Ranking of California Counties By Percentage of Households with Household Income of Less than $40K in 2021 (ACS-5Yrs)
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of households in California with household income of less than $40k was 24.26%. Among all California counties, Trinity County had the highest percentage of households with household income of less than $40k (45.08%), followed by Imperial County (41.84%), and Modoc County (40.87%).
On the other hand, the following 3 counties had low percentages of households with household income of less than $40k: Santa Clara County (13.95%), San Mateo County (13.99%), and Marin County (15.59%).
The chart below shows the top 10 California counties with high household income, and the table below shows the ranking of all California counties.
You can also see similar information for other household income groups, for other states, as well as for the whole United States.
| Rank | County | Percentage of Households (%) |
|---|---|---|
| 1 | Trinity County | 45.08 |
| 2 | Imperial County | 41.84 |
| 3 | Modoc County | 40.87 |
| 4 | Siskiyou County | 39.91 |
| 5 | Mariposa County | 39.83 |
| 6 | Humboldt County | 39.64 |
| 7 | Tehama County | 39.51 |
| 8 | Lake County | 37.49 |
| 9 | Del Norte County | 36.99 |
| 10 | Colusa County | 36.29 |
| 11 | Butte County | 35.97 |
| 12 | Mendocino County | 35.87 |
| 13 | Glenn County | 35.08 |
| 14 | Kern County | 34.95 |
| 15 | Tulare County | 34.62 |
| 16 | Fresno County | 33.99 |
| 17 | Inyo County | 33.78 |
| 18 | Merced County | 33.14 |
| 19 | Plumas County | 32.95 |
| 20 | Shasta County | 32.67 |
| 21 | Yuba County | 32.60 |
| 22 | Lassen County | 32.40 |
| 23 | Sierra County | 32.23 |
| 24 | Madera County | 30.84 |
| 25 | Kings County | 30.37 |
| 26 | Tuolumne County | 30.08 |
| 27 | Amador County | 28.78 |
| 28 | Stanislaus County | 28.27 |
| 29 | Calaveras County | 27.58 |
| 30 | San Bernardino County | 27.45 |
| 31 | Nevada County | 27.37 |
| 32 | Los Angeles County | 27.35 |
| 33 | Yolo County | 27.20 |
| 34 | Sutter County | 27.18 |
| 35 | San Joaquin County | 26.39 |
| 36 | Riverside County | 25.98 |
| 37 | Sacramento County | 25.55 |
| 38 | San Luis Obispo County | 23.99 |
| 39 | Santa Barbara County | 22.48 |
| 40 | Alpine County | 22.35 |
| 41 | Monterey County | 22.22 |
| 42 | San Diego County | 21.98 |
| 43 | El Dorado County | 21.97 |
| 44 | San Francisco County | 20.69 |
| 45 | Mono County | 20.63 |
| 46 | Santa Cruz County | 20.61 |
| 47 | Sonoma County | 20.23 |
| 48 | Ventura County | 19.56 |
| 49 | Placer County | 19.42 |
| 50 | Orange County | 19.33 |
| 51 | Solano County | 19.14 |
| 52 | Napa County | 18.86 |
| 53 | Alameda County | 18.62 |
| 54 | Contra Costa County | 16.92 |
| 55 | San Benito County | 15.74 |
| 56 | Marin County | 15.59 |
| 57 | San Mateo County | 13.99 |
| 58 | Santa Clara County | 13.95 |