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/91948

91948

ZIP 91948 is Mount Laguna, California, in San Diego County; area codes 619 and 858; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
San Diego
Population
93
Coordinates
32.8650, -116.4730
☼ Live from 91948 — Mount Laguna, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 91948 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 91948
  • 🔢 Type 91948 into a pocket calculator and turn it upside down: BhGIG — not quite a word, sorry.
  • ➕ As a number, 91,948 = 2 × 2 × 127 × 181. Its digits add up to 31, a total 799 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110011100101100
  • 🏠 Its numerical neighbours: 91946 (Lemon Grove, CA, 34 mi away) and 91950 (National City, CA, 39 mi away).
  • 🔄 Backwards, 91948 becomes 84919, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (18949, 19894, 48919, 49819, 49891, 49918, …). The farthest-flung twin is 18949 in Plumsteadville, PA, 2,328 miles away.
  • 🧭 Farther south than 85% of all ZIP codes, and farther west than 89%.
  • 🎯1,103 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91948 and you would come out at 32.86°S, 63.53°E — 953 miles from Port Louis, Mauritius, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 19m of daylight. Shortest: 9h 59m.
  • 📏 At 34.9 square miles of land, 91948 is bigger than 49% of ZIP codes — room for about 26 Central Parks.
🌙 The sky over 91948 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population93This ZIP93
Households55This ZIP55
Housing units95This ZIP95
Median age34.0This ZIP34.0California37.9US 38.9
Median household income$55,066This ZIP$55,066California$99,122US $80,734
Bachelor's degree or higher19.4%This ZIP19.4%
Population density2.7 / sq miThis ZIP2.7 / sq mi

Business and tax activity

Business establishments8This ZIP8
Employees28This ZIP28
Annual payroll$612,000This ZIP$612,000

Land area

Land area34.89 sq miThis ZIP34.89 sq mi
Water area0.06 sq miThis ZIP0.06 sq mi

Other place names in 91948

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

ZIP codes near 91948

ZIPCityDistance
91962 Pine Valley, CA 3.0 mi
91931 Guatay, CA 6.5 mi
91916 Descanso, CA 9.8 mi
91906 Campo, CA 14.3 mi
91901 Alpine, CA 15.2 mi
91905 Boulevard, CA 16.1 mi
91963 Potrero, CA 16.6 mi
92036 Julian, CA 16.7 mi
91903 Alpine, CA 17.2 mi
91935 Jamul, CA 21.2 mi

Find every ZIP code within 10 miles of 91948 →

Questions about this ZIP code

Where is ZIP code 91948?

91948 is in Mount Laguna, California, in San Diego County, part of the San Diego-Chula Vista-Carlsbad, CA metropolitan area. Its published point location is 32.8650, -116.4730.

What county is 91948 in?

91948 lies in San Diego County.

What area code is 91948?

Mount Laguna uses area codes 619 and 858, from NANPA's telephone records.

What time zone is 91948 in?

91948 uses America/Los_Angeles.

How many people live in 91948?

About 93 people live in ZIP code 91948, in 55 households, at 2.7 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 91948?

$55,066 a year, against $99,122 across California.

What ZIP codes are near 91948?

The closest are 91962 (3 mi), 91931 (6.5 mi), 91916 (9.8 mi), 91906 (14.3 mi) and 91901 (15.2 mi).

Is 91948 a PO Box ZIP code?

91948 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “91948 ZIP Code — Mount Laguna, California (San Diego County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91948

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/91948.json

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