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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/95257

95257

ZIP 95257 is Wilseyville, California, in Calaveras County; area code 209; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Calaveras
Metro area
none
Population
569
Coordinates
38.3799, -120.4680
☼ Live from 95257 — Wilseyville, CA

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Local time: —

Where 95257 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 95257
  • 🔢 Type 95257 into a pocket calculator and turn it upside down: LSZSG — not quite a word, sorry.
  • ➕ 95257 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010000011001
  • 🏠 Its numerical neighbours: 95255 (West Point, CA, 3 mi away) and 95258 (Woodbridge, CA, 48 mi away).
  • 🔄 Backwards, 95257 becomes 75259, which is not a ZIP code at all.
  • 👥 20 other ZIP codes are made of exactly the same digits (27559, 29575, 52759, 55792, 55927, 55972, …). The farthest-flung twin is 29575 in Myrtle Beach, SC, 2,323 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther west than 94%.
  • 🎯1,175 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 95257 and you would come out at 38.38°S, 59.53°E — 924 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 29m.
  • 📏 At 11.8 square miles of land, 95257 is bigger than 29% of ZIP codes — room for about 8.9 Central Parks.
🌙 The sky over 95257 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population569This ZIP569
Households298This ZIP298
Housing units402This ZIP402
Median age66.2This ZIP66.2California37.9US 38.9
Median household income$71,437This ZIP$71,437California$99,122US $80,734
Median home value$352,900This ZIP$352,900California$734,700US $332,700
Bachelor's degree or higher7.7%This ZIP7.7%
Population density48.4 / sq miThis ZIP48.4 / sq mi

Business and tax activity

Business establishments4This ZIP4
Employees6This ZIP6
Annual payroll$248,000This ZIP$248,000
Tax returns filed200This ZIP200
Total adjusted gross income$13,353,000This ZIP$13,353,000

Land area

Land area11.76 sq miThis ZIP11.76 sq mi
Water area0.06 sq miThis ZIP0.06 sq mi

ZIP codes near 95257

ZIPCityDistance
95255 West Point, CA 2.8 mi
95248 Rail Road Flat, CA 4.3 mi
95232 Glencoe, CA 6.1 mi
95246 Mountain Ranch, CA 9.1 mi
95245 Mokelumne Hill, CA 9.3 mi
95665 Pine Grove, CA 10.1 mi
95689 Volcano, CA 10.2 mi
95224 Avery, CA 12.9 mi
95684 Somerset, CA 13.0 mi
95666 Pioneer, CA 13.5 mi

Find every ZIP code within 10 miles of 95257 →

Questions about this ZIP code

Where is ZIP code 95257?

95257 is in Wilseyville, California, in Calaveras County. Its published point location is 38.3799, -120.4680.

What county is 95257 in?

95257 lies in Calaveras County.

What area code is 95257?

Wilseyville uses area code 209, from NANPA's telephone records.

What time zone is 95257 in?

95257 uses America/Los_Angeles.

How many people live in 95257?

About 569 people live in ZIP code 95257, in 298 households, at 48.4 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 95257?

$71,437 a year, against $99,122 across California.

What ZIP codes are near 95257?

The closest are 95255 (2.8 mi), 95248 (4.3 mi), 95232 (6.1 mi), 95246 (9.1 mi) and 95245 (9.3 mi).

Is 95257 a PO Box ZIP code?

95257 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “95257 ZIP Code — Wilseyville, California (Calaveras County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/95257

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