Dorchester ZIP codes, Illinois
No ZIP code is named for Dorchester, IL; addresses there use a neighbouring town's name. The ZIP code covering it is 62033. Its area code is 618.
- USPS city name
- 0 ZIP codes
- Overlapping the city
- 1 more
- Population
- 182
- Area code
- 618
- County
- Macoupin County
- State
- Illinois
ZIP codes covering Dorchester
These ZIP codes cover part of Dorchester but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
62033 | Gillespie , IL | Standard | 4,294 | $78,286 | $106,200 |
Map of Dorchester ZIP codes
The ZIP codes of Dorchester, 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 Dorchester
The nearest larger towns are Wilsonville (505 people, 2.1 mi), Mount Clare (292 people, 3.0 mi) and Royal Lakes (301 people, 4.2 mi).
| Town | Population | Distance |
|---|---|---|
| Gillespie | 2,815 | 4.7 mi |
| Staunton | 4,298 | 7.3 mi |
| Holiday Shores | 2,782 | 11.3 mi |
| Carlinville | 5,480 | 13.3 mi |
| Litchfield | 6,834 | 13.4 mi |
| Bethalto | 9,239 | 15.3 mi |
| Rosewood Heights | 4,229 | 16.9 mi |
| East Alton | 5,689 | 18.3 mi |
| Wood River | 10,279 | 18.5 mi |
| Alton | 25,279 | 18.9 mi |
| Godfrey | 17,712 | 20.2 mi |
| Edwardsville | 26,474 | 21.1 mi |
| Hillsboro | 5,803 | 23.1 mi |
| Glen Carbon | 13,977 | 23.2 mi |
More nearby: every ZIP code in Macoupin County · Illinois ZIP codes
Cite this page
zipcodes.pro. “Dorchester, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/dorchester
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