PlainZIP

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
$97,706
Median income
$243,800
Median home value
42.1%
Bachelor's or higher

The verdict

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.

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 Pennsylvania average), while per-capita income is $49,889. Local economic indicators show a 5.7% poverty rate alongside 4.5% unemployment. 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 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. To put 15642 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Westmoreland County, for a geography-aware comparison.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 15642?

45.0

Median Age

49.3%

Male

50.7%

Female

1.8%

Foreign-Born

White 94.2%
African American 0.6%
Asian 0.9%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.0%
Hispanic or Latino 1.5%

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

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

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

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?

High School Graduate or Higher 71.6%
Bachelor's Degree or Higher 42.1%

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

Owner 85.2%
Renter 14.8%

$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 15642 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 15642 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 15642 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

15601 standard
Greensburg, PA
Pop: 59,483
15068 standard
New Kensington, PA
Pop: 38,785
15650 standard
Latrobe, PA
Pop: 28,432
15644 standard
Jeannette, PA
Pop: 18,836
15666 standard
Mount Pleasant, PA
Pop: 16,461
15012 standard
Belle Vernon, PA
Pop: 15,905

Related Areas

Westmoreland County Irwin, PA Pennsylvania

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.

Read our methodology to see how this data is sourced, computed, and verified.