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zipcodes.pro — ZIP/66603

66603

ZIP 66603 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
1,830
Coordinates
39.0575, -95.6747
☼ Live from 66603 — Topeka, KS

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Where 66603 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 66603
  • 🔢 Type 66603 into a pocket calculator and turn it upside down: EOggg — not quite a word, sorry.
  • ➕ As a number, 66,603 = 3 × 149 × 149. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000010000101011
  • 🏠 Its numerical neighbours: 66601 (Topeka, KS, 1 mi away) and 66604 (Topeka, KS, 3 mi away).
  • 🔄 Backwards, 66603 becomes 30666 — and that is a real ZIP code: Statham, GA, 757 miles away.
  • 👥 10 other ZIP codes are made of exactly the same digits (30666, 36066, 36606, 36660, 60636, 63066, …). The farthest-flung twin is 30666 in Statham, GA, 757 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther west than 70%.
  • 🎯164 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 66603 and you would come out at 39.06°S, 84.33°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 0.894 square miles of land, 66603 is bigger than 7% of ZIP codes — about 433 football fields.
🌙 The sky over 66603 today
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🌋 Shake report
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Source: USGS.

People and housing

Population1,830This ZIP1,830
Households831This ZIP831
Housing units1,380This ZIP1,380
Median age29.0This ZIP29.0Kansas37.4US 38.9
Median household income$44,688This ZIP$44,688Kansas$74,275US $80,734
Median home value$107,900This ZIP$107,900Kansas$217,200US $332,700
Median gross rent$698This ZIP$698Kansas$1,060US $1,413
Bachelor's degree or higher15.3%This ZIP15.3%
Mean commute11.3 minThis ZIP11.3 min
Population density2,047.0 / sq miThis ZIP2,047.0 / sq mi

Business and tax activity

Business establishments275This ZIP275
Employees5,090This ZIP5,090
Annual payroll$385,968,000This ZIP$385,968,000
Tax returns filed590This ZIP590
Total adjusted gross income$23,531,000This ZIP$23,531,000

Land area

Land area0.89 sq miThis ZIP0.89 sq mi
Water area0.06 sq miThis ZIP0.06 sq mi

Other place names in 66603

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

ZIP codes near 66603

ZIPCityDistance
66601 Topeka, KS 0.7 mi
66625 Topeka, KS 0.7 mi
66626 Topeka, KS 0.7 mi
66629 Topeka, KS 0.7 mi
66630 Topeka, KS 0.7 mi
66636 Topeka, KS 0.7 mi
66683 Topeka, KS 0.7 mi
66699 Topeka, KS 0.7 mi
66612 Topeka, KS 1.2 mi
66608 Topeka, KS 1.7 mi

Find every ZIP code within 10 miles of 66603 →

Questions about this ZIP code

Where is ZIP code 66603?

66603 is in Topeka, Kansas, in Shawnee County, part of the Topeka, KS metropolitan area. Its published point location is 39.0575, -95.6747.

What county is 66603 in?

66603 lies in Shawnee County.

What area code is 66603?

Topeka uses area code 785, from NANPA's telephone records.

What time zone is 66603 in?

66603 uses America/Chicago.

How many people live in 66603?

About 1,830 people live in ZIP code 66603, in 831 households, at 2,047.0 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 66603?

$44,688 a year, against $74,275 across Kansas.

What ZIP codes are near 66603?

The closest are 66601 (0.7 mi), 66625 (0.7 mi), 66626 (0.7 mi), 66629 (0.7 mi) and 66630 (0.7 mi).

Is 66603 a PO Box ZIP code?

66603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “66603 ZIP Code — Topeka, Kansas (Shawnee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/66603

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