
Washington, PA 15301-6822
Type: Post Secondary
Washington Health System School Of Nursing 155 Wilson Ave
Washington, PA 15301
Type: Post Secondary
Western Area Career & Technology Center 688 Western Avenue
Canonsburg, PA 15317
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 March 1, 2026.

  1. U.S. Postal Service [Last Updated: 3/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 3/1/2026], 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: 3/1/2026], https://nces.ed.gov