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 — RANKINGS/CA/SMALLEST-AREA

Smallest ZIP Codes in California by Land Area

What this measures. Land area of the Census tabulation area, smallest first. These are almost always dense urban ZIP codes covering a few city blocks. Source: Census Gazetteer, data release 2026-10-12.

# ZIP City County Land area
1 91046 Verdugo City Los Angeles 0.01 sq mi
2 95929 Chico Butte 0.01 sq mi
3 90079 Los Angeles Los Angeles 0.01 sq mi
4 95435 Finley Lake 0.01 sq mi
5 95309 Chinese Camp Tuolumne 0.02 sq mi
6 95486 Villa Grande Sonoma 0.02 sq mi
7 90747 Carson Los Angeles 0.02 sq mi
8 93408 San Luis Obispo San Luis Obispo 0.02 sq mi
9 90831 Long Beach Los Angeles 0.02 sq mi
10 92132 San Diego San Diego 0.03 sq mi
11 95978 Stirling City Butte 0.04 sq mi
12 90840 Long Beach Los Angeles 0.04 sq mi
13 93670 Yettem Tulare 0.05 sq mi
14 95604 Auburn Placer 0.05 sq mi
15 95419 Camp Meeker Sonoma 0.07 sq mi
16 92415 San Bernardino San Bernardino 0.07 sq mi
17 92350 Loma Linda San Bernardino 0.07 sq mi
18 92134 San Diego San Diego 0.08 sq mi
19 94104 San Francisco San Francisco 0.08 sq mi
20 92147 San Diego San Diego 0.09 sq mi
21 94188 San Francisco San Francisco 0.09 sq mi
22 92161 San Diego San Diego 0.09 sq mi
23 93227 Goshen Tulare 0.09 sq mi
24 91210 Glendale Los Angeles 0.10 sq mi
25 95211 Stockton San Joaquin 0.10 sq mi
26 93741 Fresno Fresno 0.12 sq mi
27 90743 Surfside Orange 0.12 sq mi
28 95431 Eldridge Sonoma 0.12 sq mi
29 96078 Proberta Tehama 0.12 sq mi
30 93962 Spreckels Monterey 0.12 sq mi
31 92092 La Jolla San Diego 0.13 sq mi
32 90071 Los Angeles Los Angeles 0.14 sq mi
33 90052 Los Angeles Los Angeles 0.14 sq mi
34 90639 La Mirada Los Angeles 0.14 sq mi
35 95053 Santa Clara Santa Clara 0.15 sq mi
36 90506 Torrance Los Angeles 0.16 sq mi
37 94575 Moraga Contra Costa 0.16 sq mi
38 90822 Long Beach Los Angeles 0.16 sq mi
39 92697 Irvine Orange 0.16 sq mi
40 90742 Sunset Beach Orange 0.17 sq mi
41 91125 Pasadena Los Angeles 0.18 sq mi
42 95041 Mount Hermon Santa Cruz 0.19 sq mi
43 95675 River Pines Amador 0.20 sq mi
44 93943 Monterey Monterey 0.20 sq mi
45 92662 Newport Beach Orange 0.21 sq mi
46 91371 Woodland Hills Los Angeles 0.21 sq mi
47 92182 San Diego San Diego 0.21 sq mi
48 93666 Sultana Tulare 0.21 sq mi
49 95736 Weimar Placer 0.23 sq mi
50 95221 Altaville Calaveras 0.23 sq mi

Showing the top 50 of 1,802 ZIP codes in California that have this figure and meet the threshold above. 91046 ranks 1st at 0.01 sq mi, against 0.23 sq mi in 50th place.

Other rankings for California

Cite this page

zipcodes.pro. “Smallest ZIP Codes in California by Land Area.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ca/smallest-area

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