94128
ZIP 94128 is in San Francisco, California, in San Mateo County; area codes 415 and 628; Pacific time. San Francisco has 51 ZIP codes in all.
- Type
- Standard
- Time zone
- America/Los_Angeles
- County
- San Mateo
- Metro area
- San Francisco-Oakland-Fremont, CA
- Population
- 0
- Coordinates
- 37.6220, -122.3838
Weather right now
Asking the National Weather Service…
Where 94128 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.
- 🔢 Type 94128 into a pocket calculator and turn it upside down: BZIhG — not quite a word, sorry.
- ➕ As a number, 94,128 = 2 × 2 × 2 × 2 × 3 × 37 × 53. Its digits add up to 24, a total 2,425 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10110111110110000 - 🏠 Its numerical neighbours: 94127 (San Francisco, CA, 9 mi away) and 94129 (San Francisco, CA, 13 mi away).
- 🔄 Backwards, 94128 becomes 82149, which is not a ZIP code at all.
- 👥 38 other ZIP codes are made of exactly the same digits (12489, 12498, 12849, 14892, 18249, 18924, …). The farthest-flung twin is 12849 in Middle Granville, NY, 2,571 miles away.
- 🧭 Farther south than 61% of all ZIP codes, and farther west than 96%.
- 🎯1,288 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 94128 and you would come out at 37.62°S, 57.62°E — 1,025 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 34m.
- 📏 At 3.4 square miles of land, 94128 is bigger than 15% of ZIP codes — room for about 2.5 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 0 |
|---|---|
| Households | 0 |
| Housing units | 0 |
| Population density | 0.0 / sq mi |
Business and tax activity
| Business establishments | 191This ZIP191 |
|---|---|
| Employees | 13,241This ZIP13,241 |
| Annual payroll | $905,356,000This ZIP$905,356,000 |
Land area
| Land area | 3.35 sq miThis ZIP3.35 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 94128
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 94128
| ZIP | City | Distance |
|---|---|---|
94030 | Millbrae, CA | 1.9 mi |
94083 | South San Francisco, CA | 2.6 mi |
94066 | San Bruno, CA | 2.7 mi |
94011 | Burlingame, CA | 2.8 mi |
94080 | South San Francisco, CA | 3.0 mi |
94010 | Burlingame, CA | 3.5 mi |
94401 | San Mateo, CA | 4.8 mi |
94005 | Brisbane, CA | 4.8 mi |
94044 | Pacifica, CA | 5.2 mi |
94014 | Daly City, CA | 5.9 mi |
Find every ZIP code within 10 miles of 94128 →
Questions about this ZIP code
Where is ZIP code 94128?
94128 is in San Francisco, California, in San Mateo County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.6220, -122.3838.
What county is 94128 in?
94128 lies in San Mateo County.
What area code is 94128?
San Francisco uses area codes 415 and 628, from NANPA's telephone records.
What time zone is 94128 in?
94128 uses America/Los_Angeles.
How many people live in 94128?
About 0 people live in ZIP code 94128. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 94128?
The closest are 94030 (1.9 mi), 94083 (2.6 mi), 94066 (2.7 mi), 94011 (2.8 mi) and 94080 (3 mi).
Is 94128 a PO Box ZIP code?
94128 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “94128 ZIP Code — San Francisco, California (San Mateo County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94128
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/94128.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.