ZIP Code · PA

ZIP 15642

Part of Irwin, PA

Pop. 46,325·Westmoreland County·227th most expensive ZIP in Pennsylvania

Median rent (all units)

$1,223/mo

Year-over-Year

+2.7%

Month-over-Month

+1.1%

vs US Median

-$709

Reported rents

Rising (Monthly)

Be the first to discuss 15642 rents ↓

Most AffordableMost Expensive

ZIP 15642 · $1,223

More affordable than 90% of US ZIP codes · National median $1,932/mo

Rent check

Is your rent fair?

Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$940

1 BR

$1,010

2 BR

$1,220

3 BR

$1,560

4 BR+

$1,680

Research median

$1,220/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

Loading…

Last updated: October 17, 2026

From the history

What the numbers show

Past year vs. the rest of Pennsylvania

Rent in ZIP 15642 changed +2.7% over the year to September 2026. Across the 205 Pennsylvania ZIP codes Zillow tracks, the typical change was +3.8%.

Recent direction

Rent rose in 6 of the last 12 months.

What a typical income covers

30% of the median household income ($97,706) is $2,443 a month. That covers HUD's Fair Market Rent for up to a 4-bedroom ($1,680).

Cheaper nearby

ZIP 15132, 6 miles away, rents for 20% less ($976/mo), about $3,000 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 15642. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$14,676/yr

At $1,223/mo median

Location

CityIrwin

StatePA

CountyWestmoreland County

Rent Market Meter

Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are climbing (2.7% YoY), so leverage tilts toward landlords. Act sooner rather than later.

Based on rent-price momentum (+2.7% YoY, +1.1% MoM), not inventory.

Demographics

Who lives here

ZIP 15642 (Irwin, PA) is majority owner-occupied, has a large retiree population, has a median income above the national average, 42.1% of residents hold a bachelor's degree or higher.

Population

46,325

Median income

$97,706

Median age

Renters

14.8%

Age distribution

21.1%

15.5%

27%

15.6%

20.8%

Under 1821.1%

18–3415.5%

35–5427%

55–6415.6%

65+20.8%

Gender

49.3%

50.7%

Male49.3%

Female50.7%

Race & ethnicity

94.2%

White94.2%

Black0.6%

Hispanic1.5%

Asian0.9%

Other2.8%

Education (25+)

29.5%

25.8%

42.1%

No HS diploma2.6%

HS diploma29.5%

Some college25.8%

Bachelor's+42.1%

Housing tenure

85.2%

14.8%

Owner85.2%

Renter14.8%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 15642 in Irwin, PA has changed in 5 years

Income

$79,322 → $97,706

up 23.2%

Population

46,257 → 46,325

up 0.1%

Renter share

14.7% → 14.8%

+0.1 pts

Bachelor's+

39.2% → 42.1%

+2.9 pts

Census figures show median household income at $97,706 today, compared with $79,322 five years earlier. Educational attainment has shifted as well, with the share of adults holding a bachelor's degree or higher climbed from 39.2% to 42.1%.

Community

Discussions about ZIP 15642

No discussions yet. Start the conversation.

Local insights

Tips for renters in ZIP 15642

About renting in ZIP 15642

Last updated: October 17, 2026

ZIP code 15642 covers Irwin, PA. The median rent here is $1,223/mo as of October 2026. A 1-bedroom rents for a median of $1,010/mo. A 2-bedroom rents for a median of $1,220/mo.

At 15% of local median household income ($97,706/yr), ZIP 15642 ranks as affordable compared to the national benchmark of 30%. Rents have increased 2.7% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 15642?

To keep rent at or below 30% of gross income, you would need to earn at least $49,000/year (about $24/hour full-time) to afford the median rent of $1,223/mo in ZIP 15642. The local median household income is $97,706/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 15642?

Rent in ZIP 15642 has risen 2.7% over the past year.

How does ZIP 15642 compare to other ZIPs in Pennsylvania?

ZIP 15642 is one of the more affordable among Pennsylvania ZIP codes for rent, ranking #227 of 261 at $1,223/mo. Over the year to September 2026, rent in ZIP 15642 changed +2.7%, against a typical +3.8% across the 205 Pennsylvania ZIP codes Zillow tracks.