Short answer. As of late 2024, roughly 76% of U.S. mortgaged owners hold loans with interest rates below 5%. About 40% hold loans below 3%.
The Federal Reserve's data on outstanding mortgage interest rates, drawn from servicer-reported data through Fannie Mae, Freddie Mac, FHA, and VA, shows the following distribution as of late 2024:
Distribution of outstanding mortgage rates
- Below 3%: ~40%
- 3.0–4.0%: ~21%
- 4.0–5.0%: ~15%
- 5.0–6.0%: ~13%
- Above 6.0%: ~11%
Combined: roughly 76% of mortgaged homeowners hold loans below 5%.
The rate-lock arithmetic
This distribution drives the rate-lock effect. Consider a household with a $400,000 mortgage at 3% on a $500,000 home. Their monthly principal-and-interest payment is $1,686. If they sell and buy a comparable $500,000 replacement at 7.5%, they finance $400,000 at 7.5% — a payment of $2,797, a 66% increase for the same loan amount.
How quickly does this resolve?
The 76% share will decline only as: (1) prevailing mortgage rates fall below 5%, making refinancing economic again; (2) life events (job change, divorce, death, downsizing) accumulate and force listings regardless of rate; or (3) a recession produces involuntary listings via job-loss-driven foreclosures. Most analysts expect a slow grind via path 2 unless the Fed delivers a much more aggressive cutting cycle.
Sources
U.S. Census Bureau Survey of Construction; National Association of Realtors Existing Home Sales report; Freddie Mac Primary Mortgage Market Survey; National Bureau of Economic Research Business Cycle Dating Committee.