San Joaquin County, CA Property Tax: $3,782/yr (2026)
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The effective property tax rate in San Joaquin County is 0.76% of assessed home value. On a home at the county median value of $494,500, that works out to about $3,758 per year, or $313 per month. San Joaquin County is located in central California, and is home to approximately 787,416 residents.
About San Joaquin County
San Joaquin County covers approximately 1,392.2 square miles in California. The county is home to about 787,416 residents living in roughly 256,826 housing units, of which 57.8% are owner-occupied. The median household income is $88,531, and the median home was built in 1983.
San Joaquin County borders Alameda County, Amador County, Calaveras County, Contra Costa County, Sacramento County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in California
Property taxes in California are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in California offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the San Joaquin County Assessor's office to learn which exemptions apply to your property and when to file.
San Joaquin County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| San Joaquin County, CA | 0.76% | $494,500 | $3,758 |
| California state average | 0.71% | — | $3,511* |
| Alameda County | 0.76% | $1,057,400 | $8,061 |
| Amador County | 0.70% | $422,800 | $2,939 |
| Calaveras County | 0.71% | $441,800 | $3,154 |
| Contra Costa County | 0.83% | $830,800 | $6,903 |
| Sacramento County | 0.76% | $498,900 | $3,768 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at San Joaquin County's median home value of $494,500. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does San Joaquin County's property tax rate compare to the rest of California?
At 0.76%, San Joaquin County is higher than the California state average of 0.71%. On a home at the county median of $494,500, that means about $3,758 per year — versus $3,511 at the state average rate, a difference of $247 per year. Compared to the national average of 1.10%, San Joaquin County is below average.
What's a typical annual property tax bill in San Joaquin County?
For a home at the county median value of $494,500, the annual property tax in San Joaquin County is approximately $3,758 — or about $313 per month. For a home worth $741,750, expect around $5,637 per year. For a $989,000 home, approximately $7,516 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a San Joaquin County property tax assessment?
Property assessment appeals in San Joaquin County are handled by the San Joaquin County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in San Joaquin County?
California counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.76% shown here. Contact the San Joaquin County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File