--- title: "Area code 530: California, United States" url: "https://lookvalid.com/area-code/530.md" canonical_url: "https://lookvalid.com/area-code/530" last_updated: "2026-10-23" type: "reference" summary: "Area code 530 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California." --- # Area code 530: California, United States Area code 530 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California. NANPA lists 779 central office codes (prefixes) in use in area code 530, held by 55 holders across 131 rate centers. Pacific Bell holds the most prefixes, 181 (23%). 82% of the prefixes are pooled, which means their thousands-blocks can belong to different companies. The FCC unwanted-call data has 3,392 complaints on file for 2,419 numbers in 530, most often filed as "Unwanted Calls". These are consumer reports, not findings. ## Facts - In service since: 1997-11-01 - Time zone: Pacific (P) - Assigned overlays: 837 (2025-01-31) - Prefixes in use: 779 - Pooled prefixes: 640 (82%) - Rate centers: 131 - Companies holding prefixes: 55 - Assignment dates on file: 2001-01-25 to 2026-07-24 (234 prefixes) - ZIP codes in its places: 110 ## Rate centers | Rate center | Prefixes | Share | | --- | --- | --- | | CHICO | 64 | 8% | | REDDING | 59 | 8% | | MARYSVILLE | 52 | 7% | | AUBN MAIN | 38 | 5% | | DAVIS | 33 | 4% | | WOODLAND | 26 | 3% | | PLVL WEST | 25 | 3% | | GRVY MAIN | 23 | 3% | | 123 other rate centers | 459 | 59% | ## Carriers | Holder | Prefixes | Share | | --- | --- | --- | | Pacific Bell | 181 | 23% | | New Cingular Wireless PCS | 67 | 9% | | Onvoy | 63 | 8% | | Verizon Wireless | 53 | 7% | | Level 3 Communications | 50 | 6% | | T-Mobile USA | 47 | 6% | | 49 other carriers | 318 | 41% | A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. ## History - 1947-01-01: Area code 916, named as the parent of 530 in the NANPA report, was in service. - 1997-11-01: Area code 530 went into service. - 2025-01-31: Area code 837 went into service as an overlay in the same area as 530. ## Nearest area codes The area codes closest to 530, measured between the centers of the ZIP code places they serve, are 916 (about 67 miles), 707 (about 91 miles), 369 (about 92 miles), 279 (about 98 miles) and 415 (about 140 miles). ## ZIP codes 110 ZIP codes fall in places that have a rate center in this area code. The places with the most are Chico, CA (6 ZIP codes), Redding, CA (5 ZIP codes) and Davis, CA (3 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes. ## Complaints on file 3,392 complaints for 2,419 numbers. Numbers whose latest complaint falls in each year: - 2023: 198 - 2024: 114 - 2025: 84 ## Questions ### Where is area code 530? NANPA assigns area code 530 to California, United States. ### In which state does area code 530 sit? California. 530 is one of 41 area codes the NANPA table assigns to the state. ### Which places does area code 530 cover? The places with the most ZIP codes among the rate centers in 530 are Chico, CA, Redding, CA and Davis, CA. The rate center list on this page shows all of them. ### Who owns area code 530? NANPA assigns area codes. Within 530, Pacific Bell holds the most prefixes, 181 prefixes or 23%. ### Which time zone does 530 use? The NANPA NPA report lists the time zone for 530 as Pacific (P). ### What year did 530 enter service? The NANPA NPA report gives an in-service date of 1997-11-01, so 530 has been in use since 1997. ### Does area code 530 have an overlay? Yes. 837 (in service 2025-01-31) shares the same area with 530, so numbers from all of them are local to each other. ### Which area codes are nearest to 530? The area codes closest to 530, measured between the centers of the ZIP code places they serve, are 916 (about 67 miles), 707 (about 91 miles), 369 (about 92 miles), 279 (about 98 miles) and 415 (about 140 miles). ### How many prefixes does area code 530 have? NANPA's report dated 2026-10-17 lists 779 prefixes in service in 530, spread over 131 rate centers and 55 holders. ### Are there complaints about 530 numbers? The FCC data on file has 3,392 complaints for 2,419 numbers in 530. They are unverified consumer reports. A number with no complaints on file is not proven safe. Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).