Irwin, PA · standard
ZIP Code 15642
Westmoreland County, Pennsylvania - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 45,286
- 395/sq mi High-density area
- $97,706
- Median income Above-median income area
- $243,800
- Median home value Near-median home value
- 42.1%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Irwin pairs an upper-quartile household income with above-median home values, in a low-density, homeowner-dominated area.
- Top 21%
- household income, US ZIPs
- Top 44%
- home value, US ZIPs
- 395
- people per sq mi
- 85%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 15642 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 15642 (Irwin, PA) rose +3.3% from 2023 to 2024. The all-transactions index moved from 202.4 in 2023 to 209.2 in 2024 (2000 = 100).
ZIP code 15642 is a densely settled ZIP (a standard USPS delivery area) in Irwin, Westmoreland County, Pennsylvania, with 45,286 residents across 114.6 square miles, a density of 395 people per square mile, in the New York time zone.
ZIP 15642 lands in the middle-income range, with a median household income of $97,706 (25% above the average Pennsylvania ZIP), while per-capita income is $49,889. The poverty rate is 5.7%, with unemployment at 4.5%; those measures add context to the income figure. Median home value is $243,800 (7% above the average Pennsylvania ZIP) and median rent is $1,008; 85.2% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 42.1% of adults hold a bachelor's degree or higher, the median age is 45, and the average commute is 28 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Westmoreland County, so 15642 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 15642
Top 5 sectors by establishment count in Irwin, PA
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 + FHFA HPI ACS demographics and median rent, ZBP business establishments, 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; 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 ZIP avg
$49,889
Per Capita Income
5.7%
Poverty Rate
4.5%
Unemployment Rate
28.4 min
Mean Commute Time
How ZIP 15642 ranks nationally
Irwin, PA household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$97,706 Top 21% higher than 79% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
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?
Housing stock: occupied vs vacant
20,192housing units
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 ZIP avg
$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 15642 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 15642
Irwin (15642)
45,286 residents
- 15085 7,944
Trafford (15085)
7,944 residents
- 15637 1,861
Herminie (15637)
1,861 residents
- 15665 1,472
Manor (15665)
1,472 residents
- 15692 941
Westmoreland City (15692)
941 residents
- 15611 543
Adamsburg (15611)
543 residents
- 15678 476
Rillton (15678)
476 residents
- 15615 387
Ardara (15615)
387 residents
- 15647 314
Larimer (15647)
314 residents
What this shows Among its immediate neighbors, ZIP 15642 ranks the most populous - useful context the national average alone can't give.
ZIP 15642 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 15691
Wendel (15691)
$168,289 median income
- 15642
Irwin (15642)
$97,706 median income
- 15615
Ardara (15615)
$88,750 median income
- 15085
Trafford (15085)
$82,456 median income
- 15665
Manor (15665)
$82,375 median income
- 15692
Westmoreland City (15692)
$71,574 median income
- 15637
Herminie (15637)
$70,461 median income
- 15678 $66,389
Rillton (15678)
$66,389 median income
- 15611 $64,125
Adamsburg (15611)
$64,125 median income
What this shows By household income, ZIP 15642 ranks #2 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 15642, both outside PA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (45,286 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Westmoreland County
Related Areas
Frequently Asked Questions
What county is ZIP code 15642 in?
ZIP code 15642 (Irwin) is located in Westmoreland County, Pennsylvania. Westmoreland County contains multiple ZIP codes, see the full list at /counties/westmoreland-pa.
What is the population of ZIP code 15642?
ZIP code 15642 in Irwin, PA has a population of 45,286 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 15642?
The median household income in ZIP 15642 is $97,706, which is 28% above the national average of $76,288.
What is the average home value in ZIP 15642?
The median home value in ZIP 15642 is $243,800, which is 12% below the national average of $278,155.
What is the demographic makeup of ZIP 15642?
The largest racial group in ZIP 15642 is White at 94.2%. Hispanic or Latino residents make up 1.5% of the population.
How many businesses are in ZIP code 15642?
ZIP code 15642 has 995 business establishments employing approximately 12,433 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 15642?
The top industries by establishment count in ZIP 15642 are: Construction (140), Health care and social assistance (137), Retail trade (118). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 15642?
According to the FHFA House Price Index, home values in ZIP 15642 increased by 3.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 109%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 15642?
In ZIP code 15642, 71.6% of residents aged 25+ have a high school diploma or higher, and 42.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 15642?
The mean commute time for workers in ZIP code 15642 is 28.4 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 15642?
In ZIP code 15642, approximately 85.2% of occupied housing units are owner-occupied and 14.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 15642?
The poverty rate in ZIP code 15642 is 5.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 15642's numbers, next.
- See how ZIP 15642 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Irwin, PA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.