Source: U.S. Census Bureau  

Release: Housing Units Authorized By Building Permits  

Units:  Units, Not Seasonally Adjusted

Frequency:  Monthly

This series represents the total number of building permits for all structure types. Structure types include 1-unit, 2-unit, 3-unit, 4-unit, and 5-unit or more.

The Saint Louis Federal Reserve Bank uses the most recent Metropolitan Statistical Area definitions released by the Office of Management and Budget. For more information on specific definitions visit here.

Source: U.S. Census Bureau  

Release: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas  

Units:  Thousands of Persons, Not Seasonally Adjusted

Frequency:  Annual

All observations are July 1 estimates of each year.

Source: Realtor.com  

Release: Housing Inventory Core Metrics  

Units:  Level, Not Seasonally Adjusted

Frequency:  Monthly

The count of active single-family and condo/townhome listings for a given market during the specified month (excludes pending listings).

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.

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.