A "principal city" is the largest city in a metropolitan area. Other cities in a metropolitan area can also be designated principal cities if they meet certain requirements. INDIVIDCC indicates which principal city is the household's city of residence. Not all principal cities are identified, and many households do not live in a principal city or a metropolitan area, and so INDIVIDCC is not identified. INDIVIDCC must be used along with METFIPS and (sometimes) COUNTY or STATEFIP to uniquely identify cities (more information is under the "Codes" tab). Note that for many cities, sample sizes will be too small to provide reliable city-level statistics.
- All households.
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