Contra Costa County, California · HUD 2027 QCT list
Qualified census tracts in Contra Costa County, California (2027)
44 census tracts in Contra Costa County are qualified census tracts on HUD's 2027 list, home to 220,066 people in the 2020 Census. A LIHTC building in one can take 130% of eligible basis for allocations and bond issues after December 31, 2026. Separately, 36 ZIP code areas in the Oakland-Fremont, CA HUD Metro FMR Area are 2027 Small Area DDAs.
Tract list
| Census tract | Population | Poverty rate | Median household income | LIHTC properties |
|---|---|---|---|---|
| 3040.02 | 1,293 | n/a | $76,526 | 0 |
| 3050 | 7,064 | 12.7% | $65,000 | 3 |
| 3060.03 | 5,615 | 17.6% | $62,981 | 1 |
| 3071.02 | 5,824 | 16.6% | $80,855 | 1 |
| 3072.01 | 3,794 | 27.6% | $63,162 | 2 |
| 3072.02 | 4,355 | 13.2% | $64,234 | 2 |
| 3072.05 | 7,484 | n/a | $71,925 | 1 |
| 3090 | 3,699 | n/a | $86,818 | 2 |
| 3100 | 6,106 | 24.3% | $77,198 | 4 |
| 3110 | 5,668 | n/a | $78,989 | 2 |
| 3120 | 2,974 | 13.3% | $71,375 | 0 |
| 3131.04 | 2,685 | n/a | $60,625 | 2 |
| 3131.05 | 6,559 | n/a | $79,738 | 3 |
| 3132.06 | 6,342 | 15.4% | $78,115 | 2 |
| 3141.03 | 5,513 | 16.1% | $81,455 | 2 |
| 3141.05 | 4,540 | 12.8% | $53,621 | 3 |
| 3141.06 | 3,744 | n/a | $74,923 | 1 |
| 3142 | 7,168 | n/a | $87,098 | 0 |
| 3280 | 2,411 | 26.4% | $53,737 | 0 |
| 3361.01 | 4,808 | n/a | $81,842 | 2 |
| 3361.03 | 4,131 | 13.2% | $70,221 | 1 |
| 3361.04 | 3,321 | n/a | $68,182 | 0 |
| 3362.01 | 4,062 | n/a | $90,375 | 1 |
| 3362.02 | 5,720 | n/a | $82,955 | 2 |
| 3372.01 | 2,602 | n/a | $61,658 | 0 |
| 3381.01 | 5,161 | n/a | $73,873 | 1 |
| 3511.04 | 1,964 | n/a | $66,500 | 0 |
| 3511.05 | 1,723 | n/a | $69,375 | 0 |
| 3580 | 6,237 | 14.2% | $80,255 | 1 |
| 3650.02 | 6,085 | 11.3% | $83,587 | 2 |
| 3660.01 | 4,594 | n/a | $84,028 | 0 |
| 3660.02 | 6,525 | n/a | $79,355 | 1 |
| 3671 | 5,941 | n/a | $72,005 | 1 |
| 3680.02 | 4,148 | 8.6% | $67,266 | 2 |
| 3690.01 | 6,771 | n/a | $76,969 | 2 |
| 3690.02 | 2,839 | n/a | $69,640 | 0 |
| 3730 | 4,711 | n/a | $99,808 | 0 |
| 3750 | 4,869 | 14.8% | $77,667 | 0 |
| 3760 | 6,941 | 16.1% | $73,730 | 6 |
| 3770 | 7,725 | 22.8% | $49,837 | 5 |
| 3790 | 7,255 | 35% | $68,963 | 0 |
| 3810 | 7,261 | 20.7% | $87,603 | 2 |
| 3820 | 8,334 | n/a | $61,862 | 4 |
| 3860 | 3,500 | 17.4% | $83,162 | 1 |
Source: HUD 2027 QCT data file (qct_data_2027.xlsx), the tract figures HUD published with the 2027 list (population: 2020 Census; poverty rate and median household income: 2020-2024 ACS 5-year estimates, blank where HUD's file is blank). LIHTC properties: monitored properties in HUD's LIHTC database (LIHTCPUB, revised May 28, 2026). Designations: FR Doc. 2026-20390.
Changes from 2026: 5 tracts are new for 2027 (3040.02, 3141.05, 3362.01, 3660.01, 3690.02); 2 dropped off since 2026 (3071.01, 3160). All 2027 changes.
How HUD picks these tracts
A tract qualifies when at least half of its households earn under 60% of area median gross income, or its poverty rate is 25% or more. HUD cannot designate more than 20% of a metro or nonmetro area's population, so it ranks eligible tracts and some that pass the tests miss the list. That is why a tract in this county with a high poverty rate may not appear here. The 2027 designations take effect for buildings whose credits are allocated, or whose bonds are issued, after December 31, 2026; a site that drops off a later list keeps its status if a complete application was filed before the new list took effect and credits are allocated within 730 days of that filing (HUD notice, FR Doc. 2026-20390, section VII).
Census tract boundaries do not follow streets you can see, so confirm a site with the address lookup, which returns the tract from the Census geocoder.
More Contra Costa County data
- Contra Costa County 2026 income and rent limitsHUD MTSP
- Year 15 and Year 30 propertiesContra Costa County
- California QCTs and DDAsall counties
- Credit estimatorwith the 130% boost
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