Smithton ZIP code, Illinois
The ZIP code for Smithton, IL is 62285, and its area codes are 618 and 730.
- USPS city name
- 1 ZIP code
- Overlapping the city
- 2 more
- Population
- 3,680
- County
- St. Clair County
- State
- Illinois
NANPA lists no telephone rate centre for Smithton itself, so these are the area codes of the nearest one, Belleville (3.6 miles). A town on an area-code boundary can differ from its neighbour.
Mail addressed to Smithton uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.
Smithton in numbers
About 3,680 people live in Smithton, in 1,432 households. The median household income is $135,455 a year, 62% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $256,300 (about the same as the Illinois median). The median age is 45.6; 40.6% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 34 minutes.
| Population | 3,680 |
|---|---|
| Households | 1,432 |
| Median age | 45.6 |
| Median household income | $135,455 |
| Median home value | $256,300 |
| Bachelor's degree or higher | 40.6% |
| Mean commute | 34.0 min |
| Population density | 816 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Smithton village. Survey estimates carry margins of error, wider for small places. Sources and methods.
ZIP codes addressed as Smithton
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
62285 | Smithton , IL | Standard | 4,239 | $136,345 | $274,400 |
Other ZIP codes overlapping Smithton
These ZIP codes cover part of Smithton but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
62220 | Belleville , IL | Standard | 19,152 | $65,952 | $157,400 |
62243 | Freeburg , IL | Standard | 6,418 | $103,342 | $279,500 |
Map of Smithton ZIP codes
The ZIP codes of Smithton, 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 Smithton
The nearest larger towns are Freeburg (4,592 people, 4.4 mi), Millstadt (4,008 people, 6.0 mi) and Belleville (41,370 people, 7.0 mi).
| Town | Population | Distance |
|---|---|---|
| Freeburg | 4,592 | 4.4 mi |
| Millstadt | 4,008 | 6.0 mi |
| Belleville | 41,370 | 7.0 mi |
| Swansea | 14,710 | 9.5 mi |
| Waterloo | 11,129 | 10.2 mi |
| Shiloh | 14,572 | 10.2 mi |
| Scott AFB | 3,957 | 11.6 mi |
| Fairview Heights | 16,745 | 12.5 mi |
| Mascoutah | 8,816 | 12.5 mi |
| Columbia | 11,127 | 12.6 mi |
| O'Fallon | 32,262 | 13.4 mi |
| Dupo | 3,879 | 14.2 mi |
| Red Bud | 3,782 | 14.3 mi |
| Caseyville | 4,130 | 15.0 mi |
More nearby: every ZIP code in St. Clair County · Illinois ZIP codes
Cite this page
zipcodes.pro. “Smithton, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/smithton
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