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Cost of Living: Ontario, CA vs San Diego, CA

Wondering how far your dollar stretches in Ontario compared to San Diego? Below we break down housing costs, rent, taxes, income, and quality of life using 2026 data so you can make an informed relocation or remote-work decision. Every number is computed from Census, BLS, and Zillow data specific to these two metro areas.

TL;DR

Ontario cost-of-living index is 128 vs 163 for San Diego (US = 100). Median home: $550,000 vs $875,000. Median rent: $1,800/mo vs $2,195/mo.

Source: Census ACS · Zillow ZHVI/ZORI · BEA RPP, 2026

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San Diego is 27.3% more expensive than Ontario
COL Index: Ontario 128 vs San Diego 163 (national avg = 100)
Written by Jere Salmisto, Founder & Quantitative Systems Builder, CalcFi·Reviewed by CalcFi Editorial·Last reviewed 2026-04-19

Ontario vs San Diego — At a Glance

OntarioMetricSan DiegoDifference
128Cost of Living Index163+27.3%
$550,000Median Home Price$875,000+59.1%
$1,800Median Monthly Rent$2,195+21.9%
$72,200Median Household Income$91,000+26.0%
0.9%Property Tax Rate0.7%-20.0%
4.8%Unemployment Rate3.8%-20.8%
29 minAverage Commute27 min-6.9%
31.5Median Age36.1+14.6%
185,000Metro Population3,340,000+1705.4%

Data sourced from Census Bureau, BLS, Zillow, and ApartmentAdvisor (2024-2025). COL Index: 100 = national average.

Housing Comparison: Ontario vs San Diego

Monthly mortgage assumes 6.5% interest, 30-year fixed, 20.0%down payment. PITI includes principal, interest, property tax, and homeowner's insurance.

Ontario

Median Home Price$550,000
Down Payment (20.0%)$110,000
Loan Amount$440,000
Principal & Interest$2,781/mo
Property Tax$413/mo
Insurance$160/mo
Monthly PITI$3,354/mo

San Diego

Median Home Price$875,000
Down Payment (20.0%)$175,000
Loan Amount$700,000
Principal & Interest$4,424/mo
Property Tax$525/mo
Insurance$255/mo
Monthly PITI$5,205/mo

Rent & Affordability Ratios

Median Monthly Rent$1,800 vs $2,195 (+$395/mo)
Annual Rent Difference$4,740/yr more in San Diego
Home Price-to-Income Ratio7.6x (Ontario) vs 9.6x (San Diego)
Years to Save 20% Down (15% savings rate)10.2 yrs (Ontario) vs 12.8 yrs (San Diego)

Buying a home in Ontario costs $3,354/month (PITI) compared to $5,205/month in San Diego — a difference of $1,851/month or $22,212/year. The price-to-income ratio is 7.6x in Ontario versus 9.6x in San Diego, suggesting Ontario is relatively more affordable for homebuyers relative to local incomes. At a 15% savings rate, it takes 10.2 years to save a down payment in Ontario compared to 12.8 years in San Diego.

Tax Comparison: Ontario vs San Diego

Estimated on each city's median household income, single filer, standard deduction, 2025 rates.

Tax CategoryOntarioSan Diego
Gross Income$72,200$91,000
State Income Tax$2,793$4,490
Federal Income Tax$7,333$11,469
FICA (SS + Medicare)$5,523$6,962
Property Tax (on median home)$4,950/yr$6,300/yr
State Sales Tax Rate7.2%7.2%
Total Tax Burden$15,649 (21.7%)$22,921 (25.2%)
Take-Home Pay$56,551$68,079

On median household income, total taxes (federal + state + FICA) come to $15,649 in Ontario (21.7% effective) versus $22,921 in San Diego (25.2% effective). After taxes, take-home pay is $56,551 in Ontario and $68,079 in San Diego. Property taxes add $4,950/year on the median Ontario home versus $6,300/year in San Diego.

Salary Equivalence: What Your Income Is Worth

A $72,200 salary in Ontario equals
$91,942
in San Diego
A $91,000 salary in San Diego equals
$71,460
in Ontario

These figures adjust for cost of living using the formula: adjusted = salary × (COL_destination / COL_origin). If you earn $72,200 in Ontario (COL 128) and relocate to San Diego (COL 163), you would need $91,942 to maintain the same purchasing power. This means you would need a raise of $19,742 to maintain the same standard of living in San Diego.

Quality of Life: Ontario vs San Diego

Average Commute
29 min
Ontario
27 min
San Diego
2 min longer in Ontario
Unemployment Rate
4.8%
Ontario
3.8%
San Diego
San Diego lower
Metro Population
0.2M
Ontario
3.3M
San Diego
San Diego is 18.1x larger

Beyond costs, quality of life matters. The average commute in Ontario is 29 minutes versus 27 minutes in San Diego, a difference of 2 minutes each way. San Diego's lower unemployment rate of 3.8% versus 4.8% suggests a stronger job market. San Diego skews slightly older with a median age of 36.1 vs 31.5 in Ontario.

