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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/97638

97638

ZIP 97638 is Silver Lake, Oregon, in Lake County; area codes 458 and 541; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Lake
Metro area
none
Population
373
Coordinates
43.1497, -121.0199
☼ Live from 97638 — Silver Lake, OR

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Local time: —

Where 97638 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 97638
  • 🔢 Type 97638 into a pocket calculator and turn it upside down: BEgLG — not quite a word, sorry.
  • ➕ As a number, 97,638 = 2 × 3 × 16273. Its digits add up to 33, a total 456 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111110101100110
  • 🏠 Its numerical neighbours: 97637 (Plush, OR, 71 mi away) and 97639 (Sprague River, OR, 55 mi away).
  • 🔄 Backwards, 97638 becomes 83679, which is not a ZIP code at all.
  • 👥 30 other ZIP codes are made of exactly the same digits (36879, 37869, 38679, 38769, 38967, 39867, …). The farthest-flung twin is 96378 in APO AA, a military post office, 5,955 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther west than 94%.
  • 🎯1,180 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 97638 and you would come out at 43.15°S, 58.98°E — 686 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 23m of daylight. Shortest: 8h 59m.
  • 📏 At 390.7 square miles of land, 97638 is bigger than 96% of ZIP codes — room for about 297 Central Parks.
🌙 The sky over 97638 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population373This ZIP373
Households181This ZIP181
Housing units201This ZIP201
Median age58.2This ZIP58.2Oregon40.4US 38.9
Median household income$52,303This ZIP$52,303Oregon$83,011US $80,734
Bachelor's degree or higher7.2%This ZIP7.2%
Mean commute37.7 minThis ZIP37.7 min
Population density1.0 / sq miThis ZIP1.0 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees41This ZIP41
Annual payroll$1,557,000This ZIP$1,557,000
Tax returns filed210This ZIP210
Total adjusted gross income$11,130,000This ZIP$11,130,000

Land area

Land area390.67 sq miThis ZIP390.67 sq mi
Water area0.13 sq miThis ZIP0.13 sq mi

Other place names in 97638

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

ZIP codes near 97638

ZIPCityDistance
97735 Fort Rock, OR 16.7 mi
97641 Christmas Valley, OR 26.4 mi
97640 Summer Lake, OR 26.9 mi
97636 Paisley, OR 40.7 mi
97731 Chemult, OR 42.3 mi
97739 La Pine, OR 43.1 mi
97737 Gilchrist, OR 44.4 mi
97621 Beatty, OR 46.4 mi
97733 Crescent, OR 49.3 mi
97707 Bend, OR 52.4 mi

Find every ZIP code within 10 miles of 97638 →

Questions about this ZIP code

Where is ZIP code 97638?

97638 is in Silver Lake, Oregon, in Lake County. Its published point location is 43.1497, -121.0199.

What county is 97638 in?

97638 lies in Lake County.

What area code is 97638?

Silver Lake uses area codes 458 and 541, from NANPA's telephone records.

What time zone is 97638 in?

97638 uses America/Los_Angeles.

How many people live in 97638?

About 373 people live in ZIP code 97638, in 181 households, at 1.0 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 97638?

$52,303 a year, against $83,011 across Oregon.

What ZIP codes are near 97638?

The closest are 97735 (16.7 mi), 97641 (26.4 mi), 97640 (26.9 mi), 97636 (40.7 mi) and 97731 (42.3 mi).

Is 97638 a PO Box ZIP code?

97638 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “97638 ZIP Code — Silver Lake, Oregon (Lake County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/97638

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