List of counties in California

Complete List of Counties in California

California's counties span the entire state, from the northern reaches near Oregon to the southern border with Mexico. The counties vary greatly in size, population, and influence. Below is a complete list of all 58 counties in California, arranged alphabetically:

1. Alameda
2. Alpine
3. Amador
4. Butte
5. Calaveras
6. Colusa
7. Contra Costa
8. Del Norte
9. El Dorado
10. Fresno
11. Glenn
12. Humboldt
13. Imperial
14. Inyo
15. Kern
16. Kings
17. Lake
18. Lassen
19. Los Angeles
20. Madera
21. Marin
22. Mariposa
23. Mendocino
24. Merced
25. Modoc
26. Mono
27. Monterey
28. Napa
29. Nevada
30. Orange
31. Placer
32. Plumas
33. Riverside
34. Sacramento
35. San Benito
36. San Bernardino
37. San Diego
38. San Francisco
39. San Joaquin
40. San Luis Obispo
41. San Mateo
42. Santa Barbara
43. Santa Clara
44. Santa Cruz
45. Shasta
46. Sierra
47. Siskiyou
48. Solano
49. Sonoma
50. Stanislaus
51. Sutter
52. Tehama
53. Trinity
54. Tulare
55. Tuolumne
56. Ventura
57. Yolo
58. Yuba

Each of these counties plays a vital role in the administration of California. Local governments in the counties manage everything from public safety to transportation, public health, and land use. Additionally, counties are a source of significant influence in California politics, shaping the state’s policies and future.

The Top 5 Largest Counties in California by Area

California is a vast state, and its counties vary dramatically in size. While many counties are urbanized and densely populated, others are expansive, rural regions. Here are the five largest counties in California by area:

1. San Bernardino County

• Area: 20,105 square miles
• Location: Southern California
• Description: San Bernardino County is the largest county in California and one of the largest in the United States. This vast county covers much of Southern California and extends into the Mojave Desert. Despite its enormous size, much of the land is sparsely populated, with large portions of it designated as national forests and desert preserves.

2. Inyo County

• Area: 10,141 square miles
• Location: Eastern California
• Description: Inyo County, located in Eastern California, is famous for its stunning desert landscapes, mountains, and the presence of Death Valley National Park. Despite its large area, it has a relatively small population, as much of its land is sparsely populated or uninhabited.

3. Kern County

• Area: 8,161 square miles
• Location: Central California
• Description: Kern County lies in the central region of California and features a mix of rural farmland, desert landscapes, and urban areas like the city of Bakersfield. It’s a critical agricultural area, contributing significantly to California’s economy.

4. Los Angeles County

• Area: 4,083 square miles
• Location: Southern California
• Description: While Los Angeles County is not the largest in terms of land area, it is by far the most populous county in California. Known for the city of Los Angeles, Hollywood, and beautiful coastal regions, it is a global cultural and economic hub.

5. Riverside County

• Area: 7,303 square miles
• Location: Southern California
• Description: Riverside County is a large county that encompasses diverse landscapes, including desert, mountains, and agricultural land. The county also includes a significant portion of the Coachella Valley and is known for its growing suburban communities.

The Top 5 Richest Counties in California by Median Household Income

While California's counties differ significantly in terms of geographic features and population size, the state is home to several counties with high median household incomes, reflecting the economic prosperity of certain regions. Here are the five wealthiest counties in California based on median household income:

1. Santa Clara County

• Median Household Income: $115,000+
• Location: Silicon Valley
• Description: Santa Clara County, located in the heart of Silicon Valley, is the wealthiest county in California. Home to tech giants like Apple, Google, and Facebook, the county boasts some of the highest-paying jobs in the state, with significant income inequality due to the prominence of the tech industry.

2. San Mateo County

• Median Household Income: $114,000+
• Location: San Francisco Bay Area
• Description: San Mateo County is another Bay Area county with a high median household income, largely driven by its proximity to Silicon Valley and the growing tech industry. The county includes wealthy suburbs like Atherton and Hillsborough, which are home to many tech executives and entrepreneurs.

3. Marin County

• Median Household Income: $98,000+
• Location: North Bay Area
• Description: Marin County, located just across the Golden Gate Bridge from San Francisco, is one of the most affluent counties in California. Its residents enjoy a high standard of living, with expansive homes, beautiful natural surroundings, and a reputation for being an upscale place to live.

4. Orange County

• Median Household Income: $80,000+
• Location: Southern California
• Description: Orange County, which includes cities like Irvine, Anaheim, and Newport Beach, is known for its wealth, especially in areas like real estate and tourism. It is home to Disneyland Resort and numerous upscale communities, making it one of the wealthiest counties in Southern California.

5. Alameda County

• Median Household Income: $85,000+
• Location: San Francisco Bay Area
• Description: Alameda County, located in the East Bay of the San Francisco Bay Area, is also one of the wealthiest counties in California. The city of Berkeley and parts of Oakland contribute to the high median household income, driven by education, technology, and real estate.

Conclusion

California’s 58 counties offer a wide range of lifestyles, economic opportunities, and cultural experiences. The largest counties by area are generally less populated, with vast stretches of rural or desert land, while the wealthiest counties reflect the economic powerhouses of the state, particularly in tech, real estate, and other high-paying industries. Whether you’re interested in the expansive landscapes of rural counties like San Bernardino or Kern, or the affluence and innovation of Silicon Valley in Santa Clara and San Mateo, California offers something for everyone. Understanding the counties of California can help you navigate the state's complexity, whether for travel, relocation, or simply gaining a deeper appreciation of the Golden State.