California Broadband Data
California is a high-volume Form 477 filing book: 4,251,743 deployment records across 158 providers, with a satellite-led mix and 27.2% of filings at ≥100 Mbps advertised max.
Data updated June 2026
4,251,743 Form 477 records, upper third of 56 states/territories (≥ 1,310,136)
California at a glance
In California, 49.2% of Form 477 records are satellite and 3.3% are fiber, a satellite-led high-volume book (4,251,743 records).
- 3.3%
- fiber share (below the 4.3% national share)
- 27.2%
- filings ≥100 Mbps max (+2.6 pp vs 24.6% national)
- 49.2%
- satellite share - the dominant category
- widest footprint - 745,276 records
Shares are the percentage of this state's Form 477 deployment records using each technology category. Speed tiers are max-advertised download buckets, not measured retail speeds.
California broadband livability score
A single 0-100 verdict combining California's standing on 3 FCC Form 477-derived measures against every other tracked state and territory. A missing measure would drop out and redistribute its weight rather than deflate the score, not exercised on this build, since California reports all three.
58/100
Percentile-weighted across 3 of 3 measures
- Average download speed
- C 145 Mbps
55th percentile of 56 tracked
- Fiber availability
- D 3.3 %
36th percentile of 56 tracked
- Provider competition
- A 158.0 providers
96th percentile of 56 tracked
California's ≥100 Mbps share tracks near the national Form 477 mix
On this high-volume book, 27.2% of max-advertised-download filings sit at ≥100 Mbps (giga + gigabit buckets), versus 24.6% across every state_speed_tiers row (+2.6 pp).
- CA ≥100 Mbps share
- 27.2%
- All-state ≥100 Mbps share
- 24.6%
- CA vs national
- +2.6 pp
- CA avg max advertised
- 145 Mbps
Derivation: CA state_speed_tiers row vs SUM(state_speed_tiers); maxaddown buckets, not address-level availability or retail speed tests.
California vs all states by provider count
Where this state's Form 477 filer count sits among every state and territory on PlainBroadband
158 3rd of 56 higher than 53 of 56 states
States, banded by distinct broadband providers filing Form 477
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FCC Form 477 fixed broadband deployment · June 2020
Technology Breakdown
California broadband technologies by reported deployment records
FCC Form 477 fixed broadband deployment data (June 2020 status)
Full technology detail
| # | Technology | Records |
|---|---|---|
| 1 | Satellite | 2,093,119 |
| 2 | Terrestrial Fixed Wireless | 627,511 |
| 3 | Cable | 422,718 |
| 4 | ADSL2+ | 383,081 |
| 5 | DSL | 369,936 |
| 6 | VDSL | 202,304 |
| 7 | Fiber | 138,663 |
| 8 | Other Copper | 13,961 |
| 9 | Symmetric DSL | 442 |
| 10 | Other | 8 |
Who Reports the Most in California
The providers carrying the largest share of California's Form 477 deployment records. AT&T Inc. leads with 745,276 records.
Top providers in California by reported deployment records
FCC Form 477 fixed broadband deployment data (June 2020 status)
Full Provider List - California
Showing top 50 of 158 providers.
High-volume peers near California
High-volume peers for California: states with similar filer counts and similar total deployment records (provider floor ≥10, record floor ≥10,000).
Similar provider count
Nearest states by FCC filers reporting (158 here).
Similar deployment-record total
Nearest states by summed Form 477 records (4,251,743 here), excluding the filer-count set.
Disclaimer: Data from FCC Form 477. For informational purposes only. Coverage percentages are based on provider filings and may overstate actual availability at specific addresses. Speed figures represent maximum advertised speeds, not guaranteed performance. Always verify availability directly with providers.
Frequently Asked Questions
- Why does California show so many Form 477 deployment records?
- California has 4,251,743 deployment records from 158 providers, upper third of the 56-state corpus (≥ 1,310,136). Dense books usually mix large cable/fiber footprints with satellite overlays.
- How does California's ≥100 Mbps advertised share compare nationally?
- 27.2% of California's Form 477 filings advertise ≥100 Mbps max download, versus 24.6% nationally (+2.6 pp). Tiers come from state_speed_tiers maxaddown buckets, not retail speed tests.
- What broadband technologies dominate California's filings?
- satellite-led mix: fiber 3.3%, cable 9.9%, DSL 22.8%, fixed wireless 14.8%, satellite 49.2% of Form 477 records.
Read our methodology - how this data is sourced, computed, and verified.
Read with this state
- Illinois (143 filers)
- Ohio (129 filers)
- Missouri (123 filers)
- Minnesota (115 filers)
- Mix reading guide →
What to do with California's footprint
Provider count and record volume describe who files here, not what any one address can get.
- AT&T Inc. leads California's filings with 745,276 records. Check its footprint across every other state it serves. AT&T Inc. profile
- Compare against Illinois, a similarly-sized state by provider count. Compare to Illinois
- Find your own speed tier and what technology mix typically delivers it. Speed tier finder
Figures are FCC Form 477 fixed-deployment data as of June 2020, the final Form 477 release, self-reported by census block. For current, address-level availability, use the FCC National Broadband Map.
State-level figures reflect reported provider footprint, not a real-time or address-level availability check.