Contra Costa County
CA · Pop. 1,161,458 · Urban County
Contra Costa County is an urban county in California, spanning 717 square miles with 1,161,458 residents at a density of 1619.9 people per square mile, a more developed setting where truly rural parcels are scarcer. The agricultural economy is rated weak, built on sweet corn, hay, tomatoes. The median home price is $831,000, with an effective property tax rate of 0.83%. The climate sits in USDA hardiness zone 9b with a 335-day growing season, average summer highs of 82.3°F and average winter lows of 40°F. Annual rainfall averages 25 inches, and with drought risk rated very high, water storage and irrigation planning matter. John Muir Medical Center - Walnut Creek Campus is 4.9 miles away and includes an emergency room. Broadband reaches 99.7% of homes. On the hazard side, flood risk is very high, tornado risk is high, wildfire risk is very high, drought risk is very high, so plan infrastructure and insurance accordingly.
Pros
- A long 335-day growing season in USDA zone 9b supports a wide range of crops and multiple plantings.
- A low effective property tax rate of 0.83% holds annual carrying costs down.
- Broadband reaches 99.7% of homes, making remote work and online farm sales realistic.
- John Muir Medical Center - Walnut Creek Campus, with an emergency room, is just 4.9 miles away — strong local healthcare access.
- A low poverty rate of 8.3% signals a relatively stable local economy.
Cons
- Wildfire risk is very high, requiring defensible space, fire-resistant construction, and an evacuation plan.
- Flood risk is very high, so careful parcel siting and flood insurance are essential.
- Drought risk is very high, making water storage and irrigation infrastructure essential rather than optional.
- A median home price of $831,000 raises the cost of entry relative to more affordable rural markets.
- The agricultural economy is rated weak, so local farm markets, suppliers, and services are limited.
At a glance
Contra Costa County, CA is a challenging place to homestead on the data.
- Homestead score
- 26/100
- Median home price
- $831k
- Property tax
- 0.83%
- Growing season
- 335 days (zone 9b)
- Annual rainfall
- 25"
- Broadband
- 99.7%
- Nearest hospital
- John Muir Medical Center - Walnut Creek Campus, 4.9 mi
Taxes & Cost of Living
Land & Building
Climate & Growing
Natural Disaster Risk
Healthcare
Infrastructure & Community
Business & Employment
Homesteading in Contra Costa County: FAQ
- What is the growing season like in Contra Costa County?
- Contra Costa County is in USDA hardiness zone 9b with a 335-day growing season, average summer highs of 82.3°F, and average winter lows of 40°F. The established crops are sweet corn, hay, tomatoes.
- How affordable is land and property here?
- The median home price is $831,000 and the effective property tax rate is 0.83%. County-level per-acre prices aren't published, so compare current local listings for raw land.
- Is broadband internet available?
- Broadband reaches 99.7% of homes, strong coverage that supports remote work for most parcels.
- How close is healthcare?
- John Muir Medical Center - Walnut Creek Campus is 4.9 miles away and includes an emergency room; there are 11 hospitals in the county.
Explore California Resources
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LandWatch
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Lands of America
The largest listing site for rural property — farms, ranches, hunting land, and timberland.
AcreTrader
Invest in farmland online — vetted properties with passive income potential.
More counties in California
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The closest counties to Contra Costa County by distance, including across state lines.
Data sources
Verified
Figures are sourced from public datasets: U.S. Census Bureau — ACS 5-year & Gazetteer, USDA NASS Census of Agriculture, USDA Plant Hardiness Zone Map, NOAA NCEI U.S. Climate Normals (1991–2020), FEMA National Risk Index, FCC Broadband Data Collection, BLS Local Area Unemployment Statistics, HIFLD Hospitals. Always confirm specifics locally before relying on them. See our methodology for how the homestead score is calculated.
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