San Francisco County · California
ZIP code 94121
- Population
- 42,987
- Median income
- $138,353
- Median home
- $1,634,600
- Sales tax
- 8.625%
ZCTA residents
Household, past 12 months
Owner-occupied value
Combined state + local
Quick answer
ZIP 94121 sits in San Francisco County, California and is home to 42,987 people. Median household income is $138,353, the median home is worth $1,634,600 and median gross rent is $2,327. 43% of households own their home, and purchases are taxed at 8.625% combined.
- County
- San Francisco County
- State
- California (CA)
- Area codes
- 415, 510, 628, 650, 707, 916, 925
FIPS 06075
1,803 ZIPs covered
NANPA codes serving this area
The numbers for 94121
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 42,987ZIP 94121 residents
- Median household income
- $138,353Past 12 months, inflation adjusted
- Median home value
- $1,634,600Owner-occupied units
- Median gross rent
- $2,327Rent plus utilities, monthly
- Median age
- 43.7 yrsAll residents
- Homeownership rate
- 43%Owner-occupied households
Sales tax in 94121
What a purchase inside this ZIP costs at checkout.
This ZIP falls inside the San Francisco rate area, so state, county, city and district levies are published here as a full stack.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 94121 compares
ZIP 94121 against the median ZIP in San Francisco County and across California.
| Measure | ZIP 94121 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $138,353 | $145,717 | $89,916 | +54% |
| Median home value | $1,634,600 | $1,500,200 | $628,900 | +160% |
| Median gross rent | $2,327 | $2,503 | $1,851 | +26% |
| Population | 42,987 | 31,453 | 15,085 | +185% |
Medians are computed across the 28 ZIP areas in San Francisco County and the 1803 ZIP areas in California.
Statewide rank
Where this ZIP places among all 1803 California ZIP areas.
- Income
- #239
- Home value
- #109
- Population
- #334
richer than 85% of 1,593 state ZIPs
above 93% of 1,597 state ZIPs
larger than 81% of 1,803 state ZIPs
Comparable ZIP codes
California ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under San Francisco County.
ZIP 94121 questions
Common questions about this ZIP code.
- Where is ZIP code 94121?
- ZIP 94121 lies mostly in San Francisco County, California. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 94121?
- Purchases are taxed at 8.625% combined, built from the San Francisco jurisdiction stack.
- Is 94121 expensive to live in?
- Median rent runs $2,327 a month, about 20% of median household income, and the median home is worth $1,634,600 — +160% against the typical California ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- California Department of Tax and Fee Administration — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.