Average mortgage payment in Napa County, CA (2026)
The average mortgage payment in Napa County on a median-priced home (~$750,000) is roughly $5,874/month — assuming 10% down at a 6.85% 30-year fixed rate and California's 1.25% effective property tax rate (full PITI).
To carry that payment under the standard 28% front-end DTI rule, you'd need an annual household income near $251,754. County population is roughly 138,019.
Adjust the scenario
How Napa County compares to California
The typical home in Napa County is 3% below the statewide median of $770,000 in California. Property tax is set at the state's effective rate of 1.25% — local millage and special assessments vary by county, but this is the right starting point.
The payment above bakes in principal, interest, property tax, and homeowners insurance — it does not include HOA dues or mortgage insurance (PMI). PMI kicks in automatically when down payment is below 20% on a conventional loan. For a full breakdown, run your own numbers in the main calculator.
Frequently asked questions
What is the average mortgage payment in Napa County?+
On a median Napa County home (~$750,000) at a 6.85% 30-year fixed rate with 10% down, all-in PITI runs about $5,874/month, including ~$781 in property tax.
What income do I need to buy a home in Napa County?+
Using the 28% front-end DTI rule, you'd need roughly $251,754 in annual gross household income to comfortably carry the median Napa County home.
How does Napa County compare to the rest of California?+
Napa County's median home ($750,000) is 3% below the California median of $770,000.
Does this include HOA fees or PMI?+
No. HOA dues vary too widely to assume a default — add them directly to the payment. PMI applies when you put less than 20% down on a conventional loan; the main calculator factors it in automatically.