16423 ZIP Code: Lake City, Pennsylvania
ZIP code 16423 covers Lake City, Pennsylvania. It sits in Erie County. A ZIP code is a US Postal Service mail route, not a boundary on a map, so it describes where post is delivered rather than an administrative area.
| ZIP code | 16423 |
|---|---|
| Place | Lake City |
| State | Pennsylvania (PA) |
| County or equivalent | Erie County |
| Phone area codes in Pennsylvania | 13 |
| Country | United States |
ZIP codes near 16423
- 16417 Girardabout 2 miles
- 16430 North Springfieldabout 5 miles
- 16415 Fairviewabout 5 miles
- 16411 East Springfieldabout 5 miles
- 16410 Cranesvilleabout 7 miles
- 16443 West Springfieldabout 8 miles
- 16401 Albionabout 9 miles
- 16475 Albionabout 9 miles
Distances are straight-line, between the approximate centres of each delivery area.
Got a call from a Pennsylvania number?
Enter the full 10-digit number to see who it is listed to, where it is registered, and whether it is a mobile, landline or VoIP line.
Frequently asked questions
Where is ZIP code 16423?
ZIP code 16423 is in Lake City, Pennsylvania, in Erie County. ZIP codes are mail delivery routes rather than mapped regions, so the code identifies a set of addresses the Postal Service serves together, not a district with fixed borders.
What county is 16423 in?
16423 is in Erie County, Pennsylvania. A single ZIP code can straddle a county line, because mail routes were drawn for delivery efficiency and take no notice of county boundaries, so the county shown is the one the code is primarily associated with.
What area code goes with ZIP code 16423?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. Pennsylvania uses 13 geographic area codes: 215, 223, 267, 272, 412, 445, 484, 570, 610, 717, 724, 814 and 878.
Is 16423 a real ZIP code?
Yes. 16423 appears in the GeoNames postal-code dataset as an active US code assigned to Lake City, Pennsylvania. Codes that have been retired or never issued do not appear, which is why entering one on this site returns a not-found page rather than a blank record.
Why do ZIP code boundaries look odd on maps?
Because they are not boundaries. A ZIP code is a collection of mail routes, and a route is a line a carrier walks or drives, not an area. Any ZIP code map you have seen is somebody's approximation drawn around the addresses in a code, which is also why two ZIP code maps rarely agree with each other.
Can two addresses in the same ZIP code be in different cities?
Yes, routinely. The Postal Service assigns a preferred city name to each code for addressing purposes, and that name often covers several neighbouring towns, unincorporated areas or a whole postal district. The place shown here is the one the source names for the code, not a claim that every address in it is inside that town's limits.
ZIP code, place, county and location data from GeoNames, used under CC BY 4.0, extracted 2026-08-22. ZIP codes are Postal Service delivery routes, not administrative areas, so a code can cross city and county lines and the place name shown is the one the source records for the code. Coordinates are an approximate centre of the delivery area, not a precise location. Population and time zone are not shown because the source does not publish them.