Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/IL/THOMSON

Thomson ZIP code, Illinois

The ZIP code for Thomson, IL is 61285, and its area code is 815.

USPS city name
1 ZIP code
Population
1,757
Area code
815

Thomson in numbers

About 1,757 people live in Thomson, in 166 households. The median household income is $61,250 a year, 27% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $117,000 (56% below the Illinois median), and median gross rent is $918 a month. The median age is 40.7; 4.4% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 18 minutes.

Population1,757Thomson1,757
Households166Thomson166
Median age40.7Thomson40.7Illinois39.0US 38.9
Median household income$61,250Thomson$61,250Illinois$83,390US $80,734
Median home value$117,000Thomson$117,000Illinois$263,300US $332,700
Median gross rent$918Thomson$918Illinois$1,274US $1,413
Bachelor's degree or higher4.4%Thomson4.4%Illinois37.8%US 35.7%
Mean commute17.5 minThomson17.5 minIllinois27.8 minUS 26.4 min
Population density792 / sq miThomson792 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Thomson village. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Thomson

ZIP codes with the USPS city name Thomson
ZIP City Type Population Median income Median home
61285 Thomson , IL Standard 2,728 $68,500 $173,100

Map of Thomson ZIP codes

61285

The ZIP codes of Thomson, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Thomson

The nearest larger towns are Fulton (3,709 people, 7.9 mi), Savanna (2,816 people, 8.3 mi) and Clinton, IA (24,322 people, 11 mi).

Towns near Thomson
TownPopulationDistance
Fulton 3,709 7.9 mi
Savanna 2,816 8.3 mi
Clinton, IA 24,322 11.3 mi
Morrison 3,739 13.9 mi
Camanche, IA 4,550 15.1 mi
DeWitt, IA 5,546 24.6 mi
Sterling 14,717 24.6 mi
Rock Falls 8,587 25.7 mi
Maquoketa, IA 6,075 28.9 mi
Le Claire, IA 4,735 29.5 mi

More nearby: every ZIP code in Carroll County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Thomson, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/thomson

Underlying data is public domain or openly licensed — sources, vintages and licences.