66621
ZIP 66621 is in Topeka, Kansas, in Shawnee County; area code 785; Central time. Topeka has 31 ZIP codes in all.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Shawnee
- Metro area
- Topeka, KS
- Population
- 442
- Coordinates
- 39.0331, -95.7024
Weather right now
Asking the National Weather Service…
Where 66621 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 66621 into a pocket calculator and turn it upside down: IZggg — not quite a word, sorry.
- ➕ As a number, 66,621 = 3 × 53 × 419. Its digits add up to 21, a total 2,594 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10000010000111101 - 🏠 Its numerical neighbours: 66620 (Topeka, KS, 4 mi away) and 66622 (Topeka, KS, 1 mi away).
- 🔄 Backwards, 66621 becomes 12666, which is not a ZIP code at all.
- 👥 6 other ZIP codes are made of exactly the same digits (16662, 21666, 61266, 62661, 66216, 66612). The farthest-flung twin is 21666 in Stevensville, MD, 1,038 miles away.
- 🧭 Farther south than 50% of all ZIP codes, and farther west than 70%.
- 🎯163 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 66621 and you would come out at 39.03°S, 84.30°E — 994 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
- 📏 At 0.202 square miles of land, 66621 is bigger than 3% of ZIP codes — about 98 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 442This ZIP442 |
|---|---|
| Households | 0 |
| Housing units | 0 |
| Median age | 19.7This ZIP19.7Kansas37.4US 38.9 |
| Mean commute | 11.2 minThis ZIP11.2 min |
| Population density | 2,188.1 / sq miThis ZIP2,188.1 / sq mi |
Business and tax activity
| Business establishments | 4This ZIP4 |
|---|---|
| Employees | 74This ZIP74 |
| Annual payroll | $1,316,000This ZIP$1,316,000 |
Land area
| Land area | 0.20 sq miThis ZIP0.20 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 66621
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 66621
| ZIP | City | Distance |
|---|---|---|
66611 | Topeka, KS | 1.0 mi |
66622 | Topeka, KS | 1.2 mi |
66612 | Topeka, KS | 1.3 mi |
66604 | Topeka, KS | 1.3 mi |
66601 | Topeka, KS | 1.7 mi |
66625 | Topeka, KS | 1.7 mi |
66626 | Topeka, KS | 1.7 mi |
66629 | Topeka, KS | 1.7 mi |
66630 | Topeka, KS | 1.7 mi |
66636 | Topeka, KS | 1.7 mi |
Find every ZIP code within 10 miles of 66621 →
Questions about this ZIP code
Where is ZIP code 66621?
66621 is in Topeka, Kansas, in Shawnee County, part of the Topeka, KS metropolitan area. Its published point location is 39.0331, -95.7024.
What county is 66621 in?
66621 lies in Shawnee County.
What area code is 66621?
Topeka uses area code 785, from NANPA's telephone records.
What time zone is 66621 in?
66621 uses America/Chicago.
How many people live in 66621?
About 442 people live in ZIP code 66621, at 2,188.1 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 66621?
The closest are 66611 (1 mi), 66622 (1.2 mi), 66612 (1.3 mi), 66604 (1.3 mi) and 66601 (1.7 mi).
Is 66621 a PO Box ZIP code?
66621 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “66621 ZIP Code — Topeka, Kansas (Shawnee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/66621
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/66621.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.