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/ST-JACOB

St. Jacob ZIP code, Illinois

The ZIP code for St. Jacob, IL is 62281, and its area code is 618.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
1,759
Area code
618

Also written Saint Jacob, the spelling the Postal Service uses.

Mail addressed to St. Jacob uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

St. Jacob in numbers

About 1,759 people live in St. Jacob, in 567 households. The median household income is $112,188 a year, 35% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $201,000 (24% below the Illinois median), and median gross rent is $1,138 a month. The median age is 33.9; 34.2% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 28 minutes.

Population1,759St. Jacob1,759
Households567St. Jacob567
Median age33.9St. Jacob33.9Illinois39.0US 38.9
Median household income$112,188St. Jacob$112,188Illinois$83,390US $80,734
Median home value$201,000St. Jacob$201,000Illinois$263,300US $332,700
Median gross rent$1,138St. Jacob$1,138Illinois$1,274US $1,413
Bachelor's degree or higher34.2%St. Jacob34.2%Illinois37.8%US 35.7%
Mean commute28.0 minSt. Jacob28.0 minIllinois27.8 minUS 26.4 min
Population density2,077 / sq miSt. Jacob2,077 / sq mi

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

ZIP codes addressed as Saint Jacob

ZIP codes with the USPS city name Saint Jacob
ZIP City Type Population Median income Median home
62281 Saint Jacob , IL Standard 3,059 $132,000 $308,900

Other ZIP codes overlapping St. Jacob

These ZIP codes cover part of St. Jacob but are addressed as somewhere else.

ZIP codes overlapping St. Jacob
ZIP City Type Population Median income Median home
62249 Highland , IL Standard 16,205 $90,424 $227,700

Map of St. Jacob ZIP codes

The ZIP codes of St. Jacob, 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 St. Jacob

The nearest larger towns are Highland (10,262 people, 5.5 mi), Troy (11,647 people, 7.0 mi) and Lebanon (4,474 people, 8.5 mi).

Towns near St. Jacob
TownPopulationDistance
Highland 10,262 5.5 mi
Troy 11,647 7.0 mi
Lebanon 4,474 8.5 mi
Trenton 2,664 8.7 mi
Maryville 8,316 11.0 mi
O'Fallon 32,262 11.6 mi
Glen Carbon 13,977 12.2 mi
New Baden 3,463 12.9 mi
Scott AFB 3,957 13.0 mi
Edwardsville 26,474 13.1 mi
Collinsville 24,031 13.4 mi
Mascoutah 8,816 14.0 mi
Shiloh 14,572 14.2 mi
Breese 4,301 14.8 mi

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

Cite this page

zipcodes.pro. “St. Jacob, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/st-jacob

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