U.S. average household size by state and county

Average household size: definition and scope

Average people per occupied housing unit, using the source household population. The headline is the latest value approved within this website’s frozen release. It is not a promise that no newer upstream product exists. The accessible table retains more precision than the rounded headline.

Limitations and comparability

Group quarters are excluded. This is not total population divided by household count.

The estimate describes the full 2020–2024 ACS period. Compare it with the same five-year product and universe. One-year ACS, model-based products and administrative counts cannot be joined into an unlabeled series.

The direct ACS estimate carries the source 90% margin of error where published. A missing or source-controlled margin of error is identified in the raw file rather than invented. Cross-area associations do not establish individual circumstances or explain what caused a difference.

Source data, calculation and CSV downloads

Use the original selected cells, schema and formula with the immutable release. Summary-file columns use E001/M001; formulas use the corresponding ACS codes ending in E. Percentage numerators and denominators are supplied in the export.

B25010_001E

Original producer file · National source cells · Original table dictionary · All covered areas for this indicator (CSV)