Irwin Township is a township in Venango County, Pennsylvania, home to about 1,322 people across 30 square miles. It has no ZIP code of its own: it’s part of 16038, 16127, 16342 and 16374.
Homes sold for a median of $181 per square foot across 4 ZIP codes in the three months ending August 2026, and 2 of 4 were seller’s markets.
Mostly Harrisville; part is in Irwin Township
Mostly Grove City; part is in Irwin Township
Mostly Polk Borough; part is in Irwin Township
Mostly Rockland Township (Venango County); part is in Irwin Township
Each card is that ZIP code’s whole market, including any part outside Irwin Township. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Irwin Township’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Pittsburgh International Airport (PIT)54 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA55 miles away |
| Nearest city of 1 million+ | Philadelphia, PA266 miles away |
Straight-line distances from the center of Irwin Township; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Irwin Township had 1,253 residents in the 2020 census, down 4% since 2000.
It’s the 1541st largest of 2,568 towns in Pennsylvania by population.
Venango County grew from 49,648 residents in 1900 to 50,454 in 2020.
Venango County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 18°F. About 46.5 inches of rain and melted snow fall in a typical year, with about 54 inches of snow.
Source: NOAA 1991–2020 climate normals, Franklin, PA weather station (12 miles away).
14,230 jobs at 1,134 businesses in Venango County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
162 doctors and other health care providers list an office in Irwin Township’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 22 |
|---|---|
| Specialist doctors | 27 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 38 |
| Mental health providers | 28 |
| Physical and occupational therapists | 31 |
| Optometrists | 1 |
| Chiropractors | 8 |
| Pharmacies | 7 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Franklin Area SD, Grove City Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Victory El SchHarrisville | Pre-K–5 | 182 | Public | 1.8 mi |
| Hillview El SchGrove City | K–5 | 768 | Public | 9.5 mi |
| Grove City Area MSGrove City | 6–8 | 442 | Public | 9.6 mi |
| Grove City Area HSGrove City | 9–12 | 649 | Public | 9.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Grove City Christian AcademyGrove City | Pre-K–12 | 253 | Christian (no specific denomination) | 9.6 mi |
| Hillside Amish SchoolHarrisville | 1–8 | 35 | Amish | 3.7 mi |
| Meadow View SchoolHarrisville | 1–8 | 16 | Amish | 3.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Grove City, Pine Township (Mercer County), Liberty Township (Mercer County), Harrisville, Rockland Township (Venango County), Mercer Township, Marion Township (Butler County), Wolf Creek, Polk Borough, Clinton Township (Venango County), Frenchcreek, Victory, Mineral, Sandycreek, Springfield Township (Mercer County), Scrubgrass, Cranberry Township, Barkeyville and Sandy Lake Township.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.