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zipcodes.pro — ZIP/94931

94931

ZIP 94931 is Cotati, California, in Sonoma County; area codes 707 and 369; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Sonoma
Population
9,487
Coordinates
38.3252, -122.7170
☼ Live from 94931 — Cotati, CA

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Where 94931 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 94931
  • 🔢 Type 94931 into a pocket calculator and turn it upside down: IEGhG — not quite a word, sorry.
  • ➕ As a number, 94,931 = 59 × 1609. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111001011010011
  • 🏠 Its numerical neighbours: 94930 (Fairfax, CA, 25 mi away) and 94933 (Forest Knolls, CA, 21 mi away).
  • 🔄 Backwards, 94931 becomes 13949, which is not a ZIP code at all.
  • 👥 18 other ZIP codes are made of exactly the same digits (19493, 19934, 19943, 34991, 39149, 39194, …). The farthest-flung twin is 34991 in Palm City, FL, 2,560 miles away.
  • 🧭 Farther south than 56% of all ZIP codes, and farther west than 97%.
  • 🎯1,295 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94931 and you would come out at 38.33°S, 57.28°E — 995 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 29m.
  • 📏 At 7.7 square miles of land, 94931 is bigger than 24% of ZIP codes — room for about 5.9 Central Parks.
🌙 The sky over 94931 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population9,487This ZIP9,487
Households4,072This ZIP4,072
Housing units4,134This ZIP4,134
Median age39.2This ZIP39.2California37.9US 38.9
Median household income$101,994This ZIP$101,994California$99,122US $80,734
Median home value$820,000This ZIP$820,000California$734,700US $332,700
Median gross rent$1,913This ZIP$1,913California$2,036US $1,413
Bachelor's degree or higher36.1%This ZIP36.1%
Mean commute27.8 minThis ZIP27.8 min
Population density1,226.5 / sq miThis ZIP1,226.5 / sq mi

Business and tax activity

Business establishments324This ZIP324
Employees3,390This ZIP3,390
Annual payroll$213,643,000This ZIP$213,643,000
Tax returns filed4,780This ZIP4,780
Total adjusted gross income$459,002,000This ZIP$459,002,000

Land area

Land area7.74 sq miThis ZIP7.74 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 94931

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

ZIP codes near 94931

ZIPCityDistance
94926 Rohnert Park, CA 1.3 mi
94927 Rohnert Park, CA 1.3 mi
94928 Rohnert Park, CA 1.9 mi
94951 Penngrove, CA 3.9 mi
95407 Santa Rosa, CA 5.1 mi
94999 Petaluma, CA 5.1 mi
94952 Petaluma, CA 6.7 mi
94953 Petaluma, CA 7.7 mi
94955 Petaluma, CA 7.7 mi
94975 Petaluma, CA 7.7 mi

Find every ZIP code within 10 miles of 94931 →

Questions about this ZIP code

Where is ZIP code 94931?

94931 is in Cotati, California, in Sonoma County, part of the Santa Rosa-Petaluma, CA metropolitan area. Its published point location is 38.3252, -122.7170.

What county is 94931 in?

94931 lies in Sonoma County.

What area code is 94931?

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

What time zone is 94931 in?

94931 uses America/Los_Angeles.

How many people live in 94931?

About 9,487 people live in ZIP code 94931, in 4,072 households, at 1,226.5 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 94931?

$101,994 a year, against $99,122 across California.

What ZIP codes are near 94931?

The closest are 94926 (1.3 mi), 94927 (1.3 mi), 94928 (1.9 mi), 94951 (3.9 mi) and 95407 (5.1 mi).

Is 94931 a PO Box ZIP code?

94931 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94931 ZIP Code — Cotati, California (Sonoma County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94931

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