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Where 16921 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 16921 into a pocket calculator and turn it upside down: IZGgI — not quite a word, sorry.
- ➕ 16921 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100001000011001 - 🏠 Its numerical neighbours: 16920 (Elkland, PA, 21 mi away) and 16922 (Galeton, PA, 10 mi away).
- 🔄 Backwards, 16921 becomes 12961 — and that is a real ZIP code: Moriah Center, NY, 256 miles away.
- 👥 24 other ZIP codes are made of exactly the same digits (11692, 11962, 12169, 12196, 12916, 12961, …). The farthest-flung twin is 91612 in North Hollywood, CA, 2,264 miles away.
- 🧭 Farther north than 73% of all ZIP codes, and farther east than 80%.
- 🎯1,107 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 16921 and you would come out at 41.72°S, 102.48°E — 1,000 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 13m of daylight. Shortest: 9h 09m.
- 📏 At 84.7 square miles of land, 16921 is bigger than 74% of ZIP codes — room for about 64 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 622This ZIP622 |
|---|---|
| Households | 280This ZIP280 |
| Housing units | 739This ZIP739 |
| Median age | 55.0This ZIP55.0Pennsylvania40.9US 38.9 |
| Median household income | $52,969This ZIP$52,969Pennsylvania$77,971US $80,734 |
| Median home value | $189,100This ZIP$189,100Pennsylvania$254,500US $332,700 |
| Median gross rent | $967This ZIP$967Pennsylvania$1,209US $1,413 |
| Bachelor's degree or higher | 14.1%This ZIP14.1% |
| Mean commute | 28.8 minThis ZIP28.8 min |
| Population density | 7.3 / sq miThis ZIP7.3 / sq mi |
Business and tax activity
| Business establishments | 4This ZIP4 |
|---|---|
| Employees | 14This ZIP14 |
| Annual payroll | $630,000This ZIP$630,000 |
| Tax returns filed | 240This ZIP240 |
| Total adjusted gross income | $13,139,000This ZIP$13,139,000 |
Land area
| Land area | 84.67 sq miThis ZIP84.67 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
Counties 16921 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Tioga County | 98.7% |
| Potter County | 1.3% |
ZIP codes near 16921
| ZIP | City | Distance |
|---|---|---|
16943 | Sabinsville, PA | 9.9 mi |
16922 | Galeton, PA | 10.1 mi |
16901 | Wellsboro, PA | 10.7 mi |
16950 | Westfield, PA | 12.0 mi |
16938 | Morris, PA | 12.0 mi |
17727 | Cedar Run, PA | 13.7 mi |
16935 | Middlebury Center, PA | 14.0 mi |
17769 | Slate Run, PA | 14.7 mi |
16948 | Ulysses, PA | 15.2 mi |
16928 | Knoxville, PA | 16.5 mi |
Find every ZIP code within 10 miles of 16921 →
Questions about this ZIP code
Where is ZIP code 16921?
16921 is in Gaines, Pennsylvania, in Tioga County. Its published point location is 41.7231, -77.5224.
What county is 16921 in?
16921 spans 2 counties: Tioga County and Potter County. Most of it falls in Tioga County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What time zone is 16921 in?
16921 uses America/New_York.
How many people live in 16921?
About 622 people live in ZIP code 16921, in 280 households, at 7.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 16921?
$52,969 a year, against $77,971 across Pennsylvania.
What ZIP codes are near 16921?
The closest are 16943 (9.9 mi), 16922 (10.1 mi), 16901 (10.7 mi), 16950 (12 mi) and 16938 (12 mi).
Is 16921 a PO Box ZIP code?
16921 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “16921 ZIP Code — Gaines, Pennsylvania (Tioga County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/16921
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/16921.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.