All districts / CA-21
July 2026 · Congressional District
CA-21
Jim Costa
| Income group | Net income | Margin · Renter | Margin · Owner blended | Margin · Owner (mortgage) | Margin · Owner (paid off) | Rank |
|---|---|---|---|---|---|---|
| One adult | $1,947 | -$3,743 | -$3,364 | -$3,800 | -$2,530 | 416 of 435 |
| Two adults | $3,894 | -$4,344 | -$3,966 | -$4,402 | -$3,132 | 416 of 435 |
| Median household | $4,336 | -$2,091 | -$1,712 | -$2,148 | -$878 | 416 of 435 |
| Senior 65+ | $3,747 | -$1,409 | -$1,030 | -$1,466 | -$196 | 407 of 435 |
| Senior couple 65+ | $7,486 | +$316 | +$695 | +$259 | +$1,529 | 407 of 435 |
| Social Security | $2,084 | -$3,071 | -$2,693 | -$3,129 | -$1,859 | 298 of 435 |
| Two Social Security | $4,169 | -$3,001 | -$2,623 | -$3,059 | -$1,789 | 298 of 435 |
Net monthly income minus required obligations equals the monthly margin. Each row’s rank compares that income group across all 435 districts; rank 1 is the best margin. Values may include presentation rounding. See the methodology for sources, definitions, and computation rules.