| City: | Chalk Hill, Pennsylvania |
| County: | Fayette County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 9:09:07 PM |
| Population: | 136 [See All] |
| Area Codes: | 412 / 724 |
| Classification: | PO Box |
| Coordinates: | 39.8442, -79.6168 |
| Land Area: | 0.268 sq mi |
| Quick Link: |
Chalk Hill sits in Pennsylvania's Laurel Highlands, a small retirement-oriented community in Fayette County. With just 136 residents spread across 79 households, the population skews older. The median age is 56.3 years, and the average household has only 1.7 people. Most residents are homeowners (87%) in a close-knit community where nearly everyone has deep local roots.
This is a PO Box Only Zone. There's no alternative mail delivery option, meaning every resident and business relies on the Chalk Hill post office. The facility maintains 224 PO Boxes for a population of just 136, giving it an adoption rate of 2.8 boxes per household. That ratio makes clear this post office serves far more than the immediate area. People from surrounding rural communities in the Laurel Highlands drive here to collect their mail.
Chalk Hill isn't a typical rural community when it comes to economics. Median household income sits at $250,000, and per capita income reaches $139,582. These figures rank among the highest in southwestern Pennsylvania. Education levels match the affluence: 71.4% of adults hold bachelor's degrees or higher. The community attracts professionals and retirees who value the scenic mountain setting while maintaining access to Pittsburgh (about 60 miles northwest) and Morgantown, West Virginia (about 12 miles southeast).
Street names tell the story of this region. National Pike follows the historic route that connected the East Coast to the Ohio Valley. Fayette Springs Road and Chalk Hill Ohiopyle Road connect to the outdoor recreation hub at Ohiopyle State Park, known for whitewater rafting on the Youghiogheny River. Trail-named streets like Lafayette Trail and William Penn Trail suggest residential developments carved from the forested hillsides. This isn't a place for urban conveniences. It's a place for quiet living in the mountains, where the post office serves as the community's connection to the outside world.
Street names reference the historic National Pike, connect to Ohiopyle State Park, and suggest planned residential developments in the forested hillsides.
ZIP Code 15421 has 136 residents and 79 households (average 1.72 persons per household). The median age is 56.3 years, significantly older than the state (41.0) and significantly older than the nation (38.8). The gender split is 58.8% male and 41.2% female, which is much higher than the state male share (48.9%), making this a male-majority area. Largest groups are White (98.5%, much higher than the state average of 75.0% and well above the national average of 61.6%) and Black or African American (0.0%, much lower than the state average of 10.9% and well below the national average of 12.4%); Hispanic or Latino residents make up 0.0%, which is much lower than the national average (18.7%).
Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship
| 2020 Population: | 136Source: Census DHC |
| 2024 ACS Population Estimate: | 207Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 507.5 people per sq mile |
| Average Income: | $250,001Source: Census ACS |
| Households: | 79Source: Census DHC |
| Average House Value: | $222,500Source: Census ACS |
| Persons Per Household: | 1.72Source: Census DHC |
| Average Family Size: | 2.39Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 121 | 132 | 187 | 102 | 25 | 23 | 62 | 39 | 48 | 39 | 78 | 96 | 84 | 207 |
| Decennial Census | 112 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 136 | -- | -- | -- | -- |
Median Age: 56.3
Male Median Age: 55.3
Female Median Age: 61
| 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 | 6 | 0 | 0 | 5 | 4 | 3 | 9 | 0 | 7 | 0 | 5 | 8 | 3 | 3 | 6 | 4 | 6 | 11 |
| Female | 3 | 3 | 1 | 0 | 4 | 2 | 1 | 4 | 4 | 1 | 1 | 4 | 6 | 3 | 5 | 5 | 3 | 6 |
| Total | 9 | 3 | 1 | 5 | 8 | 5 | 10 | 4 | 11 | 1 | 6 | 12 | 9 | 6 | 11 | 9 | 9 | 17 |
| White: | 134 | 100.00% |
| Black: | 0 | 0% |
| Hispanic:* | 0 | 0% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 134 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 80 | 58.82% | 55.3 years |
| Females: | 56 | 41.18% | 61.0 years |
| Total: | 136 | 100% | 56.3 years |
| Native, born in the United States: | 207 | 100.00% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 207 | 100% |
| Total Native Population: | 207 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $250,001, which is much higher than the national median ($80,734), and above its 2019 pre-pandemic level by $250,001. Family households earn a median of $122,212 versus $0 for nonfamily households (a difference of $122,212). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has stayed about the same from 2011 to 2024. The labor-force participation rate is 45.2%, which is far less than the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Management (70.0%).
