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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/94591

94591

ZIP 94591 is in Vallejo, California, mostly in Solano County; area codes 707 and 369; Pacific time. Vallejo has 4 ZIP codes; the others are 94589, 94590 and 94592.

Type
Standard
Time zone
America/Los_Angeles
County
Solano +1 more
Metro area
Vallejo, CA
Population
58,193
Coordinates
38.1272, -122.1969
☼ Live from 94591 — Vallejo, CA

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Where 94591 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 94591
  • 🔢 Type 94591 into a pocket calculator and turn it upside down: IGShG — not quite a word, sorry.
  • ➕ As a number, 94,591 = 7 × 13513. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101111111
  • 🏠 Its numerical neighbours: 94590 (Vallejo, CA, 4 mi away) and 94592 (Vallejo, CA, 5 mi away).
  • 🔄 Backwards, 94591 becomes 19549 — and that is a real ZIP code: Port Clinton, PA, 2,444 miles away.
  • 👥 22 other ZIP codes are made of exactly the same digits (15949, 19495, 19549, 19945, 19954, 49519, …). The farthest-flung twin is 19945 in Frankford, DE, 2,518 miles away.
  • 🧭 Farther south than 57% of all ZIP codes, and farther west than 96%.
  • 🎯1,270 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94591 and you would come out at 38.13°S, 57.80°E — 990 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 49m of daylight. Shortest: 9h 31m.
  • 📏 At 21.1 square miles of land, 94591 is bigger than 38% of ZIP codes — room for about 16 Central Parks.
🌙 The sky over 94591 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population58,193This ZIP58,193
Households20,040This ZIP20,040
Housing units20,838This ZIP20,838
Median age42.0This ZIP42.0California37.9US 38.9
Median household income$104,550This ZIP$104,550California$99,122US $80,734
Median home value$630,500This ZIP$630,500California$734,700US $332,700
Median gross rent$2,288This ZIP$2,288California$2,036US $1,413
Bachelor's degree or higher31.9%This ZIP31.9%
Mean commute35.3 minThis ZIP35.3 min
Population density2,758.4 / sq miThis ZIP2,758.4 / sq mi

Business and tax activity

Business establishments614This ZIP614
Employees6,918This ZIP6,918
Annual payroll$274,376,000This ZIP$274,376,000
Tax returns filed27,070This ZIP27,070
Total adjusted gross income$2,267,778,000This ZIP$2,267,778,000

Land area

Land area21.10 sq miThis ZIP21.10 sq mi
Water area0.06 sq miThis ZIP0.06 sq mi

Counties 94591 spans

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

CountyShare of this ZIP
Solano County 97.0%
Napa County 3.0%

Other place names in 94591

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

ZIP codes near 94591

ZIPCityDistance
94589 Vallejo, CA 2.9 mi
94590 Vallejo, CA 3.6 mi
94510 Benicia, CA 4.3 mi
94503 American Canyon, CA 4.4 mi
94592 Vallejo, CA 5.4 mi
94525 Crockett, CA 5.7 mi
94569 Port Costa, CA 5.7 mi
94572 Rodeo, CA 7.4 mi
94547 Hercules, CA 9.0 mi
94534 Fairfield, CA 9.0 mi

Find every ZIP code within 10 miles of 94591 →

Questions about this ZIP code

Where is ZIP code 94591?

94591 is in Vallejo, California, in Solano County, part of the Vallejo, CA metropolitan area. Its published point location is 38.1272, -122.1969.

What county is 94591 in?

94591 spans 2 counties: Solano County and Napa County. Most of it falls in Solano 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 94591?

Vallejo uses area codes 707 and 369, from NANPA's telephone records.

What time zone is 94591 in?

94591 uses America/Los_Angeles.

How many people live in 94591?

About 58,193 people live in ZIP code 94591, in 20,040 households, at 2,758.4 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 94591?

$104,550 a year, against $99,122 across California.

What ZIP codes are near 94591?

The closest are 94589 (2.9 mi), 94590 (3.6 mi), 94510 (4.3 mi), 94503 (4.4 mi) and 94592 (5.4 mi).

Is 94591 a PO Box ZIP code?

94591 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94591 ZIP Code — Vallejo, California (Solano County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94591

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