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/94571

94571

ZIP 94571 is Rio Vista, California, mostly in Solano County; area code 707; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Solano +1 more
Metro area
Vallejo, CA
Population
10,974
Coordinates
38.1521, -121.7598
☼ Live from 94571 — Rio Vista, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 94571 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 94571
  • 🔢 Type 94571 into a pocket calculator and turn it upside down: ILShG — not quite a word, sorry.
  • ➕ As a number, 94,571 = 17 × 5563. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101101011
  • 🏠 Its numerical neighbours: 94570 (Moraga, CA, 28 mi away) and 94572 (Rodeo, CA, 27 mi away).
  • 🔄 Backwards, 94571 becomes 17549 — and that is a real ZIP code: Martindale, PA, 2,424 miles away.
  • 👥 39 other ZIP codes are made of exactly the same digits (15479, 17549, 17945, 17954, 19457, 19475, …). The farthest-flung twin is 19457 in Parker Ford, PA, 2,449 miles away.
  • 🧭 Farther south than 57% of all ZIP codes, and farther west than 95%.
  • 🎯1,247 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94571 and you would come out at 38.15°S, 58.24°E — 975 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 30m.
  • 📏 At 109.1 square miles of land, 94571 is bigger than 80% of ZIP codes — room for about 83 Central Parks.
🌙 The sky over 94571 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,974This ZIP10,974
Households5,219This ZIP5,219
Housing units5,361This ZIP5,361
Median age61.2This ZIP61.2California37.9US 38.9
Median household income$87,740This ZIP$87,740California$99,122US $80,734
Median home value$490,200This ZIP$490,200California$734,700US $332,700
Median gross rent$1,629This ZIP$1,629California$2,036US $1,413
Bachelor's degree or higher30.2%This ZIP30.2%
Mean commute39.6 minThis ZIP39.6 min
Population density100.6 / sq miThis ZIP100.6 / sq mi

Business and tax activity

Business establishments146This ZIP146
Employees1,339This ZIP1,339
Annual payroll$82,807,000This ZIP$82,807,000
Tax returns filed5,740This ZIP5,740
Total adjusted gross income$482,314,000This ZIP$482,314,000

Land area

Land area109.10 sq miThis ZIP109.10 sq mi
Water area13.40 sq miThis ZIP13.40 sq mi

Counties 94571 spans

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

CountyShare of this ZIP
Solano County 81.9%
Sacramento County 18.1%

Other place names in 94571

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

ZIP codes near 94571

ZIPCityDistance
94512 Birds Landing, CA 3.7 mi
95690 Walnut Grove, CA 8.1 mi
95641 Isleton, CA 8.4 mi
94585 Suisun City, CA 10.1 mi
94511 Bethel Island, CA 11.1 mi
94509 Antioch, CA 11.4 mi
94561 Oakley, CA 11.6 mi
95680 Ryde, CA 11.6 mi
94535 Travis Afb, CA 12.7 mi
95686 Thornton, CA 13.0 mi

Find every ZIP code within 10 miles of 94571 →

Questions about this ZIP code

Where is ZIP code 94571?

94571 is in Rio Vista, California, in Solano County, part of the Vallejo, CA metropolitan area. Its published point location is 38.1521, -121.7598.

What county is 94571 in?

94571 spans 2 counties: Solano County and Sacramento 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 94571?

Rio Vista uses area code 707, from NANPA's telephone records.

What time zone is 94571 in?

94571 uses America/Los_Angeles.

How many people live in 94571?

About 10,974 people live in ZIP code 94571, in 5,219 households, at 100.6 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 94571?

$87,740 a year, against $99,122 across California.

What ZIP codes are near 94571?

The closest are 94512 (3.7 mi), 95690 (8.1 mi), 95641 (8.4 mi), 94585 (10.1 mi) and 94511 (11.1 mi).

Is 94571 a PO Box ZIP code?

94571 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “94571 ZIP Code — Rio Vista, California (Solano County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94571

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/94571.json

Underlying data is public domain or openly licensed — sources, vintages and licences.