18921
ZIP 18921 is Ferndale, Pennsylvania, in Bucks County; area codes 484 and 610; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Bucks
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
- Population
- 160
- Coordinates
- 40.5296, -75.1711
Weather right now
Asking the National Weather Service…
Where 18921 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 18921 into a pocket calculator and turn it upside down: IZGBI — not quite a word, sorry.
- ➕ As a number, 18,921 = 3 × 7 × 17 × 53. Its digits add up to 21, a total 2,594 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100100111101001 - 🏠 Its numerical neighbours: 18920 (Erwinna, PA, 5 mi away) and 18922 (Forest Grove, PA, 17 mi away).
- 🔄 Backwards, 18921 becomes 12981 — and that is a real ZIP code: Saranac, NY, 291 miles away.
- 👥 20 other ZIP codes are made of exactly the same digits (12189, 12198, 12819, 12918, 12981, 18219, …). The farthest-flung twin is 91182 in Pasadena, CA, 2,377 miles away.
- 🧭 Farther north than 61% of all ZIP codes, and farther east than 87%.
- 🎯1,233 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 18921 and you would come out at 40.53°S, 104.83°E — 853 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 04m of daylight. Shortest: 9h 16m.
- 📏 At 0.368 square miles of land, 18921 is bigger than 4% of ZIP codes — about 178 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 160This ZIP160 |
|---|---|
| Households | 86This ZIP86 |
| Housing units | 86This ZIP86 |
| Median age | 61.3This ZIP61.3Pennsylvania40.9US 38.9 |
| Median home value | $404,400This ZIP$404,400Pennsylvania$254,500US $332,700 |
| Bachelor's degree or higher | 0.0% |
| Population density | 434.8 / sq miThis ZIP434.8 / sq mi |
Business and tax activity
| Business establishments | 3This ZIP3 |
|---|---|
| Employees | 9This ZIP9 |
| Annual payroll | $233,000This ZIP$233,000 |
Land area
| Land area | 0.37 sq miThis ZIP0.37 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 18921
| ZIP | City | Distance |
|---|---|---|
18953 | Revere, PA | 1.1 mi |
18930 | Kintnersville, PA | 2.2 mi |
18972 | Upper Black Eddy, PA | 2.4 mi |
18942 | Ottsville, PA | 3.8 mi |
18039 | Durham, PA | 4.2 mi |
18077 | Riegelsville, PA | 4.5 mi |
18920 | Erwinna, PA | 5.1 mi |
08848 | Milford, NJ | 5.9 mi |
18081 | Springtown, PA | 6.3 mi |
18910 | Bedminster, PA | 7.2 mi |
Find every ZIP code within 10 miles of 18921 →
Questions about this ZIP code
Where is ZIP code 18921?
18921 is in Ferndale, Pennsylvania, in Bucks County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 40.5296, -75.1711.
What county is 18921 in?
18921 lies in Bucks County.
What area code is 18921?
Ferndale uses area codes 484 and 610, from NANPA's telephone records.
What time zone is 18921 in?
18921 uses America/New_York.
How many people live in 18921?
About 160 people live in ZIP code 18921, in 86 households, at 434.8 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 18921?
The closest are 18953 (1.1 mi), 18930 (2.2 mi), 18972 (2.4 mi), 18942 (3.8 mi) and 18039 (4.2 mi).
Is 18921 a PO Box ZIP code?
18921 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “18921 ZIP Code — Ferndale, Pennsylvania (Bucks County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18921
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/18921.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.