CoBuy Co-owner Count™
Also known as: Co-owner Count
TL;DR — The CoBuy Co-owner Count is CoBuy's estimate of how many Americans co-own a home with someone other than a spouse: about 64 million in 2026. It is a child metric of the CoBuy Co-ownership Index.
The CoBuy Co-owner Count™ is CoBuy's estimate of how many Americans co-own a home with someone other than a spouse. For 2026 it stands at roughly 64 million. It is a child metric of the CoBuy Co-ownership Index™, CoBuy's recurring data series on co-ownership in America.
Track the current figure on the CoBuy Co-ownership Index.
What it captures
The count reflects the total number of people who currently hold a home jointly with someone they are not married to: friends, siblings, parents and adult children, or unmarried partners. Where the CoBuy Co-buying Rate™ measures how often new purchases involve co-buyers, a yearly flow, the Co-owner Count measures how many co-owners exist in total, the accumulated stock. Together they describe both the pace and the scale of co-ownership.
How it is derived
The count is a triangulated estimate anchored to federal data, not a computed composite. It draws on U.S. Census (ACS) household and tenure data and CoBuy's proprietary research across more than 3,500 co-buyers since 2016. It is reported as an estimate, disclosed as such, and refreshed with CoBuy's annual national report, published since 2021.
Why it matters for co-owners
For a prospective co-owner, the count puts the decision in scale: roughly 64 million Americans already co-own a home with someone other than a spouse. Buying and holding a home with others is not a fringe arrangement but a path millions have taken. Alongside the CoBuy Co-buying Rate and average group size, the count helps a group understand the market it is entering.
Key Points
- CoBuy's estimate of how many Americans co-own a home with a non-spouse
- Roughly 64 million in 2026
- A child metric of the CoBuy Co-ownership Index, alongside the CoBuy Co-buying Rate
- Measures the total stock of co-owners, where the Co-buying Rate measures the yearly share of purchases
- A triangulated estimate anchored to federal data (Census ACS) plus CoBuy research, reported as an estimate and refreshed with CoBuy's annual national report, published since 2021