Network Regions

Regional Interactive Network Map
Data

The Middle-Mile Broadband Network is broken up into five regions across the state:

See the maps below to view which counties each region covers. View the table below to check on network construction progress within each region.

Information regarding the Last Mile Federal Funding Account (FFA) can be found on the California Public Utilities Commission’s website.

Map of California showing infrastructure construction status in the Northern, Capital, Central Valley, Los Angeles, and Southern regions. Blue lines indicate pre-construction, orange lines show Installation in progress, and green lines mark ready-to-connect sections.
MMBN Regions: Northern, Capital, Central Valley, Los Angeles, and Southern
Statewide Regional Network Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Green lines: Ready-to-Connect
  • Peach color polygon: Northern Region
  • Cyan color polygon: Capital Region
  • Pink color polygon: Central Valley Region
  • Periwinkle color polygon: Los Angeles Region
  • Yellow color polygon: Southern Region
Map of the Northern Region in California showing infrastructure construction status. Blue lines indicate pre-construction, orange lines show Installation in progress, and lavender colored polygons mark FFA awardees planning to connect.
Northern Region Counties: Butte, Colusa, Del Norte, El Dorado, Glenn, Humboldt, Lake, Lassen, Mendocino, Modoc, Nevada, Placer, Plumas, Sacramento, Shasta, Sierra, Siskiyou, Sutter, Tehama, Trinity, Yolo, and Yuba
Northern Region Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Outline in black dash polygon: County Boundary
  • Lavender color polygon: FFA Awardees Planning to Connect
Map of the Capital Region in California showing infrastructure construction status. Blue lines indicate pre-construction, orange lines show Installation in progress, green lines mark ready-to-connect sections, and lavender colored polygons mark FFA awardees planning to connect.
Capital Region Counties: Alameda, Alpine, Amador, Calaveras, Contra Costa, Marin, Mariposa, Merced, Mono, Napa, San Francisco, San Joaquin, San Mateo, Santa Clara, Solano, Sonoma, Stanislaus, and Tuolumne
Capital Region Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Green lines: Ready-to-Connect
  • Outline in black dash polygon: County Boundary
  • Lavender color polygon: FFA Awardees Planning to Connect
Map of the Central Valley Region in California showing infrastructure construction status. Blue lines indicate pre-construction, orange lines show Installation in progress, green lines mark ready-to-connect sections, and lavender colored polygons mark FFA awardees planning to connect.
Central Valley Region Counties: Fresno, Inyo, Kern, Kings, Madera, Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, and Tulare
Central Valley Region Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Green lines: Ready-to-Connect
  • Outline in black dash polygon: County Boundary
  • Lavender color polygon: FFA Awardees Planning to Connect
Map of the Los Angeles Region in California showing infrastructure construction status. Blue lines indicate pre-construction, orange lines show Installation in progress, and lavender colored polygons mark FFA awardees planning to connect.
Los Angeles Region Counties: Los Angeles, Orange, and Ventura
Los Angeles Region Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Outline in black dash polygon: County Boundary
  • Lavender color polygon: FFA Awardees Planning to Connect
Map of the Southern Region in California showing infrastructure construction status. Blue lines indicate pre-construction, orange lines show Installation in progress, green lines mark ready-to-connect sections, and lavender colored polygons mark FFA awardees planning to connect.
Southern Region Counties: Imperial, Riverside, San Bernardino, and San Diego
Southern Region Map Legend Guide:
  • Blue lines: Pre-Construction
  • Orange lines: Installation
  • Green lines: Ready-to-Connect
  • Outline in black dash polygon: County Boundary
  • Lavender color polygon: FFA Awardees Planning to Connect

Network Miles by Region

Table Description:
  • Region: Location of the network.
  • Pre-Construction Miles: The activities are design, engineering, and permitting.
  • Installation Miles: In the Installation status, the following activities are performed: Conduit Installation, Vault Placement, Fiber Pulling, Splicing, Hub Placement, Power Connection, and Electronics Installation. 
  • Ready-to-Connect Miles: In the Ready-to-Connect status, the following activities are performed: the network service center is established. Network testing occurs to confirm that segment(s) is operational and secure.
  • Total Miles: Total network miles for region.
RegionPre-Construction MilesInstallation MilesReady-to-Connect MilesTotal Miles
Northern1,199.71,503.302,703.0
Capital725.1748.9175.31,649.3
Central Valley393.41,405.6178.71,977.7
Los Angeles176.7441.60618.3
Southern292.2899.369.01,260.5
Grand Total Miles2,787.14,998.7423.08,208.8

Note: Installation miles reflect segments where physical construction is actively underway. In any given month, additional miles may have been permitted by partners who have not yet broken ground. Those miles will be reflected here as construction begins.

Updated May 26, 2026

Regional Data

Construction Regions – Download a CSV, Shapefile, GeoJSON, and/or KML data file of the current network construction progress within each region.