Other Cost of Living Comparisons

New York vs OntarioCOL 187 vs 128Los Angeles vs OntarioCOL 173 vs 128Chicago vs OntarioCOL 114 vs 128New York vs San DiegoCOL 187 vs 163Los Angeles vs San DiegoCOL 173 vs 163Chicago vs San DiegoCOL 114 vs 163

Related Calculators

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Cost of Living in Ontario
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Cost of Living in San Diego
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Mortgage Affordability — San Diego
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Rent vs Buy — Ontario
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Salary to Hourly Calculator
Convert $72,200 to hourly
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Frequently Asked Questions

Is Ontario or San Diego more expensive?

San Diego is 27.3% more expensive than Ontario overall. San Diego has a cost of living index of 163 compared to 128 for Ontario (national average = 100). The biggest difference is housing: the median home costs $875,000 in San Diego vs $550,000 in Ontario.

How much more does housing cost in San Diego vs Ontario?

The median home price in San Diego is $875,000, which is $325,000 more than Ontario's median of $550,000. Monthly rent follows a similar pattern: $2,195/month in San Diego vs $1,800/month in Ontario, a difference of $395/month or $4,740/year.

What salary do I need in San Diego to match my Ontario income?

To maintain the same standard of living, a $72,200 salary in Ontario is equivalent to $91,942 in San Diego. This is based on the cost of living index ratio: Ontario's COL index of 128 vs San Diego's 163. Conversely, $91,000 in San Diego equals $71,460 in Ontario.

Which city has lower taxes, Ontario or San Diego?

On a median household income, the combined federal, state, and FICA tax burden is $15,649 (21.7% effective rate) in Ontario vs $22,921 (25.2% effective rate) in San Diego. Property taxes on the median home are $4,950/year in Ontario (0.9% rate) vs $6,300/year in San Diego (0.7% rate). Sales tax rates are 7.2% in California and 7.2% in California.

What is the median household income in Ontario and San Diego?

Ontario median household income: $72,200/yr. San Diego median household income: $91,000/yr (Census ACS).

How does rent compare in Ontario vs San Diego?

Median monthly rent: $1,800 in Ontario vs $2,195 in San Diego. Annualized that is $21,600 vs $26,340.

Which city is better for remote workers, Ontario or San Diego?

Ontario offers a lower cost of living (index 128 vs 163), which lets remote-workers keeping a coastal salary stretch further. San Diego typically wins on amenities and labor-market depth.

Where does the data on this comparison come from?

Ontario and San Diego numbers are pulled from Zillow ZHVI/ZORI (home values, rent), the U.S. Census Bureau ACS (income, demographics), and BEA RPP (cost-of-living index). Each value is timestamped on the page.

How often is this Ontario vs San Diego comparison updated?

Source feeds (Zillow, Freddie Mac PMMS, Census ACS, BEA RPP) are refreshed on their native cadence. Page caches revalidate every 24 hours via Next.js ISR.

Does this comparison replace tax or financial advice?

No. The Ontario vs San Diego cost-of-living page is educational reference using public data and standard formulas. It is not personalized tax, legal, or investment advice. Consult a licensed professional for material decisions.

Explore More

All City ComparisonsOntario COL CalculatorSan Diego COL CalculatorSalary GuidesMortgage Affordability CalculatorRent vs Buy Calculator

Sources & Citations

  1. Zillow Research — ZHVI (home values) & ZORI (observed rent index) — zillow.com/research/data
  2. U.S. Census Bureau — American Community Survey (ACS) 5-year estimates — census.gov/acs
  3. Bureau of Economic Analysis — Regional Price Parities by state and MSA — bea.gov/rpp
  4. Tax Foundation — effective state and local tax rates — taxfoundation.org
  5. Freddie Mac PMMS — weekly national average mortgage rates — freddiemac.com/pmms
  6. Internal Revenue Service — federal income tax brackets and standard deduction — irs.gov
  7. U.S. Bureau of Labor Statistics — unemployment and wage statistics — bls.gov
Methodology & Assumptions

Home prices use Zillow Home Value Index (ZHVI)[1]; rents use Zillow Observed Rent Index (ZORI)[1]. Median household income comes from the Census ACS 5-year estimates[2].

COL indices use the BEA Regional Price Parity methodology[3], normalized so 100 = national average.

Property tax rates are effective rates from the Tax Foundation[4], expressed as % of owner-occupied home value. Mortgage estimates assume 6.5% fixed rate[5], 30-year term, 20.0% down, $1,800/yr homeowners insurance.

Federal tax calculations[6] assume single filer, standard deduction. State tax uses the top marginal rate times taxable income after the state standard deduction. FICA = 6.2% Social Security (up to wage base) + 1.45% Medicare.

Salary equivalence uses adjusted = salary × (COL_destination / COL_origin). This captures cost-of-living shift but not state income tax differences.

Unemployment figures are the most recent monthly MSA-level readings from the BLS LAUS series[7].

Last reviewed is computed from the maximum retrievedAt across every source this page consumes.

City data from Census Bureau[2], BLS[7], and Zillow[1] (2024-2025). Tax calculations use 2025 IRS rates[6], single filer, standard deduction. Mortgage estimates assume 6.5% PMMS rate[5], 30-year term, 20.0% down. COL Index: 100 = national average[3]. Last reviewed 2026-04-19.