Internet providers and CGNAT by county
The 100 US counties with the most homes, each with the ISPs we track that report home service there (FCC Broadband Data Collection county summaries, Dec 31, 2025 filing), and whether they use CGNAT, offer static IPs or IPv6. For any other county, pick your state and county in the ISP finder.
Alabama
- Jefferson County (344,711 homes)
Arizona
- Maricopa County (2,123,304 homes)
- Pima County (530,869 homes)
California
- Los Angeles County (4,057,654 homes)
- San Diego County (1,380,746 homes)
- Orange County (1,285,937 homes)
- Riverside County (963,249 homes)
- San Bernardino County (832,401 homes)
- Santa Clara County (772,112 homes)
- Alameda County (709,337 homes)
- Sacramento County (658,130 homes)
- Contra Costa County (466,152 homes)
- San Francisco County (463,547 homes)
- Fresno County (387,642 homes)
- Kern County (343,057 homes)
- Ventura County (328,084 homes)
Colorado
- Denver County (397,593 homes)
- El Paso County (340,777 homes)
Connecticut
- Hartford County (415,702 homes)
- Fairfield County (412,178 homes)
- New Haven County (401,043 homes)
District of Columbia
- District of Columbia (385,672 homes)
Florida
- Miami-Dade County (1,204,698 homes)
- Broward County (937,193 homes)
- Palm Beach County (783,793 homes)
- Hillsborough County (701,594 homes)
- Orange County (656,888 homes)
- Pinellas County (562,671 homes)
- Duval County (525,684 homes)
- Lee County (479,649 homes)
- Polk County (392,684 homes)
- Brevard County (334,890 homes)
- Pasco County (331,969 homes)
Georgia
- Fulton County (561,138 homes)
- Gwinnett County (380,137 homes)
- DeKalb County (363,588 homes)
- Cobb County (345,510 homes)
Hawaii
- Honolulu County (391,508 homes)
Illinois
- Cook County (2,466,502 homes)
- DuPage County (402,586 homes)
Indiana
- Marion County (480,853 homes)
Kentucky
- Jefferson County (390,934 homes)
Maryland
- Montgomery County (423,065 homes)
- Prince George's County (391,470 homes)
- Baltimore County (373,636 homes)
Massachusetts
- Middlesex County (729,015 homes)
- Suffolk County (403,121 homes)
- Worcester County (387,316 homes)
- Essex County (361,794 homes)
- Norfolk County (323,129 homes)
Michigan
- Wayne County (857,832 homes)
- Oakland County (606,091 homes)
- Macomb County (399,660 homes)
Minnesota
- Hennepin County (627,772 homes)
Missouri
- St. Louis County (484,744 homes)
- Jackson County (366,099 homes)
Nevada
- Clark County (1,033,024 homes)
New Jersey
- Bergen County (406,094 homes)
- Essex County (359,915 homes)
- Middlesex County (353,709 homes)
- Hudson County (333,700 homes)
New Mexico
- Bernalillo County (330,900 homes)
New York
- Kings County (1,159,287 homes)
- New York County (1,012,968 homes)
- Queens County (977,982 homes)
- Suffolk County (637,642 homes)
- Bronx County (582,772 homes)
- Nassau County (523,703 homes)
- Erie County (475,058 homes)
- Westchester County (428,774 homes)
- Monroe County (365,759 homes)
North Carolina
- Wake County (558,013 homes)
- Mecklenburg County (557,788 homes)
Ohio
- Cuyahoga County (657,685 homes)
- Franklin County (642,253 homes)
- Hamilton County (407,880 homes)
Oklahoma
- Oklahoma County (401,762 homes)
- Tulsa County (333,125 homes)
Oregon
- Multnomah County (419,329 homes)
Pennsylvania
- Philadelphia County (798,578 homes)
- Allegheny County (661,648 homes)
- Montgomery County (361,330 homes)
Tennessee
- Shelby County (441,918 homes)
- Davidson County (413,798 homes)
Texas
- Harris County (2,153,364 homes)
- Dallas County (1,179,986 homes)
- Tarrant County (950,881 homes)
- Bexar County (903,617 homes)
- Travis County (708,052 homes)
- Collin County (507,114 homes)
- Denton County (428,130 homes)
- El Paso County (358,317 homes)
- Hidalgo County (354,405 homes)
- Fort Bend County (349,536 homes)
Utah
- Salt Lake County (513,233 homes)
Virginia
- Fairfax County (471,648 homes)
Washington
- King County (1,102,898 homes)
- Pierce County (408,257 homes)
- Snohomish County (366,911 homes)
Wisconsin
- Milwaukee County (471,009 homes)
Source: FCC Broadband Data Collection. · ISPs by state