ZIP Code 17121
17121 is one of Pennsylvania's ZIP codes, delivering to addresses in Harrisburg, Dauphin County.
- City
- Harrisburg
- County
- Dauphin County
- State
- Pennsylvania
- Prefix
- 171xx
Where this code sits
17121 is part of the 171xx range, the group of codes handled by one mail processing centre. Harrisburg is served by 26 ZIP codes in total; the full list, with the county each falls in, is on the Harrisburg page.
Harrisburg Pennsylvania ZIP codes →
Area codes over the same ground
Postal and telephone geography are drawn separately, so these codes cover the area 17121 delivers to without sharing its boundary.
ZIP codes nearest 17121
| ZIP code | Distance | Delivers to |
|---|---|---|
| ZIP code 17110 | 0.7 mi | Harrisburg, PA |
| ZIP code 17107 | 0.9 mi | Harrisburg, PA |
| ZIP code 17105 | 1.5 mi | Harrisburg, PA |
| ZIP code 17102 | 1.5 mi | Harrisburg, PA |
| ZIP code 17128 | 1.5 mi | Harrisburg, PA |
| ZIP code 17130 | 1.8 mi | Harrisburg, PA |
| ZIP code 17124 | 1.9 mi | Harrisburg, PA |
| ZIP code 17123 | 1.9 mi | Harrisburg, PA |
Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope ZIP code 17121. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.