VoterForce · Precinct Intelligence

Contra Costa 2026 precinct maps

Free interactive maps for the November 3, 2026 Contra Costa races. Every precinct carries three elections of turnout — the 2024 presidential, the November 2025 Prop 50 special, and the June 2026 primary — alongside registration and demographics. Want the full walk-list for your race? Get in touch.

Cities

City of Richmond
62,951 registered · 66.9% 2024 · 40.5% June 2026
City of San Ramon
51,848 registered · 77.8% 2024 · 41.6% June 2026
City of Antioch
65,082 registered · 66.7% 2024 · 33.1% June 2026
City of Concord
73,087 registered · 74.8% 2024 · 44.2% June 2026
City of Brentwood
45,020 registered · 76.5% 2024 · 43.8% June 2026
City of Pittsburg
38,991 registered · 63.8% 2024 · 31.3% June 2026
City of Martinez
31,459 registered · 79.9% 2024 · 51.3% June 2026
City of Pleasant Hill
22,000 registered · 80.9% 2024 · 51.3% June 2026
Town of Danville
41,184 registered · 83.1% 2024 · 51.5% June 2026
City of Walnut Creek
64,619 registered · 82.4% 2024 · 54.6% June 2026
City of Lafayette
21,834 registered · 84.0% 2024 · 62.5% June 2026

Smaller jurisdictions

City of Orinda
15,270 registered · 83.8% 2024 · 55.9% June 2026
Town of Moraga
11,746 registered · 83.6% 2024 · 62.6% June 2026
City of Clayton
9,691 registered · 83.8% 2024 · 54.0% June 2026
City of San Pablo
20,965 registered · 61.4% 2024 · 31.4% June 2026
City of Pinole
12,299 registered · 74.0% 2024 · 46.5% June 2026
City of El Cerrito
17,735 registered · 82.5% 2024 · 62.8% June 2026
City of Hercules
17,410 registered · 72.4% 2024 · 42.0% June 2026