Freeburg Illinois ZIP Codes
Freeburg holds a single ZIP code.
Every ZIP code in Freeburg
| ZIP code | County |
|---|---|
| 62243 | St. Clair County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Freeburg codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Freeburg. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Freeburg ZIP code begins 622. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 79 ZIP codes, so Freeburg accounts for 1% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Freeburg
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Freeburg occupies.
Freeburg Illinois area codes in full →
Where Freeburg's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Freeburg
| City | Distance | ZIP codes |
|---|---|---|
| Smithton Illinois ZIP codes | 4.4 mi | 1 ZIP code |
| Belleville Illinois ZIP codes | 6.6 mi | 5 ZIP codes |
| Mascoutah Illinois ZIP codes | 8.3 mi | 1 ZIP code |
| New Athens Illinois ZIP codes | 8.6 mi | 1 ZIP code |
| O Fallon Illinois ZIP codes | 9.2 mi | 1 ZIP code |
| Millstadt Illinois ZIP codes | 9.3 mi | 1 ZIP code |
| Hecker Illinois ZIP codes | 10 mi | 1 ZIP code |
| Fairview Heights Illinois ZIP codes | 12 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.