Zillow
GovernmentZillow aggregates housing market information from multiple sources including public tax records, MLS listings, and user submissions to create estimates of home values and rental rates across the United States. The company makes this data available through its website, API, and research publications. While Zillow's Zestimate algorithm generates property valuations, these are algorithmic estimates rather than official appraisals, and accuracy varies by market and property type. The organization also publishes market research reports on housing trends, price trends by geography, and rental market analysis.
Pinned datasets
Zillow Home Value Index (ZHVI)
Home prices from Zillow, updated monthly since 2000. This shows what a typical middle-priced home costs in your state, city, or county, adjusted to smooth out seasonal patterns. Use it to see if home values are going up or down where you live, or to compare how your market stacks up against others.
Zillow For-Sale Inventory (Active Listings)
How many homes are currently on the market in your area? This dataset tracks active listings month by month going back to 2018. You can see whether inventory is rising or falling in your state, city, or county, which tells you how competitive the housing market is. More listings means more choices for buyers. Fewer listings means less supply and potentially higher prices.
Zillow Share of Listings with a Price Cut
When home sellers drop their asking price, it usually means the market is shifting in their direction. This data tracks what percentage of active listings had at least one price cut each month. You can see it by state, city, or county going back to early 2018. Rising numbers suggest a buyer's market; falling numbers mean sellers are holding firm.
Zillow New Listings Count
This counts how many houses and condos get listed for sale each month across the country. The number gets adjusted for seasonal patterns (spring typically has more listings than winter), so you can spot real changes in supply rather than just the usual seasonal swings. You can look at your state, your metro area, or your county to see if the market is heating up or cooling down.
Zillow Housing Affordability Data (Price-to-Income & Mortgage-to-Income Ratios)
When the news says 'homes are getting less affordable,' this is the data behind it. For any metro area or the country as a whole, you can see what percentage of a median household's income goes toward the monthly mortgage payment on a typical new home. You can also look up the exact income a household would need to afford that home, or the maximum price they could pay. If the ratio is going up, homes are eating a bigger chunk of paychecks. If it's flat or dropping, affordability is improving.
Zillow Observed Rent Index (ZORI)
This is how much rent is actually going up (or down) in your area. Unlike surveys that ask landlords what they charge, ZORI tracks real asking prices from actual listings on Zillow, month by month. You can see rental trends for your metro area, county, or ZIP code going back to 2015. The numbers are smoothed out so one weird month doesn't throw off the picture, and seasonal patterns (like summer rent spikes) are already factored in.