🇺🇸 United States ZIP Code

STANDARD

61275

Port Byron

ZIP Code 61275 is a standard zip code serving Port Byron, Port Byron, Illinois (IL), in Rock Island County, United States. It has an estimated population of 4,347 with a median household income of $80,488. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Illinois (IL)
County: Rock Island
City: Port Byron
Timezone: America/Chicago

Coordinates

Latitude: 41.601300
Longitude: -90.326300

Geographic Details

Land Area: 33.58 mi²
Water Area: 1.38 mi²
Population Density: 129.0 people per mi² (55th percentile)
Bounding Box: 41.658332°N, 41.533706°S, -90.228881°E, -90.364670°W

With 4,347 residents spread across 33.58 square miles, this area has a population density of 129.0 people per square mile.

Demographics

4,347

Population

55th percentile

$80,488

Median Income

90th percentile

$170,400

Median Home Value

65th percentile

33.58 mi²

Land Area

The median household income in 61275 is $80,488, and the median home value is $170,400. This places the area in the top 25% nationally for household income.

Housing

1,826

Total Units

1,717

Occupied Units

94.0%

Occupancy Rate

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

60657

Chicago

$75,885

60440

Bolingbrook

$71,422

60611

Chicago

$85,642

61884

White Heath

$85,260

61073

Roscoe

$78,285

60477

Tinley Park

$69,734

60504

Aurora

$71,624

60417

Crete

$70,383

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.