🇺🇸 United States ZIP Code

STANDARD

61285

Thomson

ZIP Code 61285 is a standard zip code serving Thomson, Thomson, Illinois (IL), in Carroll County, United States. It has an estimated population of 1,631 with a median household income of $45,109. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Illinois (IL)
County: Carroll
City: Thomson
Timezone: America/Chicago

Coordinates

Latitude: 41.981600
Longitude: -90.084400

Geographic Details

Land Area: 39.50 mi²
Water Area: 0.69 mi²
Population Density: 41.0 people per mi² (35th percentile)
Bounding Box: 42.087202°N, 41.929681°S, -89.978437°E, -90.156641°W

With 1,631 residents spread across 39.50 square miles, this area has a population density of 41.0 people per square mile.

Demographics

1,631

Population

35th percentile

$45,109

Median Income

40th percentile

$101,400

Median Home Value

35th percentile

39.50 mi²

Land Area

The median household income in 61285 is $45,109, and the median home value is $101,400.

Housing

902

Total Units

703

Occupied Units

77.9%

Occupancy Rate

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

62910

Brookport

$42,121

62351

Mendon

$50,054

62888

Tamaroa

$46,894

60617

Chicago

$38,845

61937

Lovington

$49,813

61283

Tampico

$42,404

61326

Granville

$44,744

61427

Cuba

$50,216

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.