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 — PREFIX/923

ZIP codes starting with 923

ZIP codes
74
States
CA
Largest city
Fontana, CA
Population
1,220,222

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 923xx

ZIP codes starting with 923
ZIP City Type Population Median income Median home
92301 Adelanto , CA Standard 38,577 $68,676 $348,100
92304 Amboy , CA Standard 0 — —
92305 Angelus Oaks , CA Standard 533 $145,536 $559,900
92307 Apple Valley , CA Standard 41,180 $77,106 $428,400
92308 Apple Valley , CA Standard 42,709 $66,568 $383,600
92309 Baker , CA Standard 343 — —
92310 Fort Irwin , CA Standard 8,419 $76,107 —
92311 Barstow , CA Standard 33,954 $61,862 $246,400
92312 Barstow , CA No street area — — —
92313 Grand Terrace , CA Standard 13,078 $83,628 $517,600
92314 Big Bear City , CA Standard 9,334 $74,910 $457,200
92315 Big Bear Lake , CA Standard 5,215 $77,436 $590,000
92316 Bloomington , CA Standard 32,765 $83,587 $474,100
92317 Blue Jay , CA Standard 916 $99,103 $571,900
92318 Bryn Mawr , CA No street area — — —
92320 Calimesa , CA Standard 10,902 $87,181 $446,300
92321 Cedar Glen , CA Standard 724 $123,688 $641,400
92322 Cedarpines Park , CA Standard 770 $149,119 $588,200
92323 Cima , CA No street area — — —
92324 Colton , CA Standard 57,365 $71,078 $445,100
92325 Crestline , CA Standard 9,065 $70,563 $386,700
92327 Daggett , CA Standard 576 — —
92328 Death Valley , CA Standard 725 $94,375 $77,800
92329 Phelan , CA No street area — — —
92331 Fontana , CA No street area — — —
92332 Essex , CA Standard 105 — $370,800
92333 Fawnskin , CA Standard 302 — $413,300
92334 Fontana , CA No street area — — —
92335 Fontana , CA Standard 97,511 $77,949 $462,400
92336 Fontana , CA Standard 105,517 $123,363 $627,700
92337 Fontana , CA Standard 36,026 $107,678 $573,000
92338 Ludlow , CA Standard 0 — —
92339 Forest Falls , CA Standard 1,302 $77,167 $492,200
92340 Hesperia , CA No street area — — —
92341 Green Valley Lake , CA Standard 406 $97,273 $366,700
92342 Helendale , CA Standard 7,606 $115,058 $378,900
92344 Hesperia , CA Standard 21,349 $98,071 $482,500
92345 Hesperia , CA Standard 88,706 $69,485 $400,800
92346 Highland , CA Standard 56,179 $85,163 $499,200
92347 Hinkley , CA Standard 766 $58,833 $194,700
92350 Loma Linda , CA Standard 344 — —
92352 Lake Arrowhead , CA Standard 6,246 $105,753 $694,600
92354 Loma Linda , CA Standard 22,051 $83,847 $564,400
92356 Lucerne Valley , CA Standard 6,543 $54,923 $269,900
92357 Loma Linda , CA No street area — — —
92358 Lytle Creek , CA Standard 672 $86,394 $479,800
92359 Mentone , CA Standard 9,284 $77,846 $431,200
92363 Needles , CA Standard 5,531 $40,068 $163,900
92364 Nipton , CA Standard 7 — —
92365 Newberry Springs , CA Standard 2,192 $67,600 $183,300
92366 Mountain Pass , CA No street area — — —
92368 Oro Grande , CA Standard 906 $80,938 $359,800
92369 Patton , CA Standard 2,575 — —
92371 Phelan , CA Standard 21,580 $78,986 $387,000
92372 Pinon Hills , CA Standard 5,149 $66,471 $459,400
92373 Redlands , CA Standard 35,257 $101,271 $765,700
92374 Redlands , CA Standard 45,262 $102,813 $551,600
92375 Redlands , CA No street area — — —
92376 Rialto , CA Standard 84,394 $79,675 $463,300
92377 Rialto , CA Standard 20,814 $116,223 $582,900
92378 Rimforest , CA Standard 315 $105,294 $461,500
92382 Running Springs , CA Standard 5,215 $81,493 $389,300
92384 Shoshone , CA Standard 18 — —
92385 Skyforest , CA Standard 198 — $560,500
92386 Sugarloaf , CA Standard 2,042 $50,694 $458,600
92389 Tecopa , CA Standard 201 — $113,800
92391 Twin Peaks , CA Standard 2,254 $81,789 $340,500
92392 Victorville , CA Standard 65,429 $87,681 $410,100
92393 Victorville , CA No street area — — —
92394 Victorville , CA Standard 41,614 $78,466 $385,400
92395 Victorville , CA Standard 47,375 $62,102 $375,400
92397 Wrightwood , CA Standard 5,854 $77,250 $478,000
92398 Yermo , CA Standard 2,609 $59,888 $311,500
92399 Yucaipa , CA Standard 55,366 $92,440 $511,200

Cite this page

zipcodes.pro. “ZIP codes starting with 923.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/923

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