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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/95304

95304

ZIP 95304 is in Tracy, California, mostly in San Joaquin County; area codes 209 and 350; Pacific time. Tracy has 5 ZIP codes; the others are 95376, 95377, 95378 and 95391.

Type
Standard
Time zone
America/Los_Angeles
County
San Joaquin +1 more
Metro area
Stockton-Lodi, CA
Population
15,841
Coordinates
37.6806, -121.3816
☼ Live from 95304 — Tracy, CA

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Where 95304 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 95304
  • 🔢 Type 95304 into a pocket calculator and turn it upside down: hOESG — not quite a word, sorry.
  • ➕ As a number, 95,304 = 2 × 2 × 2 × 3 × 11 × 19 × 19. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010001001000
  • 🏠 Its numerical neighbours: 95303 (Ballico, CA, 42 mi away) and 95305 (Big Oak Flat, CA, 57 mi away).
  • 🔄 Backwards, 95304 becomes 40359 — and that is a real ZIP code: Owenton, KY, 1,976 miles away.
  • 👥 52 other ZIP codes are made of exactly the same digits (04359, 04539, 04935, 04953, 05439, 09354, …). The farthest-flung twin is 09354 in APO AE, a military post office, 5,417 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 95%.
  • 🎯1,234 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 95304 and you would come out at 37.68°S, 58.62°E — 991 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 46m of daylight. Shortest: 9h 33m.
  • 📏 At 153.5 square miles of land, 95304 is bigger than 87% of ZIP codes — room for about 117 Central Parks.
🌙 The sky over 95304 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population15,841This ZIP15,841
Households4,949This ZIP4,949
Housing units5,410This ZIP5,410
Median age37.3This ZIP37.3California37.9US 38.9
Median household income$115,007This ZIP$115,007California$99,122US $80,734
Median home value$893,600This ZIP$893,600California$734,700US $332,700
Median gross rent$2,426This ZIP$2,426California$2,036US $1,413
Bachelor's degree or higher27.4%This ZIP27.4%
Mean commute32.5 minThis ZIP32.5 min
Population density103.2 / sq miThis ZIP103.2 / sq mi

Business and tax activity

Business establishments589This ZIP589
Employees21,820This ZIP21,820
Annual payroll$1,121,450,000This ZIP$1,121,450,000
Tax returns filed6,350This ZIP6,350
Total adjusted gross income$722,292,000This ZIP$722,292,000

Land area

Land area153.47 sq miThis ZIP153.47 sq mi
Water area2.81 sq miThis ZIP2.81 sq mi

Counties 95304 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
San Joaquin County 100.0%
Stanislaus County 0.0%

Other place names in 95304

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

ZIP codes near 95304

ZIPCityDistance
95378 Tracy, CA 2.8 mi
95376 Tracy, CA 4.8 mi
95377 Tracy, CA 7.4 mi
95385 Vernalis, CA 8.8 mi
95337 Manteca, CA 8.9 mi
95330 Lathrop, CA 9.8 mi
95387 Westley, CA 11.5 mi
95391 Tracy, CA 13.7 mi
95231 French Camp, CA 14.2 mi
95336 Manteca, CA 14.3 mi

Find every ZIP code within 10 miles of 95304 →

Questions about this ZIP code

Where is ZIP code 95304?

95304 is in Tracy, California, in San Joaquin County, part of the Stockton-Lodi, CA metropolitan area. Its published point location is 37.6806, -121.3816.

What county is 95304 in?

95304 spans 2 counties: San Joaquin County and Stanislaus County. Most of it falls in San Joaquin County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 95304?

Tracy uses area codes 209 and 350, from NANPA's telephone records.

What time zone is 95304 in?

95304 uses America/Los_Angeles.

How many people live in 95304?

About 15,841 people live in ZIP code 95304, in 4,949 households, at 103.2 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 95304?

$115,007 a year, against $99,122 across California.

What ZIP codes are near 95304?

The closest are 95378 (2.8 mi), 95376 (4.8 mi), 95377 (7.4 mi), 95385 (8.8 mi) and 95337 (8.9 mi).

Is 95304 a PO Box ZIP code?

95304 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “95304 ZIP Code — Tracy, California (San Joaquin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/95304

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