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zipcodes.pro — ZIP/73503

73503

ZIP 73503 is Fort Sill, Oklahoma, in Comanche County; area code 580; Central time.

Type
Standard
Time zone
America/Chicago
County
Comanche
Metro area
Lawton, OK
Population
11,468
Coordinates
34.6830, -98.4918
☼ Live from 73503 — Fort Sill, OK

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Where 73503 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 73503
  • 🔢 Type 73503 into a pocket calculator and turn it upside down: EOSEL — not quite a word, sorry.
  • ➕ As a number, 73,503 = 3 × 3 × 8167. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10001111100011111
  • 🏠 Its numerical neighbours: 73502 (Lawton, OK, 8 mi away) and 73505 (Lawton, OK, 8 mi away).
  • 🔄 Backwards, 73503 becomes 30537 — and that is a real ZIP code: Dillard, GA, 859 miles away.
  • 👥 27 other ZIP codes are made of exactly the same digits (03753, 05733, 07533, 30357, 30375, 30537, …). The farthest-flung twin is 03753 in Grantham, NH, 1,530 miles away.
  • 🧭 Farther south than 76% of all ZIP codes, and farther west than 78%.
  • 🎯356 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 73503 and you would come out at 34.68°S, 81.51°E — 1,164 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 29m of daylight. Shortest: 9h 50m.
  • 📏 At 74.2 square miles of land, 73503 is bigger than 70% of ZIP codes — room for about 56 Central Parks.
🌙 The sky over 73503 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population11,468This ZIP11,468
Households1,755This ZIP1,755
Housing units1,848This ZIP1,848
Median age21.7This ZIP21.7Oklahoma37.0US 38.9
Median household income$60,859This ZIP$60,859Oklahoma$65,039US $80,734
Median gross rent$1,228This ZIP$1,228Oklahoma$1,014US $1,413
Bachelor's degree or higher32.2%This ZIP32.2%
Mean commute9.0 minThis ZIP9.0 min
Population density154.6 / sq miThis ZIP154.6 / sq mi

Business and tax activity

Business establishments53This ZIP53
Employees1,321This ZIP1,321
Annual payroll$99,309,000This ZIP$99,309,000
Tax returns filed2,230This ZIP2,230
Total adjusted gross income$113,911,000This ZIP$113,911,000

Land area

Land area74.19 sq miThis ZIP74.19 sq mi
Water area0.13 sq miThis ZIP0.13 sq mi

Other place names in 73503

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

ZIP codes near 73503

ZIPCityDistance
73507 Lawton, OK 3.3 mi
73557 Medicine Park, OK 3.4 mi
73506 Lawton, OK 4.1 mi
73505 Lawton, OK 7.6 mi
73502 Lawton, OK 7.7 mi
73558 Meers, OK 8.5 mi
73538 Elgin, OK 8.9 mi
73527 Cache, OK 10.4 mi
73501 Lawton, OK 14.3 mi
73540 Faxon, OK 15.4 mi

Find every ZIP code within 10 miles of 73503 →

Questions about this ZIP code

Where is ZIP code 73503?

73503 is in Fort Sill, Oklahoma, in Comanche County, part of the Lawton, OK metropolitan area. Its published point location is 34.6830, -98.4918.

What county is 73503 in?

73503 lies in Comanche County.

What area code is 73503?

Fort Sill uses area code 580, from NANPA's telephone records.

What time zone is 73503 in?

73503 uses America/Chicago.

How many people live in 73503?

About 11,468 people live in ZIP code 73503, in 1,755 households, at 154.6 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 73503?

$60,859 a year, against $65,039 across Oklahoma.

What ZIP codes are near 73503?

The closest are 73507 (3.3 mi), 73557 (3.4 mi), 73506 (4.1 mi), 73505 (7.6 mi) and 73502 (7.7 mi).

Is 73503 a PO Box ZIP code?

73503 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “73503 ZIP Code — Fort Sill, Oklahoma (Comanche County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/73503

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