Contra Costa AVA
| Wine region | |
| Type | American Viticultural Area |
|---|---|
| Year established | 2024 |
| Years of wine industry | 179 |
| Country | United States |
| Part of | California, Central Coast AVA, San Francisco Bay AVA |
| Other regions in California, Central Coast AVA, San Francisco Bay AVA | Livermore Valley AVA, Santa Clara Valley AVA, Lamorinda AVA |
| Climate region | Region III-V |
| Heat units | 3,008-4,275 GDD |
| Precipitation (annual average) | 9 to 22 in (232–565 mm) |
| Total area | 167,146 acres (261 sq mi) |
| Size of planted vineyards | 1,700 acres (688 ha) |
| No. of vineyards | 60 |
| Varietals produced | Carignane, Chardonnay, Cabernet Sauvignon, Malbec,Mourvedre, Petite Sirah, Syrah, Viognier, Zinfandel |
| No. of wineries | 14 |
Contra Costa is the 150th American Viticultural Area (AVA) in California located in the San Francisco Bay Area. It lies east of San Pablo Bay in Contra Costa County on the southern banks of the Carquinez Strait encompassing the area around the cities of Concord, Martinez, Pittsburg, Antioch and Brentwood. It was established on March 14, 2024 by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury after reviewing the petition submitted by Patrick Shabram on behalf of the Contra Costa Winegrowers Association proposing to establish an viticultural area named "Contra Costa."
Upon careful review of the petition and the submitted comments, TTB found the evidence provided by the petitioner supported the establishment of the 167,146 acres (261 sq mi) Contra Costa AVA and the expansion of the San Francisco Bay and Central Coast viticultural areas boundaries by approximately 109,955 acres (172 sq mi) avoiding a boundary overlap and entirely encompass Contra Costa AVA. As of 2024, the AVA contains at least 14 wineries and 60 commercial vineyards cultivating about 1,700 acres (688 ha) under vine. The most commonly grown grape varietal is Zinfandel, but other varieties grown in Contra Costa include Petite Sirah, Mourvedre, Chardonnay and Cabernet Sauvignon.