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

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zipcodes.pro — STATE/IL/COUNTY/LEE

Lee County, IL ZIP codes

There are 14 ZIP codes in Lee County, IL, in 14 towns, from 60530 to 61378. The largest are 61021 (Dixon), 61310 (Amboy) and 61006 (Ashton).

The county seat is Dixon.

ZIP codes
14
Towns
14
County seat
Dixon
County FIPS
17103
Population
33,869
Median household income
$70,292
Land area
725 sq mi
Metro area
Dixon

Lee County ZIP codes by town

Dixon (county seat)
61021

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Lee County ZIP codes

6053060553610066102161031610426105761310613186132461331613536136761378

The ZIP codes of Lee County, 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.

Lee County in numbers

About 33,869 people live in Lee County, in 13,337 households, the 42nd most populous of Illinois's 102 counties. The median household income is $70,292 a year, 16% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $154,600 (41% below the Illinois median), and median gross rent is $894 a month. The median age is 43.1; 19.4% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 25 minutes.

Population33,869Lee33,869
Households13,337Lee13,337
Median age43.1Lee43.1Illinois39.0US 38.9
Median household income$70,292Lee$70,292Illinois$83,390US $80,734
Median home value$154,600Lee$154,600Illinois$263,300US $332,700
Median gross rent$894Lee$894Illinois$1,274US $1,413
Bachelor's degree or higher19.4%Lee19.4%Illinois37.8%US 35.7%
Mean commute24.6 minLee24.6 minIllinois27.8 minUS 26.4 min
Population density47 / sq miLee47 / sq mi

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

Largest towns in Lee County

Largest towns in Lee County
TownZIP codesPopulation
Dixon 1 14,910
Amboy 1 2,384
Franklin Grove 1 988
Ashton 1 935
Paw Paw 1 932
Sublette 1 454
Lee 1 320
Steward 1 271
Compton 1 259
West Brooklyn 1 152
Harmon 1 100
Eldena 1 97
Nachusa 1 82

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Lee County.

Not sure you are in Lee County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Lee County, with figures

ZIP codes in Lee County
ZIP City Type Population Median income Median home
60530 Lee , IL Standard 992 $96,250 $264,500
60553 Steward , IL Standard 722 $109,375 $176,900
61006 Ashton , IL Standard 1,541 $75,938 $155,500
61021 Dixon , IL Standard 22,308 $69,127 $148,500
61031 Franklin Grove , IL Standard 1,492 $75,446 $136,700
61042 Harmon , IL Standard 404 $70,833 $153,600
61057 Nachusa , IL Standard 30 — —
61310 Amboy , IL Standard 3,347 $69,756 $165,800
61318 Compton , IL Standard 595 $63,021 $97,200
61324 Eldena , IL Standard 97 — —
61331 Lee Center , IL Standard 0 — —
61353 Paw Paw , IL Standard 1,282 $66,719 $165,300
61367 Sublette , IL Standard 843 $60,824 $159,700
61378 West Brooklyn , IL Standard 513 $85,350 $188,600

Cite this page

zipcodes.pro. “Lee County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/il/county/lee

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