Port Byron is a village in Rock Island County, Illinois, home to about 1,854 people across 2.4 square miles. Its ZIP code is 61275.
Homes sold for a median of $196 per square foot in the three months ending August 2026, a seller’s market.
Mostly Port Byron; also East Moline
Each card is that ZIP code’s whole market, including any part outside Port Byron. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Port Byron’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Chicago O'Hare International Airport (ORD)127 miles away |
|---|---|
| Closer regional airport | Quad City International Airport (MLI)14 miles away |
| Nearest city of 250,000+ | Madison, WI112 miles away |
| Nearest city of 1 million+ | Chicago, IL137 miles away |
Straight-line distances from the center of Port Byron; 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.
Port Byron had 1,668 residents in the 2020 census, up 9% since 2000.
It’s the 529th largest of 1,450 towns in Illinois by population.
Rock Island County grew from 55,249 residents in 1900 to 144,672 in 2020.
Rock Island County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 14°F. About 37.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Le Claire L&D 14, IA weather station (4 miles away).
64,307 jobs at 2,992 businesses in Rock Island County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
7 doctors and other health care providers list an office in Port Byron.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Dentists | 2 |
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 1 |
| Chiropractors | 2 |
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.
Parks (4 nearby)
Grocery stores
Libraries (2 nearby)
Museums (1 nearby)
Counts are within about 1.5 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 Riverdale CUSD 100. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Riverdale Elem SchoolPort Byron | Pre-K–5 | 517 | Public | 3.1 mi |
| Riverdale Middle SchoolPort Byron | 6–8 | 254 | Public | 3.3 mi |
| Riverdale Sr High SchoolPort Byron | 9–12 | 324 | Public | 3.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with East Moline.
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.