The median house price of residential real estate in California has increased notably since 2012. After a brief correction in property prices in 2022, the median price reached 756,200 U.S. dollars in December 2023.

Graph and download economic data for Housing Inventory: Median Listing Price in California (MEDLISPRICA) from Jul 2016 to May 2025 about CA, listing, median, price, and USA.

Graph and download economic data for All-Transactions House Price Index for California (CASTHPI) from Q1 1975 to Q1 2025 about appraisers, CA, HPI, housing, price index, indexes, price, and USA.

Mexico Average House Price: Baja California data was reported at 903,598.000 MXN in Mar 2019. This records an increase from the previous number of 720,437.000 MXN for Dec 2018. Mexico Average House Price: Baja California data is updated quarterly, averaging 658,724.000 MXN from Dec 2014 (Median) to Mar 2019, with 18 observations. The data reached an all-time high of 903,598.000 MXN in Mar 2019 and a record low of 562,050.000 MXN in Dec 2014. Mexico Average House Price: Baja California data remains active status in CEIC and is reported by Federal Mortgage Society. The data is categorized under Global Database’s Mexico – Table MX.EB005: Average House Price.

In October 2024, the median sales price of an existing single-family home in San Mateo, California was two million U.S. dollars. This was more than double the median sales price in the state of California. The most affordable county was Trinity, where an existing single family home sold for approximately 205,000 U.S. dollars.

All-Transactions House Price Index for California was 967.68000 Index 1980 Q1=100 in January of 2025, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for California reached a record high of 967.81000 in October of 2024 and a record low of 41.67000 in January of 1975. Trading Economics provides the current actual value, an historical data chart and related indicators for All-Transactions House Price Index for California - last updated from the United States Federal Reserve on July of 2025.

In October 2024, the median sales price of an existing single-family home in Del Norte, California saw an increase of nearly 30 percent, compared to the 5.8 percent increase in the state. 20 counties saw prices fall during this period. In Trinity, the median sales price of single-family homes decreased by approximately 36 percent.

Median house prices for California districts derived from the 1990 census.

About Dataset

Context This is the dataset used in the second chapter of Aurélien Géron's recent book 'Hands-On Machine learning with Scikit-Learn and TensorFlow'. It serves as an excellent introduction to implementing machine learning algorithms because it requires rudimentary data cleaning, has an easily understandable list of variables and sits at an optimal size between being to toyish and too cumbersome.

The data contains information from the 1990 California census. So although it may not help you with predicting current housing prices like the Zillow Zestimate dataset, it does provide an accessible introductory dataset for teaching people about the basics of machine learning.

Content The data pertains to the houses found in a given California district and some summary stats about them based on the 1990 census data. Be warned the data aren't cleaned so there are some preprocessing steps required! The columns are as follows, their names are pretty self-explanatory: - longitude - latitude - housing_median_age - total_rooms - total_bedrooms - population - households - median_income - median_house_value - ocean_proximity

Acknowledgements This data was initially featured in the following paper: Pace, R. Kelley, and Ronald Barry. "Sparse spatial autoregressions." Statistics & Probability Letters 33.3 (1997): 291-297.

and I encountered it in 'Hands-On Machine learning with Scikit-Learn and TensorFlow' by Aurélien Géron. Aurélien Géron wrote: This dataset is a modified version of the California Housing dataset available from: Luís Torgo's page (University of Porto)

Inspiration See my kernel on machine learning basics in R using this dataset, or venture over to the following link for a python based introductory tutorial: https://github.com/ageron/handson-ml/tree/master/datasets/housing

Graph and download economic data for All-Transactions House Price Index for San Diego-Chula Vista-Carlsbad, CA (MSA) (ATNHPIUS41740Q) from Q4 1975 to Q1 2025 about San Diego, appraisers, CA, HPI, housing, price index, indexes, price, and USA.

United States House Price Index: FHFA: California data was reported at 655.910 Mar1980=100 in Jun 2018. This records an increase from the previous number of 639.250 Mar1980=100 for Mar 2018. United States House Price Index: FHFA: California data is updated quarterly, averaging 227.460 Mar1980=100 from Mar 1975 (Median) to Jun 2018, with 174 observations. The data reached an all-time high of 655.910 Mar1980=100 in Jun 2018 and a record low of 41.630 Mar1980=100 in Mar 1975. United States House Price Index: FHFA: California data remains active status in CEIC and is reported by Federal Housing Finance Agency. The data is categorized under Global Database’s United States – Table US.EB014: House Price Index.

