🇺🇸 United States ZIP Code

STANDARD

61201

Rock Island

ZIP Code 61201 is a standard zip code serving Rock Island, Rock Island, Illinois (IL), in Rock Island County, United States. It has an estimated population of 39,116 with a median household income of $41,547. 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: Rock Island
Timezone: America/Chicago

Coordinates

Latitude: 41.491300
Longitude: -90.564800

Geographic Details

Land Area: 18.05 mi²
Water Area: 2.00 mi²
Population Density: 2167.0 people per mi² (85th percentile)
Bounding Box: 41.526133°N, 41.415008°S, -90.503633°E, -90.644029°W

With 39,116 residents spread across 18.05 square miles, this area has a population density of 2167.0 people per square mile.

Demographics

39,116

Population

90th percentile

$41,547

Median Income

30th percentile

$98,800

Median Home Value

30th percentile

18.05 mi²

Land Area

The median household income in 61201 is $41,547, and the median home value is $98,800.

Housing

17,464

Total Units

15,966

Occupied Units

91.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Rock Island, IL.

61204

Rock Island

61299

Rock Island

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

60639

Chicago

$38,707

62016

Carrollton

$46,648

61310

Amboy

$44,962

62846

Ina

$39,038

62024

East Alton

$43,592

61322

Depue

$38,833

61087

Warren

$45,809

62017

Coffeen

$39,762

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.