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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/97603

97603

ZIP 97603 is in Klamath Falls, Oregon, in Klamath County; area codes 541 and 458; Pacific time. Klamath Falls has 3 ZIP codes; the others are 97601 and 97602.

Type
Standard
Time zone
America/Los_Angeles
County
Klamath
Metro area
Klamath Falls, OR
Population
33,222
Coordinates
42.1326, -121.6646
☼ Live from 97603 — Klamath Falls, OR

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Local time: —

Where 97603 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 97603
  • 🔢 Type 97603 into a pocket calculator and turn it upside down: EOgLG — not quite a word, sorry.
  • ➕ As a number, 97,603 = 11 × 19 × 467. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111110101000011
  • 🏠 Its numerical neighbours: 97602 (Klamath Falls, OR, 9 mi away) and 97604 (Crater Lake, OR, 65 mi away).
  • 🔄 Backwards, 97603 becomes 30679, which is not a ZIP code at all.
  • 👥 46 other ZIP codes are made of exactly the same digits (03769, 06379, 06793, 07936, 07963, 36079, …). The farthest-flung twin is 96370 in FPO AA, a military post office, 5,964 miles away.
  • 🧭 Farther north than 76% of all ZIP codes, and farther west than 95%.
  • 🎯1,211 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 97603 and you would come out at 42.13°S, 58.34°E — 758 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 15m of daylight. Shortest: 9h 06m.
  • 📏 At 340.6 square miles of land, 97603 is bigger than 96% of ZIP codes — room for about 259 Central Parks.
🌙 The sky over 97603 today
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🌋 Shake report
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Source: USGS.

People and housing

Population33,222This ZIP33,222
Households13,273This ZIP13,273
Housing units13,884This ZIP13,884
Median age38.7This ZIP38.7Oregon40.4US 38.9
Median household income$66,937This ZIP$66,937Oregon$83,011US $80,734
Median home value$282,800This ZIP$282,800Oregon$477,600US $332,700
Median gross rent$1,022This ZIP$1,022Oregon$1,525US $1,413
Bachelor's degree or higher23.4%This ZIP23.4%
Mean commute15.5 minThis ZIP15.5 min
Population density97.5 / sq miThis ZIP97.5 / sq mi

Business and tax activity

Business establishments662This ZIP662
Employees7,528This ZIP7,528
Annual payroll$303,733,000This ZIP$303,733,000
Tax returns filed13,390This ZIP13,390
Total adjusted gross income$818,424,000This ZIP$818,424,000

Land area

Land area340.63 sq miThis ZIP340.63 sq mi
Water area5.04 sq miThis ZIP5.04 sq mi

Other place names in 97603

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

ZIP codes near 97603

ZIPCityDistance
97634 Midland, OR 7.1 mi
97633 Merrill, OR 8.6 mi
97602 Klamath Falls, OR 8.8 mi
97625 Dairy, OR 13.3 mi
97632 Malin, OR 14.9 mi
97623 Bonanza, OR 18.6 mi
97627 Keno, OR 21.3 mi
96023 Dorris, CA 22.3 mi
97639 Sprague River, OR 22.3 mi
96134 Tulelake, CA 23.4 mi

Find every ZIP code within 10 miles of 97603 →

Questions about this ZIP code

Where is ZIP code 97603?

97603 is in Klamath Falls, Oregon, in Klamath County, part of the Klamath Falls, OR micropolitan area. Its published point location is 42.1326, -121.6646.

What county is 97603 in?

97603 lies in Klamath County.

What area code is 97603?

Klamath Falls uses area codes 541 and 458, from NANPA's telephone records.

What time zone is 97603 in?

97603 uses America/Los_Angeles.

How many people live in 97603?

About 33,222 people live in ZIP code 97603, in 13,273 households, at 97.5 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 97603?

$66,937 a year, against $83,011 across Oregon.

What ZIP codes are near 97603?

The closest are 97634 (7.1 mi), 97633 (8.6 mi), 97602 (8.8 mi), 97625 (13.3 mi) and 97632 (14.9 mi).

Is 97603 a PO Box ZIP code?

97603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “97603 ZIP Code — Klamath Falls, Oregon (Klamath County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/97603

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