Effingham Kansas ZIP Codes
Effingham holds a single ZIP code.
Every ZIP code in Effingham
| ZIP code | County |
|---|---|
| 66023 | Atchison 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Effingham codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Effingham. 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 Effingham ZIP code begins 660. Those first three digits identify the sectional center facility that processes mail for this part of Kansas. Statewide that range covers 71 ZIP codes, so Effingham accounts for 1% of it.
Every Kansas ZIP prefix and the region it covers →
Area codes covering Effingham
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Effingham occupies.
Effingham Kansas area codes in full →
Where Effingham's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Effingham
| City | Distance | ZIP codes |
|---|---|---|
| Lancaster Kansas ZIP codes | 6.0 mi | 1 ZIP code |
| Muscotah Kansas ZIP codes | 6.9 mi | 1 ZIP code |
| Nortonville Kansas ZIP codes | 8.2 mi | 1 ZIP code |
| Everest Kansas ZIP codes | 11 mi | 1 ZIP code |
| Horton Kansas ZIP codes | 12 mi | 1 ZIP code |
| Whiting Kansas ZIP codes | 12 mi | 1 ZIP code |
| Valley Falls Kansas ZIP codes | 13 mi | 1 ZIP code |
| Atchison Kansas ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.