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/95604

95604

ZIP 95604 is in Auburn, California, in Placer County; area codes 530 and 837; Pacific time. Auburn has 3 ZIP codes; the others are 95602 and 95603.

Type
Standard
Time zone
America/Los_Angeles
County
Placer
Population
27
Coordinates
39.2385, -120.0714
☼ Live from 95604 — Auburn, CA

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Local time: —

Where 95604 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 95604
  • 🔢 Type 95604 into a pocket calculator and turn it upside down: hOgSG — not quite a word, sorry.
  • ➕ As a number, 95,604 = 2 × 2 × 3 × 31 × 257. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010101110100
  • 🏠 Its numerical neighbours: 95603 (Auburn, CA, 59 mi away) and 95605 (West Sacramento, CA, 91 mi away).
  • 🔄 Backwards, 95604 becomes 40659, which is not a ZIP code at all.
  • 👥 47 other ZIP codes are made of exactly the same digits (04956, 04965, 05469, 05649, 06459, 06495, …). The farthest-flung twin is 96450 in FPO AA, a military post office, 7,052 miles away.
  • 🧭 Farther north than 50% of all ZIP codes, and farther west than 93%.
  • 🎯1,143 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 95604 and you would come out at 39.24°S, 59.93°E — 863 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 0.050 square miles of land, 95604 is bigger than 1% of ZIP codes — about 24 football fields.
🌙 The sky over 95604 today
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🌋 Shake report
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Source: USGS.

People and housing

Population27This ZIP27
Households13This ZIP13
Housing units79This ZIP79
Bachelor's degree or higher100.0%This ZIP100.0%
Population density540.0 / sq miThis ZIP540.0 / sq mi

Business and tax activity

Business establishments17This ZIP17
Employees106This ZIP106
Annual payroll$5,900,000This ZIP$5,900,000

Land area

Land area0.05 sq miThis ZIP0.05 sq mi
Water area0.00 sq mi

Other place names in 95604

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

ZIP codes near 95604

ZIPCityDistance
96148 Tahoe Vista, CA 1.1 mi
96140 Carnelian Bay, CA 1.4 mi
96143 Kings Beach, CA 2.9 mi
89402 Crystal Bay, NV 3.7 mi
96145 Tahoe City, CA 5.8 mi
89452 Incline Village, NV 6.3 mi
89451 Incline Village, NV 7.0 mi
89450 Incline Village, NV 7.1 mi
96160 Truckee, CA 8.6 mi
96162 Truckee, CA 8.6 mi

Find every ZIP code within 10 miles of 95604 →

Questions about this ZIP code

Where is ZIP code 95604?

95604 is in Auburn, California, in Placer County, part of the Sacramento-Roseville-Folsom, CA metropolitan area. Its published point location is 39.2385, -120.0714.

What county is 95604 in?

95604 lies in Placer County.

What area code is 95604?

Auburn uses area codes 530 and 837, from NANPA's telephone records.

What time zone is 95604 in?

95604 uses America/Los_Angeles.

How many people live in 95604?

About 27 people live in ZIP code 95604, in 13 households, at 540.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 95604?

The closest are 96148 (1.1 mi), 96140 (1.4 mi), 96143 (2.9 mi), 89402 (3.7 mi) and 96145 (5.8 mi).

Is 95604 a PO Box ZIP code?

95604 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “95604 ZIP Code — Auburn, California (Placer County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/95604

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