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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/95403

95403

ZIP 95403 is in Santa Rosa, California, in Sonoma County; area codes 707 and 369; Pacific time. Santa Rosa has 8 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Sonoma
Population
45,806
Coordinates
38.5037, -122.7541
☼ Live from 95403 — Santa Rosa, CA

Weather right now

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Local time: —

Where 95403 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 95403
  • 🔢 Type 95403 into a pocket calculator and turn it upside down: EOhSG — not quite a word, sorry.
  • ➕ As a number, 95,403 = 3 × 7 × 7 × 11 × 59. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010010101011
  • 🏠 Its numerical neighbours: 95402 (Santa Rosa, CA, 5 mi away) and 95404 (Santa Rosa, CA, 4 mi away).
  • 🔄 Backwards, 95403 becomes 30459 — and that is a real ZIP code: Statesboro, GA, 2,324 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, 5,399 miles away.
  • 🧭 Farther south than 55% of all ZIP codes, and farther west than 97%.
  • 🎯1,294 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 95403 and you would come out at 38.50°S, 57.25°E — 986 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 28m.
  • 📏 At 21.5 square miles of land, 95403 is bigger than 39% of ZIP codes — room for about 16 Central Parks.
🌙 The sky over 95403 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population45,806This ZIP45,806
Households16,823This ZIP16,823
Housing units17,832This ZIP17,832
Median age40.2This ZIP40.2California37.9US 38.9
Median household income$98,191This ZIP$98,191California$99,122US $80,734
Median home value$693,000This ZIP$693,000California$734,700US $332,700
Median gross rent$2,275This ZIP$2,275California$2,036US $1,413
Bachelor's degree or higher29.3%This ZIP29.3%
Mean commute21.8 minThis ZIP21.8 min
Population density2,126.6 / sq miThis ZIP2,126.6 / sq mi

Business and tax activity

Business establishments1,539This ZIP1,539
Employees27,022This ZIP27,022
Annual payroll$2,290,509,000This ZIP$2,290,509,000
Tax returns filed21,830This ZIP21,830
Total adjusted gross income$2,166,928,000This ZIP$2,166,928,000

Land area

Land area21.54 sq miThis ZIP21.54 sq mi
Water area0.04 sq miThis ZIP0.04 sq mi

Other place names in 95403

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

ZIP codes near 95403

ZIPCityDistance
95439 Fulton, CA 1.5 mi
95492 Windsor, CA 3.6 mi
95404 Santa Rosa, CA 3.8 mi
95401 Santa Rosa, CA 4.3 mi
95402 Santa Rosa, CA 5.0 mi
95406 Santa Rosa, CA 5.0 mi
95405 Santa Rosa, CA 6.5 mi
95407 Santa Rosa, CA 7.5 mi
95444 Graton, CA 7.9 mi
95473 Sebastopol, CA 7.9 mi

Find every ZIP code within 10 miles of 95403 →

Questions about this ZIP code

Where is ZIP code 95403?

95403 is in Santa Rosa, California, in Sonoma County, part of the Santa Rosa-Petaluma, CA metropolitan area. Its published point location is 38.5037, -122.7541.

What county is 95403 in?

95403 lies in Sonoma County.

What area code is 95403?

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

What time zone is 95403 in?

95403 uses America/Los_Angeles.

How many people live in 95403?

About 45,806 people live in ZIP code 95403, in 16,823 households, at 2,126.6 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 95403?

$98,191 a year, against $99,122 across California.

What ZIP codes are near 95403?

The closest are 95439 (1.5 mi), 95492 (3.6 mi), 95404 (3.8 mi), 95401 (4.3 mi) and 95402 (5 mi).

Is 95403 a PO Box ZIP code?

95403 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “95403 ZIP Code — Santa Rosa, California (Sonoma County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/95403

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