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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/95121

95121

ZIP 95121 is in San Jose, California, in Santa Clara County; area codes 408 and 669; Pacific time. San Jose has 58 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Santa Clara
Population
36,463
Coordinates
37.3046, -121.8098
☼ Live from 95121 — San Jose, CA

Weather right now

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Local time: —

Where 95121 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 95121
  • 🔢 Type 95121 into a pocket calculator and turn it upside down: IZISG — not quite a word, sorry.
  • ➕ As a number, 95,121 = 3 × 3 × 3 × 13 × 271. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111001110010001
  • 🏠 Its numerical neighbours: 95120 (San Jose, CA, 8 mi away) and 95122 (San Jose, CA, 2 mi away).
  • 🔄 Backwards, 95121 becomes 12159 — and that is a real ZIP code: Slingerlands, NY, 2,530 miles away.
  • 👥 23 other ZIP codes are made of exactly the same digits (11952, 12159, 12195, 12915, 15129, 15219, …). The farthest-flung twin is 11952 in Mattituck, NY, 2,617 miles away.
  • 🧭 Farther south than 63% of all ZIP codes, and farther west than 95%.
  • 🎯1,263 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 95121 and you would come out at 37.30°S, 58.19°E — 1,026 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 44m of daylight. Shortest: 9h 35m.
  • 📏 At 4.4 square miles of land, 95121 is bigger than 18% of ZIP codes — room for about 3.4 Central Parks.
🌙 The sky over 95121 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population36,463This ZIP36,463
Households9,828This ZIP9,828
Housing units10,005This ZIP10,005
Median age42.8This ZIP42.8California37.9US 38.9
Median household income$150,605This ZIP$150,605California$99,122US $80,734
Median home value$1,051,900This ZIP$1,051,900California$734,700US $332,700
Median gross rent$3,061This ZIP$3,061California$2,036US $1,413
Bachelor's degree or higher34.5%This ZIP34.5%
Mean commute30.4 minThis ZIP30.4 min
Population density8,203.1 / sq miThis ZIP8,203.1 / sq mi

Business and tax activity

Business establishments486This ZIP486
Employees4,199This ZIP4,199
Annual payroll$163,802,000This ZIP$163,802,000
Tax returns filed18,510This ZIP18,510
Total adjusted gross income$1,839,196,000This ZIP$1,839,196,000

Land area

Land area4.45 sq miThis ZIP4.45 sq mi
Water area0.00 sq mi

Other place names in 95121

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

ZIP codes near 95121

ZIPCityDistance
95151 San Jose, CA 1.4 mi
95111 San Jose, CA 1.7 mi
95122 San Jose, CA 2.2 mi
95148 San Jose, CA 2.5 mi
95136 San Jose, CA 3.3 mi
95116 San Jose, CA 3.9 mi
95156 San Jose, CA 4.1 mi
95193 San Jose, CA 4.3 mi
95153 San Jose, CA 4.3 mi
95123 San Jose, CA 4.3 mi

Find every ZIP code within 10 miles of 95121 →

Questions about this ZIP code

Where is ZIP code 95121?

95121 is in San Jose, California, in Santa Clara County, part of the San Jose-Sunnyvale-Santa Clara, CA metropolitan area. Its published point location is 37.3046, -121.8098.

What county is 95121 in?

95121 lies in Santa Clara County.

What area code is 95121?

San Jose uses area codes 408 and 669, from NANPA's telephone records.

What time zone is 95121 in?

95121 uses America/Los_Angeles.

How many people live in 95121?

About 36,463 people live in ZIP code 95121, in 9,828 households, at 8,203.1 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 95121?

$150,605 a year, against $99,122 across California.

What ZIP codes are near 95121?

The closest are 95151 (1.4 mi), 95111 (1.7 mi), 95122 (2.2 mi), 95148 (2.5 mi) and 95136 (3.3 mi).

Is 95121 a PO Box ZIP code?

95121 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “95121 ZIP Code — San Jose, California (Santa Clara County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/95121

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