The US population in 2017 was 325 million. About half the population resided in the cities included in the database.
| Data overview | Summary statistics | ||
|---|---|---|---|
| # of cities | 68 | Average city population (in millions) | 3.9 |
| Year of data | 2017 (2015-2019 5-year average) | Average density | 373 |
| Average population of base geographic unit | 1590 | Average population-weighted density | 1998 |
| Income definition | Total annual household income | Average income segregation (from 0, lowest, to 100, highest) | 11.7 |
| # of income categories | 16 | Income inequality (80/20 income percentile ratio) | 4.7 |
| % of population living in central city (5km radius from city hall) | 11 |
US data are from the US Census Bureau American Community Survey.
Income is from the 2015-2019 5-year vintage and was collected as follows:
This includes the income of the householder and all other individuals 15 years old and over in the household, whether they are related to the householder or not. (Full description)
Geographic data are based on the Census Block Group.
