Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/66021

66021

ZIP 66021 is Edgerton, Kansas, mostly in Johnson County; area code 913; Central time.

Type
Standard
Time zone
America/Chicago
County
Johnson +2 more
Metro area
Kansas City, MO-KS
Population
2,819
Coordinates
38.7566, -95.0051
☼ Live from 66021 — Edgerton, KS

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 66021 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.

★ Weird and wonderful facts about 66021
  • 🔢 Type 66021 into a pocket calculator and turn it upside down: IZOgg — not quite a word, sorry.
  • ➕ As a number, 66,021 = 3 × 59 × 373. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000000111100101
  • 🏠 Its numerical neighbours: 66020 (Easton, KS, 41 mi away) and 66023 (Effingham, KS, 56 mi away).
  • 🔄 Backwards, 66021 becomes 12066 — and that is a real ZIP code: Esperance, NY, 1,115 miles away.
  • 👥 31 other ZIP codes are made of exactly the same digits (01266, 02661, 06126, 06612, 12066, 16260, …). The farthest-flung twin is 02661 in South Harwich, MA, 1,328 miles away.
  • 🧭 Farther south than 53% of all ZIP codes, and farther west than 68%.
  • 🎯205 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 66021 and you would come out at 38.76°S, 84.99°E — 1,033 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 27m.
  • 📏 At 51.2 square miles of land, 66021 is bigger than 60% of ZIP codes — room for about 39 Central Parks.
🌙 The sky over 66021 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,819This ZIP2,819
Households930This ZIP930
Housing units985This ZIP985
Median age38.4This ZIP38.4Kansas37.4US 38.9
Median household income$88,125This ZIP$88,125Kansas$74,275US $80,734
Median home value$242,300This ZIP$242,300Kansas$217,200US $332,700
Median gross rent$1,288This ZIP$1,288Kansas$1,060US $1,413
Bachelor's degree or higher21.3%This ZIP21.3%
Mean commute25.6 minThis ZIP25.6 min
Population density55.0 / sq miThis ZIP55.0 / sq mi

Business and tax activity

Business establishments65This ZIP65
Employees3,952This ZIP3,952
Annual payroll$344,740,000This ZIP$344,740,000
Tax returns filed1,230This ZIP1,230
Total adjusted gross income$97,686,000This ZIP$97,686,000

Land area

Land area51.23 sq miThis ZIP51.23 sq mi
Water area4.04 sq miThis ZIP4.04 sq mi

Counties 66021 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Johnson County 64.2%
Miami County 26.5%
Douglas County 9.3%

Other place names in 66021

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 66021

ZIPCityDistance
66030 Gardner, KS 5.3 mi
66092 Wellsville, KS 7.2 mi
66031 New Century, KS 8.1 mi
66083 Spring Hill, KS 9.6 mi
66025 Eudora, KS 10.3 mi
66036 Hillsdale, KS 10.7 mi
66061 Olathe, KS 11.6 mi
66006 Baldwin City, KS 12.7 mi
66062 Olathe, KS 13.2 mi
66051 Olathe, KS 13.6 mi

Find every ZIP code within 10 miles of 66021 →

Questions about this ZIP code

Where is ZIP code 66021?

66021 is in Edgerton, Kansas, in Johnson County, part of the Kansas City, MO-KS metropolitan area. Its published point location is 38.7566, -95.0051.

What county is 66021 in?

66021 spans 3 counties: Johnson County, Miami County and Douglas County. Most of it falls in Johnson 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 area code is 66021?

Edgerton uses area code 913, from NANPA's telephone records.

What time zone is 66021 in?

66021 uses America/Chicago.

How many people live in 66021?

About 2,819 people live in ZIP code 66021, in 930 households, at 55.0 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 66021?

$88,125 a year, against $74,275 across Kansas.

What ZIP codes are near 66021?

The closest are 66030 (5.3 mi), 66092 (7.2 mi), 66031 (8.1 mi), 66083 (9.6 mi) and 66025 (10.3 mi).

Is 66021 a PO Box ZIP code?

66021 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “66021 ZIP Code — Edgerton, Kansas (Johnson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/66021

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/66021.json

Underlying data is public domain or openly licensed — sources, vintages and licences.