Cost of Living in Foster City, CA
Updated November 2026 · San Mateo County · San Francisco-Oakland-Fremont, CA metro area · population 32,792
Prices in Foster City are 36.5% above the US average (local index 136.5; the BEA index for the San Francisco-Oakland-Fremont, CA metro area is 115.6), with local housing the biggest cost driver at 266.6; a single adult's modelled budget is about $5,387 a month and the median rent is $3,500+.
Prices by category
CostLiving local estimate. 100 = US average; 110 means prices are 10% higher. Housing reflects Foster City's own median rent compared with the area's average rent; goods, utilities and other services are BEA's official price parities for the San Francisco-Oakland-Fremont, CA metro area, unchanged.
Foster City price index by category, US average = 100: All items 136.5, Housing (rents) 266.6, Goods 108.5, Utilities 172.6, Other services 106.2
It is the 2nd most expensive of the 196 California cities in our data. More expensive than 100% of the cities we cover.
| BEA index | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|
| All items | 119.7 | 119.6 | 120.0 | 118.0 | 117.6 | 115.6 |
Monthly budget by household type
1 adult · 1-bedroom · modelled estimate for Foster City, CA
| Category | Per month | Per year | Share |
|---|---|---|---|
| Housing (rent) | $3,280 | $39,360 | 61% |
| Utilities | $387 | $4,644 | 7% |
| Food at home | $306 | $3,672 | 6% |
| Transportation | $861 | $10,332 | 16% |
| Health care | $373 | $4,476 | 7% |
| Clothing, personal care & supplies | $180 | $2,160 | 3% |
| Total | $5,387 | $64,644 | 100% |
2 adults · 2-bedroom · modelled estimate for Foster City, CA
| Category | Per month | Per year | Share |
|---|---|---|---|
| Housing (rent) | $3,501 | $42,012 | 47% |
| Utilities | $622 | $7,464 | 8% |
| Food at home | $565 | $6,780 | 8% |
| Transportation | $1,705 | $20,460 | 23% |
| Health care | $692 | $8,304 | 9% |
| Clothing, personal care & supplies | $356 | $4,272 | 5% |
| Total | $7,441 | $89,292 | 100% |
2 adults + 2 children · 3-bedroom · modelled estimate for Foster City, CA
| Category | Per month | Per year | Share |
|---|---|---|---|
| Housing (rent) | $3,501 | $42,012 | 42% |
| Utilities | $756 | $9,072 | 9% |
| Food at home | $806 | $9,672 | 10% |
| Transportation | $2,268 | $27,216 | 27% |
| Health care | $645 | $7,740 | 8% |
| Clothing, personal care & supplies | $458 | $5,496 | 5% |
| Total | $8,434 | $101,208 | 100% |
Modelled estimate of basic costs, excluding taxes, child care and savings. Housing is rent excluding tenant-paid utilities (counted under utilities). See how the budget is calculated.
Housing costs in Foster City
Rent by number of bedrooms
| Size | Median rent |
|---|---|
| Studio | $3,144 |
| 1 bedroom | $3,280 |
| 2 bedrooms | $3,500+ |
| 3 bedrooms | $3,500+ |
| 4 bedrooms | $3,500+ |
Median rent: Census ACS 2020-2024 median gross rent by bedrooms (rent plus tenant-paid utilities, all renters).
Rent, home values and affordability
| Measure | Value |
|---|---|
| Median gross rent | $3,500+ |
| Median contract rent (excl. utilities) | $3,500+ |
| Median home value | $1,838,200 |
| Owner costs with a mortgage | $4,000+/mo |
| Median household income | $199,143 |
| Rent as % of renter income Moderate | 25.5% |
| Home value ÷ household income Very expensive | 9.2× |
Census ACS 5-year 2020-2024.
Electricity and gas prices
Residential electricity in California
29.75¢ per kWh, August 2026
12-month change: −3.8% (from 30.92¢) · US 18.16¢
Average household uses 507 kWh a month in California ≈ $164/month. Source: EIA-861M (statewide average).
Regular gasoline
$5.75 per gallon, week of 2026-11-02
12-month change: +29.6% (from $4.43) · US $4.15
EIA weekly retail price survey.