The median house price in 94027, Atherton, California, was about 8.3 million U.S. dollars. This made it the most expensive zip code in the United States in 2023. 11962 Sagaponack, N.Y., was the runner-up with a median house price of about 8.1 million U.S. dollars. Of the 10 most expensive zip codes in the United States in 2026, six were in California.

The median house prices in the most expensive zip codes in California reached as high as 8.3 million U.S dollars. Atherton (94027), had the most expensive median house price, followed by Santa Barbara (93108), and Beverly Hills (90210). Six of the ranked zip codes were among the top ten most expensive zip codes in the United States in 2023.

Graph and download economic data for All-Transactions House Price Index for Orange County, CA (ATNHPIUS06059A) from 1975 to 2024 about Orange County, CA; Los Angeles; CA; HPI; housing; price index; indexes; price; and USA.

Median Home Sale Price: All Residential: Chico, CA data was reported at 375.000 USD th in Jul 2020. This records an increase from the previous number of 363.000 USD th for Jun 2020. Median Home Sale Price: All Residential: Chico, CA data is updated monthly, averaging 256.500 USD th from Feb 2012 (Median) to Jul 2020, with 102 observations. The data reached an all-time high of 375.000 USD th in Jul 2020 and a record low of 160.000 USD th in May 2012. Median Home Sale Price: All Residential: Chico, CA data remains active status in CEIC and is reported by Redfin. The data is categorized under Global Database’s United States – Table US.EB056: Median Home Sale Price: by Metropolitan Areas.

In October 2024, the median square footage sales price of a single-family home in the San Francisco Bay Area was approximately 752 U.S. dollars. Condos, on the other hand, sold for 686 U.S. dollars per square foot. The Far North was the most affordable region with sales price of 250 and 203 U.S. dollars for single family homes and condos, respectively.

Existing single family homes in California have been selling faster than ever in the past year. As of March 2022, the median time between a new listing and a purchase in the major counties in California was below 15 days, whereas in August 2019, it was between 12 and 33 days. The robust demand for properties in California has led to substantial house price growth in almost all counties in California in the past year.

Graph and download economic data for Housing Inventory: Median Listing Price in Los Angeles County, CA (MEDLISPRI6037) from Jul 2016 to Dec 2024 about Los Angeles County, CA; Los Angeles; CA; listing; median; price; and USA.

The median listing price in a given market during the specified month.

With the release of its September 2022 housing trends report, Realtor.com® incorporated a new and improved methodology for capturing and reporting housing inventory trends and metrics. The new methodology updates and improves the calculation of time on market and improves handling of duplicate listings. Most areas across the country will see minor changes with a smaller handful of areas seeing larger updates. As a result of these changes, the data released since October 2022 will not be directly comparable with previous data releases (files downloaded before October 2022) and Realtor.com® economics blog posts. However, future data releases, including historical data, will consistently apply the new methodology. More details are available at the source's Real Estate Data Library (https://www.realtor.com/research/data/).

With the release of its November 2021 housing trends report, Realtor.com® incorporated a new and improved methodology for capturing and reporting housing inventory trends and metrics. The new methodology uses the latest and most accurate data mapping of listing statuses to yield a cleaner and more consistent measurement of active listings at both the national and local level. The methodology has also been adjusted to better account for missing data in some fields including square footage. Most areas across the country will see minor changes with a smaller handful of areas seeing larger updates. As a result of these changes, the data released since December 2021 will not be directly comparable with previous data releases (files downloaded before December 2021) and Realtor.com® economics blog posts. However, future data releases, including historical data, will consistently apply the new methodology. More details are available at the source's Real Estate Data Library (https://www.realtor.com/research/data/).

Graph and download economic data for All-Transactions House Price Index for Sacramento-Roseville-Folsom, CA (MSA) (ATNHPIUS40900Q) from Q2 1976 to Q1 2025 about Sacramento, appraisers, CA, HPI, housing, price index, indexes, price, and USA.

The San Francisco Bay Area was the only area where single-family homes sold above the list price in October 2024. In that month, buyers paid on average one percent above the list price for single-family houses. Condos, on the other hand, sold for 100 percent of the list price. As a result of the robust demand for California properties, property prices increased in the past year.