What Is Price-to-Income Ratio?
Price-to-income ratio = median-home-price / median-household-income. Historically, 3–4x was normal. A ratio of 5 means the median home costs 5 years of median income. Higher ratios = less affordable—fewer people can buy, more rent. Use it to compare metros and identify affordability stress. Combine with affordability-index (which adds interest rates). Data from Census (median-household-income) and NAR/Zillow (median-home-price). Target metros with 4–5x for balanced markets; above 6x = affordability crisis, strong rental demand.
Price-to-income ratio is median-home-price divided by median-household-income—a measure of housing affordability.
At a Glance
- What it is: Median-home-price / median-household-income
- Why it matters: Indicates affordability; high ratio = more renters
- Typical range: 3–6x; historically 3–4x was normal
- Data sources: Census, NAR, Zillow
- Combine with: Affordability-index, average-rent
How It Works
Calculation. Median-home-price ÷ median-household-income. Example: $300,000 / $75,000 = 4x. The median home costs 4 years of median income.
Interpretation. 3–4x = affordable. 5–6x = stretched. 6x+ = affordability crisis. High ratios mean fewer people can buy—they rent. That supports rental-income and vacancy-rate. But it also means median-household-income may not support rent growth if incomes are stagnant.
For investors. High price-to-income-ratio = strong rental demand (people can't buy). Low ratio = more buyers, fewer renters. Balance depends on strategy. Affordability-index adds interest rates—more complete picture.
Real-World Example
Ava in Denver. Ava compared San Antonio and Austin. San Antonio: median-home-price $285,000, median-household-income $58,000. Ratio: 4.9x. Austin: $450,000, $78,000. Ratio: 5.8x. Austin was less affordable—more people forced to rent. But Austin had stronger job-market and population-growth. She chose Austin for growth—price-to-income-ratio signaled strong rental demand. San Antonio offered better affordability for buyers—different dynamic. Price-to-income-ratio was one input in market selection.
Pros & Cons
- Simple affordability metric
- Readily calculated from median-home-price and median-household-income
- Easy to compare metros
- High ratio = strong rental demand
- Doesn't include interest rates—affordability-index does
- Metro-level—neighborhoods vary
- Median masks distribution
Watch Out
- Interest rates: Price-to-income-ratio ignores rates. When rates rise, affordability drops even if price and income are unchanged. Affordability-index combines all three.
- Single metric: Don't pick a market on price-to-income-ratio alone. Job-market, population-growth, employer-diversification matter. High ratio + low income growth = risk.
- Rent vs. income: Price-to-income-ratio is for buying. For rent affordability, use average-rent / median-household-income.
Ask an Investor
The Takeaway
Price-to-income-ratio measures affordability. High ratio = less affordable—more renters. Combine with affordability-index and job-market for market selection.