Williamstown, PA ZIP Codes, Coordinates & Counties
Williamstown, Pennsylvania has 1 ZIP code in Dauphin county. The approximate center of Williamstown is 40.589, -76.632. Williamstown has about 17,113 known street addresses.
ZIP codes in Williamstown, PA
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 17098 | Dauphin | 40.589 | -76.632 |
Counties Williamstown spans
Dauphin
Most common streets in Williamstown
Market, Broad, 5th, Water, West, Spruce, North, Vine, Orange, 6th
Frequently asked questions
What ZIP codes are in Williamstown, PA?
Williamstown, Pennsylvania has 1 ZIP code, ranging from 17098 to 17098. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Williamstown, PA in?
Williamstown is in Dauphin county.
What are the latitude and longitude of Williamstown, PA?
The approximate center of Williamstown, Pennsylvania is latitude 40.589, longitude -76.632. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Williamstown, PA have?
Williamstown has 1 ZIP code.
How many addresses are in Williamstown, PA?
Williamstown, Pennsylvania has about 17,113 known street addresses in the sthan.io US address database.
What are the most common streets in Williamstown, PA?
Some of the most common street names in Williamstown are Market, Broad, 5th, Water, West, Spruce.
What cities are near Williamstown, PA?
Cities near Williamstown include Wiconisco (2 mi), Spring Glen (3 mi), Sacramento (4 mi), Tower City (4 mi), Gratz (5 mi).
Cities near Williamstown
Wiconisco, PA (2 mi) Spring Glen, PA (3 mi) Sacramento, PA (4 mi) Tower City, PA (4 mi) Gratz, PA (5 mi) Lykens, PA (5 mi) Muir, PA (6 mi) Valley View, PA (6 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database