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/MASON

Mason County, IL ZIP codes

There are 8 ZIP codes in Mason County, IL, in 8 towns, from 61532 to 62682. The largest are 62644 (Havana), 62664 (Mason City) and 62682 (San Jose). 2 more cross into it from neighbouring counties: 61546 and 62627.

The county seat is Havana.

ZIP codes
8
Partly in it
2 more
Towns
8
County seat
Havana
County FIPS
17125
Population
12,745
Median household income
$62,845
Land area
539 sq mi

Mason County ZIP codes by town

Havana (county seat)
62644

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 Mason County

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

Map of Mason County ZIP codes

6153261567626176263362644626556266462682

The ZIP codes of Mason 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.

Mason County in numbers

About 12,745 people live in Mason County, in 5,781 households, the 82nd most populous of Illinois's 102 counties. The median household income is $62,845 a year, 25% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $103,400 (61% below the Illinois median), and median gross rent is $802 a month. The median age is 45.4; 17.1% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 30 minutes.

Population12,745Mason12,745
Households5,781Mason5,781
Median age45.4Mason45.4Illinois39.0US 38.9
Median household income$62,845Mason$62,845Illinois$83,390US $80,734
Median home value$103,400Mason$103,400Illinois$263,300US $332,700
Median gross rent$802Mason$802Illinois$1,274US $1,413
Bachelor's degree or higher17.1%Mason17.1%Illinois37.8%US 35.7%
Mean commute30.4 minMason30.4 minIllinois27.8 minUS 26.4 min
Population density24 / sq miMason24 / 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 Mason County

Largest towns in Mason County
TownZIP codesPopulation
Havana 1 2,989
Mason City 1 2,159
San Jose 1 557
Easton 1 285
Kilbourne 1 268
Bath 1 224
Forest City 1 223
Topeka 1 47

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 Mason County.

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

Every ZIP code in Mason County, with figures

ZIP codes in Mason County
ZIP City Type Population Median income Median home
61532 Forest City , IL Standard 347 $71,544 $116,000
61567 Topeka , IL Standard 411 $68,750 $87,700
62617 Bath , IL Standard 524 $56,667 $69,000
62633 Easton , IL Standard 638 $44,783 $86,900
62644 Havana , IL Standard 4,615 $57,689 $102,900
62655 Kilbourne , IL Standard 594 $56,750 —
62664 Mason City , IL Standard 2,922 $70,509 $101,200
62682 San Jose , IL Standard 684 $60,125 $100,400

Cite this page

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

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