Inflation in the West
Consumer prices in the West Census region rose +3.4% in the 12 months to September 2026 (US +3.7%). Nationally, food at home changed +1.8%, shelter +3.2% and energy +20.4%. Source: BLS CPI-U, not seasonally adjusted. CPI is published for regions and large metro areas, so the regional figure is shown.
Salary equivalent
Because prices in Foster City are 36.5% above the US average, $60,000 here has the buying power of about $43,900 in an average-priced US area.
Formula: US-equivalent = salary × 100 ÷ 136.5. Based on the local cost index (CostLiving estimate from BEA RPP and Census rents); taxes not included.
Nearby cities
| City | Distance | Index | Budget (single) | Median rent |
|---|---|---|---|---|
| San Mateo, CA | 3 mi | 130.6 | $4,611 | $3,077 |
| Redwood City, CA | 4 mi | 129.1 | $4,650 | $2,968 |
| Hillsborough, CA | 6 mi | 136.5 | $5,167 | $3,500+ |
| Burlingame, CA | 6 mi | 126.6 | $4,394 | $2,785 |
| Menlo Park, CA | 8 mi | 132.9 | $4,425 | $3,239 |
| Hayward, CA | 9 mi | 121.1 | $3,941 | $2,391 |
Cities with a similar cost of living
| City | Index | Budget (single) | Median rent |
|---|---|---|---|
| Hillsborough, CA | 136.5 | $5,167 | $3,500+ |
| Malibu, CA | 137.7 | $5,577 | $3,500+ |
| Newport Beach, CA | 134.9 | $4,636 | $3,316 |
Compare Foster City with another city
Frequently asked questions
Is Foster City, CA an expensive place to live?
Foster City has a local cost of living index of 136.5, which is 36.5% above the US average. This CostLiving estimate starts from the BEA Regional Price Parities 2024 for the San Francisco-Oakland-Fremont, CA metro area (115.6) and adjusts housing to Foster City's own rents. It is 25.8 points above the California average. It is the 2nd most expensive of the 196 California cities in our data. More expensive than 100% of the cities we cover.
How much money do you need to live in Foster City?
Our modelled estimate of basic monthly costs is $5,387 for a single adult, $7,441 for a couple and $8,434 for a family of four, before taxes, child care and savings. A $60,000 salary in an average-priced US area buys about the same as $81,900 in Foster City.
What is the average rent in Foster City?
The median gross rent (rent plus tenant-paid utilities) is $3,500+ a month (Census ACS 2020-2024). By size: 1 bedroom $3,280, 2 bedrooms $3,500+, 3 bedrooms $3,500+. The typical renter spends 25.5% of household income on rent (moderate).
How much does a house cost in Foster City?
The median owner-estimated home value is $1,838,200, 9.2 times the median household income of $199,143 (very expensive). Owners with a mortgage pay a median $4,000+ a month in housing costs.
How much is electricity and gas in Foster City?
California residential electricity averaged 29.75¢ per kWh in August 2026 (US 18.16¢). Regular gasoline was $5.75 a gallon (California average, week of 2026-11-02).
Sources and notes
- Local cost index: CostLiving estimate from BEA Regional Price Parities 2024 for the San Francisco-Oakland-Fremont, CA metropolitan statistical area (BEA index 115.6) with housing from Census ACS median rent (city figure); see the methodology.
- Rents, home values, income, population: U.S. Census Bureau ACS 5-year 2020-2024, Census place 0625338 (Foster City city).
- Electricity: EIA-861M, California residential average, August 2026.
- Gasoline: EIA weekly retail regular gasoline, California, week of 2026-11-02.
- Inflation: BLS CPI-U West region, September 2026.
- Budget baselines: BLS Consumer Expenditure Survey 2025; electricity use by household size: EIA RECS 2020.
Labels such as “county figure” or “state nonmetro figure” mark values that come from a larger area because the city-level figure is unavailable or unreliable. The monthly budget is a modelled estimate, not observed spending, and excludes taxes. This page is for general information and is not financial advice. Methodology · All sources