Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The number of density criteria included in papers on different scales.
| Criteria | Country | State | County | City | Urban district | Total |
|---|---|---|---|---|---|---|
| Population density | 5 | 23 | 42 | 24 | 36 | 130 |
| Housing density | 0 | 0 | 0 | 0 | 4 | 5 |
| Activity density | 0 | 0 | 1 | 0 | 5 | 6 |
| Transport density | 0 | 0 | 0 | 0 | 5 | 5 |
