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/945

ZIP codes starting with 945

ZIP codes
93
States
CA
Largest city
Pittsburg, CA
Population
2,475,576

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 945xx

ZIP codes starting with 945
ZIP City Type Population Median income Median home
94501 Alameda , CA Standard 63,808 $127,906 $1,250,300
94502 Alameda , CA Standard 13,430 $180,938 $1,204,200
94503 American Canyon , CA Standard 21,841 $121,088 $697,400
94505 Discovery Bay , CA Standard 14,970 $146,480 $830,500
94506 Danville , CA Standard 27,055 $250,000+ $1,956,800
94507 Alamo , CA Standard 14,586 $250,000+ $2,000,000+
94508 Angwin , CA Standard 3,495 $116,667 $775,600
94509 Antioch , CA Standard 70,090 $86,196 $584,100
94510 Benicia , CA Standard 26,749 $121,204 $810,000
94511 Bethel Island , CA Standard 1,864 $74,972 $682,700
94512 Birds Landing , CA Standard 130 — —
94513 Brentwood , CA Standard 69,755 $142,223 $837,800
94514 Byron , CA Standard 1,953 $76,511 $735,600
94515 Calistoga , CA Standard 6,946 $94,464 $824,900
94516 Canyon , CA Standard 214 $113,333 $784,700
94517 Clayton , CA Standard 12,316 $168,921 $1,032,100
94518 Concord , CA Standard 27,345 $112,094 $859,000
94519 Concord , CA Standard 19,058 $122,418 $783,700
94520 Concord , CA Standard 37,381 $82,479 $601,000
94521 Concord , CA Standard 41,909 $125,899 $853,200
94522 Concord , CA No street area — — —
94523 Pleasant Hill , CA Standard 34,592 $142,586 $1,076,600
94524 Concord , CA No street area — — —
94525 Crockett , CA Standard 3,372 $110,899 $776,100
94526 Danville , CA Standard 32,584 $225,097 $1,677,700
94527 Concord , CA No street area — — —
94528 Diablo , CA Standard 1,049 $207,500 $2,000,000+
94529 Concord , CA No street area — — —
94530 El Cerrito , CA Standard 26,401 $128,529 $1,114,100
94531 Antioch , CA Standard 46,387 $120,927 $701,600
94533 Fairfield , CA Standard 78,805 $87,384 $542,200
94534 Fairfield , CA Standard 41,203 $140,198 $744,500
94535 Travis Afb , CA Standard 3,952 $83,879 —
94536 Fremont , CA Standard 70,619 $167,662 $1,287,800
94537 Fremont , CA No street area — — —
94538 Fremont , CA Standard 67,781 $147,301 $1,136,600
94539 Fremont , CA Standard 52,396 $243,552 $1,950,900
94540 Hayward , CA No street area — — —
94541 Hayward , CA Standard 67,139 $105,729 $812,000
94542 Hayward , CA Standard 14,871 $133,734 $1,148,000
94543 Hayward , CA No street area — — —
94544 Hayward , CA Standard 76,947 $107,785 $827,200
94545 Hayward , CA Standard 32,843 $114,356 $879,400
94546 Castro Valley , CA Standard 44,855 $128,385 $1,043,500
94547 Hercules , CA Standard 26,302 $129,397 $769,400
94548 Knightsen , CA Standard 832 $189,653 $959,900
94549 Lafayette , CA Standard 28,420 $234,516 $2,000,000+
94550 Livermore , CA Standard 49,873 $180,295 $1,202,500
94551 Livermore , CA Standard 37,885 $145,392 $978,500
94552 Castro Valley , CA Standard 14,506 $212,605 $1,394,300
94553 Martinez , CA Standard 48,643 $124,130 $825,900
94555 Fremont , CA Standard 37,501 $219,938 $1,376,600
94556 Moraga , CA Standard 15,998 $215,720 $1,659,600
94557 Hayward , CA No street area — — —
94558 Napa , CA Standard 63,657 $113,269 $890,500
94559 Napa , CA Standard 27,714 $105,188 $898,600
94560 Newark , CA Standard 46,903 $169,064 $1,142,800
94561 Oakley , CA Standard 46,368 $134,678 $659,800
94562 Oakville , CA Standard 0 — —
94563 Orinda , CA Standard 19,378 $250,000+ $1,866,500
94564 Pinole , CA Standard 18,761 $127,717 $718,600
94565 Pittsburg , CA Standard 100,488 $95,556 $583,800
94566 Pleasanton , CA Standard 44,222 $191,155 $1,656,900
94567 Pope Valley , CA Standard 668 $80,833 $471,400
94568 Dublin , CA Standard 70,803 $214,385 $1,317,100
94569 Port Costa , CA Standard 296 $38,929 $600,000
94570 Moraga , CA No street area — — —
94571 Rio Vista , CA Standard 10,974 $87,740 $490,200
94572 Rodeo , CA Standard 8,976 $91,484 $663,200
94573 Rutherford , CA Standard 84 $250,000+ —
94574 Saint Helena , CA Standard 7,457 $139,474 $1,637,800
94575 Moraga , CA Standard 975 — —
94576 Deer Park , CA Standard 103 $170,677 $986,100
94577 San Leandro , CA Standard 46,317 $108,772 $856,100
94578 San Leandro , CA Standard 41,769 $94,084 $823,000
94579 San Leandro , CA Standard 20,017 $99,040 $850,300
94580 San Lorenzo , CA Standard 29,420 $110,729 $846,700
94581 Napa , CA No street area — — —
94582 San Ramon , CA Standard 47,424 $214,677 $1,635,700
94583 San Ramon , CA Standard 39,583 $184,898 $1,383,600
94585 Suisun City , CA Standard 29,357 $94,740 $580,800
94586 Sunol , CA Standard 971 $204,931 $1,511,000
94587 Union City , CA Standard 67,464 $133,715 $1,104,900
94588 Pleasanton , CA Standard 34,328 $191,073 $1,384,300
94589 Vallejo , CA Standard 29,990 $92,735 $540,400
94590 Vallejo , CA Standard 37,128 $65,290 $530,500
94591 Vallejo , CA Standard 58,193 $104,550 $630,500
94592 Vallejo , CA Standard 1,049 $115,536 $772,000
94595 Walnut Creek , CA Standard 16,988 $100,552 $860,600
94596 Walnut Creek , CA Standard 23,417 $135,635 $1,277,800
94597 Walnut Creek , CA Standard 23,129 $132,063 $1,026,800
94598 Walnut Creek , CA Standard 27,206 $186,225 $1,339,900
94599 Yountville , CA Standard 3,348 $80,372 $808,900

Cite this page

zipcodes.pro. “ZIP codes starting with 945.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/945

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