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 — STATE/IL/COUNTY/EFFINGHAM

Effingham County, IL ZIP codes

There are 7 ZIP codes in Effingham County, IL, in 7 towns, from 62401 to 62473. The largest are 62401 (Effingham), 62411 (Altamont) and 62467 (Teutopolis).

The county seat is Effingham.

ZIP codes
7
Towns
7
County seat
Effingham
County FIPS
17049
Population
34,522
Median household income
$80,404
Land area
479 sq mi
Area code
447
Metro area
Effingham

Effingham County ZIP codes by town

Effingham (county seat)
62401

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 Effingham County ZIP codes

62401624116242462443624616246762473

The ZIP codes of Effingham 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.

Effingham County in numbers

About 34,522 people live in Effingham County, in 13,951 households, the 41st most populous of Illinois's 102 counties. The median household income is $80,404 a year, 4% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $189,500 (28% below the Illinois median), and median gross rent is $733 a month. The median age is 40.0; 26.9% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 18 minutes.

Population34,522Effingham34,522
Households13,951Effingham13,951
Median age40.0Effingham40.0Illinois39.0US 38.9
Median household income$80,404Effingham$80,404Illinois$83,390US $80,734
Median home value$189,500Effingham$189,500Illinois$263,300US $332,700
Median gross rent$733Effingham$733Illinois$1,274US $1,413
Bachelor's degree or higher26.9%Effingham26.9%Illinois37.8%US 35.7%
Mean commute18.1 minEffingham18.1 minIllinois27.8 minUS 26.4 min
Population density72 / sq miEffingham72 / 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 Effingham County

Largest towns in Effingham County
TownZIP codesPopulation
Effingham 1 12,342
Altamont 1 2,282
Teutopolis 1 1,729
Dieterich 1 1,169
Watson 1 620
Mason 1 467
Shumway 1 260

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 Effingham County.

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

Every ZIP code in Effingham County, with figures

ZIP codes in Effingham County
ZIP City Type Population Median income Median home
62401 Effingham , IL Standard 19,273 $82,374 $217,500
62411 Altamont , IL Standard 4,249 $66,111 $134,900
62424 Dieterich , IL Standard 2,500 $84,635 $225,800
62443 Mason , IL Standard 1,609 $86,950 $172,000
62461 Shumway , IL Standard 625 $74,350 $156,400
62467 Teutopolis , IL Standard 3,710 $96,406 $232,800
62473 Watson , IL Standard 1,264 $74,700 $104,800

Cite this page

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

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