ZIP Code 15642
standardSource:
Irwin · Westmoreland County · Pennsylvania
- Population
- 45,286
- Median income
- $97,706
- Median home value
- $243,800
- Bachelor's or higher
- 42.1%
- Land area
- 114.6 sq mi
395/sq mi
▲ 28% vs US
higher than 79% of US ZIPs
▼ 12% vs US
higher than 56% of US ZIPs
Median age 45
New York
ZIP code 15642 in Irwin, Pennsylvania has a population of 45,286. The median household income is $97,706, which is 28% above the national average. Median home value is $243,800, 12% below the US average. 42.1% of residents hold a bachelor's degree or higher.
ZIP code 15642 is classified by USPS as a standard delivery area and covers roughly 114.6 square miles in Irwin, Westmoreland County, Pennsylvania. The area is home to 45,286 residents, producing a population density of 395 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 15642 against Pennsylvania and the nation.
On the economic side, the median household income for ZIP 15642 sits at $97,706 (25% above the Pennsylvania average), while per-capita income is $49,889. The poverty rate stands at 5.7% and the unemployment rate at 4.5%. On housing, the median home value is $243,800 (7% above the state average) with median rent at $1,008 per month, and 85.2% of occupied units are owner-occupied, a direct signal of whether 15642 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 42.1% of adults hold a bachelor's degree or higher, the median age is 45, and the average commute is 28 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Westmoreland County, so you can benchmark 15642 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 15642
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 15642.
- Construction
Construction
140 establishments
- Health care and social assistance
Health care and social assistance
137 establishments
- Retail trade
Retail trade
118 establishments
- Other services (except public administration)
Other services (except public administration)
110 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
97 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 15642, Irwin, PA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
45,286
Population
114.6
Area (sq mi)
395
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 15642?
45.0
Median Age
49.3%
Male
50.7%
Female
1.8%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$97,706
Median Household Income
+25% vs state
$49,889
Per Capita Income
5.7%
Poverty Rate
4.5%
Unemployment Rate
28.4 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
20,192
Total Housing Units
19,251
Occupied Units
941
Vacant Units
2.39
Avg Household Size
Occupancy Type
$243,800
Median Home Value
+7% vs state
$1,008
Median Rent
1968
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+3.3%
YoY Change (2024)
209
HPI Index (2000 = 100)
+109%
Total Change Since 2000
Home values in ZIP 15642 have increased 3.3% over the past year (2024). Since 2000, this ZIP has seen +109% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.0% | 154 |
| 2021 | +9.3% | 168 |
| 2022 | +14.5% | 193 |
| 2023 | +5.1% | 202 |
| 2024 | +3.3% | 209 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 995 business establishments in ZIP 15642, employing approximately 12,433 people with a combined annual payroll of $581,642,000.
995
Businesses
12,433
Employees
$581.6M
Annual Payroll
17
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 140 | 14.1% |
| Health care and social assistance | 137 | 13.8% |
| Retail trade | 118 | 11.9% |
| Other services (except public administration) | 110 | 11.1% |
| Professional, scientific, and technical services | 97 | 9.8% |
| Accommodation and food services | 79 | 7.9% |
| Administrative and support and waste management and remediation services | 69 | 6.9% |
| Finance and insurance | 60 | 6.0% |
| Manufacturing | 57 | 5.7% |
| Wholesale trade | 37 | 3.7% |
| Real estate and rental and leasing | 36 | 3.6% |
| Arts, entertainment, and recreation | 14 | 1.4% |
| Information | 12 | 1.2% |
| Transportation and warehousing | 10 | 1.0% |
| Educational services | 8 | 0.8% |
| Management of companies and enterprises | 5 | 0.5% |
| Mining, quarrying, and oil and gas extraction | 3 | 0.3% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 15642 vs 15647 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 15647 | Larimer, PA | 314 | 1.8 mi |
| 15678 | Rillton, PA | 476 | 2.2 mi |
| 15692 | Westmoreland City, PA | 941 | 2.4 mi |
| 15691 | Wendel, PA | 70 | 2.4 mi |
| 15615 | Ardara, PA | 387 | 3.3 mi |
| 15637 | Herminie, PA | 1,861 | 3.8 mi |
| 15085 | Trafford, PA | 7,944 | 4.6 mi |
| 15665 | Manor, PA | 1,472 | 3.3 mi |
| 15611 | Adamsburg, PA | 543 | 3.7 mi |
| 15047 | Greenock, PA | 151 | 4.2 mi |
More ZIP Codes in Westmoreland County
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Frequently Asked Questions
What county is ZIP code 15642 in? ▼
What is the population of ZIP code 15642? ▼
What is the median household income in ZIP 15642? ▼
What is the average home value in ZIP 15642? ▼
What is the demographic makeup of ZIP 15642? ▼
How many businesses are in ZIP code 15642? ▼
What are the main industries in ZIP code 15642? ▼
How have home values changed in ZIP code 15642? ▼
What is the education level in ZIP code 15642? ▼
What is the average commute time in ZIP 15642? ▼
What percentage of residents own vs. rent in ZIP 15642? ▼
What is the poverty rate in ZIP code 15642? ▼
ZIP Code Research Guides
Official Data Resources for Irwin, PA
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.