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 | $0 | $0 | $63,558 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $118,676 | $0 | $250,001 | $250,001 |
| Median Family Income | $0 | $0 | $63,558 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $122,212 |
| Median NonFamily Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $250,001 | $0 | $0 |
| Median Male Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Female Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Employed: | 80 | 45.20% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 97 | 54.80% |
| Total: | 177 | 100% |
| Management, business, science, and arts: | 56 | 70.00% |
| Service: | 11 | 13.75% |
| Sales and Office: | 13 | 16.25% |
| Natural resources, construction, and maintenance: | 0 | 0.00% |
| Production, transportation, and material moving: | 0 | 0.00% |
| Total Civilian Employed Population: | 80 | 100% |
In 2024, the median home value is $222,500, which is much lower than the national median ($332,700), is up $39,200 (21.39%) since 2011 and above its 2019 pre-pandemic level by $222,500. The median gross rent is $0, which is well under the national median ($1,413), and above its 2019 pre-pandemic level by $0. Of occupied housing, owners make up 100.00% (0.00% with a mortgage, 100.00% free-and-clear) and renters 0.00% - making this ZIP Code under national rental averages. The vacancy rate is 48.70%, which is far 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 | $183,300 | $183,300 | $184,100 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $275,000 | $223,100 | $229,900 | $222,500 |
| Less than $500: | 0 | 0% |
| $500 to $999: | 0 | 0% |
| $1,000 to $1,499: | 0 | 0% |
| $1,500 to $1,999: | 0 | 0% |
| $2,000 to $2,499: | 0 | 0% |
| $2,500 to $2,999: | 0 | 0% |
| $3,000 or more: | 0 | 0% |
| No Rent: | 0 | 0% |
| Total: | 0 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 0 | 0.00% |
| Owner Occupied (free and clear, no mortgage): | 79 | 100.00% |
| Renter Occupied: | 0 | 0.00% |
| Total Occupied Housing Units: | 79 | 100% |
| Occupied Housing Units: | 79 | 51.30% |
| Vacant Housing Units (not graphed): | 75 | 48.70% |
| Total Housing Units: | 154 | 100% |
| Single-Family Units: | 154 | 100.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 154 | 100% |
In 2024, 80.00% of adults (25+) have a bachelor's degree or higher, which is far higher than the national rate (35.70%). High school or higher is 100.00%, which is comparable to the national rate (89.60%). The uninsured rate is 28.50%, which is far higher than the national rate (8.40%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.80%). Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is elementary (40.54%). College enrollment is 24.32%, 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: | 0 | 0.00% |
| 9th to 12th grade, no diploma: | 0 | 0.00% |
| High school graduate (includes equivalency): | 31 | 20.00% |
| Some college, no degree: | 0 | 0.00% |
| Associate's degree: | 0 | 0.00% |
| Bachelor's degree: | 117 | 75.48% |
| Graduate or professional degree: | 7 | 4.52% |
| Total: | 155 | 100% |
| High school or higher: | 155 | 100.00% |
| Bachelor's degree or higher: | 124 | 80.00% |
| Private Insurance: | 148 | 59.44% |
| Public Insurance: | 42 | 16.87% |
| No Insurance: | 59 | 23.69% |
| Total: | 249 | 100% |
| Has Health Insurance: | 190 | 76.31% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 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): | 15 | 40.54% |
| High school (grades 9-12): | 13 | 35.14% |
| College or graduate school: | 9 | 24.32% |
| Total: | 37 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 28 | 75.68% |
ZIP Code 15421 supports both business and residential activity. According to the Business Census (2024), there are 17 business establishments, employing about 145 people with an annual payroll of $6,034,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 252Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 17Source: CBP |
| 1st Quarter Payroll: | $1,499,000Source: CBP |
| Annual Payroll: | $6,034,000Source: CBP |
| # of Employees: | 145Source: CBP |
ZIP Code 15421 is located in Fayette 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 0.01% of whom live in ZIP Code 15421. It covers 0.268 sq mi of land and a water area of 0 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: | 0.268 sq miSource: Census |
| Water Area: | --Source: 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: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 15421 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.