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/MARSHALL

Marshall County, IL ZIP codes

There are 8 ZIP codes in Marshall County, IL, in 8 towns, from 61369 to 61565. The largest are 61540 (Lacon), 61537 (Henry) and 61369 (Toluca). 2 more cross into it from neighbouring counties: 61570 and 61377.

The county seat is Lacon.

ZIP codes
8
Partly in it
2 more
Towns
8
County seat
Lacon
County FIPS
17123
Population
11,647
Median household income
$71,585
Land area
387 sq mi
Metro area
Peoria

Marshall County ZIP codes by town

Lacon (county seat)
61540

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.

ZIP codes partly in Marshall County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Marshall County.

Map of Marshall County ZIP codes

6136961375614246147961537615406154161565

The ZIP codes of Marshall 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.

Marshall County in numbers

About 11,647 people live in Marshall County, in 5,094 households, the 85th most populous of Illinois's 102 counties. The median household income is $71,585 a year, 14% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $142,800 (46% below the Illinois median), and median gross rent is $782 a month. The median age is 46.1; 18.0% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 29 minutes.

Population11,647Marshall11,647
Households5,094Marshall5,094
Median age46.1Marshall46.1Illinois39.0US 38.9
Median household income$71,585Marshall$71,585Illinois$83,390US $80,734
Median home value$142,800Marshall$142,800Illinois$263,300US $332,700
Median gross rent$782Marshall$782Illinois$1,274US $1,413
Bachelor's degree or higher18.0%Marshall18.0%Illinois37.8%US 35.7%
Mean commute28.9 minMarshall28.9 minIllinois27.8 minUS 26.4 min
Population density30 / sq miMarshall30 / 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 Marshall County

Largest towns in Marshall County
TownZIP codesPopulation
Henry 1 2,441
Lacon 1 1,916
Toluca 1 1,477
Varna 1 387
Sparland 1 295
La Rose 1 97
Speer 1 95
Camp Grove 1 20

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 Marshall County.

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

Every ZIP code in Marshall County, with figures

ZIP codes in Marshall County
ZIP City Type Population Median income Median home
61369 Toluca , IL Standard 1,594 $68,708 $120,400
61375 Varna , IL Standard 989 $81,293 $164,900
61424 Camp Grove , IL Standard 20 — —
61479 Speer , IL Standard 95 $135,313 $205,300
61537 Henry , IL Standard 2,743 $67,404 $118,200
61540 Lacon , IL Standard 2,753 $78,824 $154,400
61541 La Rose , IL Standard 97 $41,875 $72,900
61565 Sparland , IL Standard 1,262 $77,578 $157,200

Cite this page

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

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