Table 1.

Tree City USA (TCUSA) participation rates by U.S. region. Chi-square post hoc tests were used to determine whether each region’s participation rate was High, Low, or not significantly different (ns) from the rest of the U.S. (χ2 interpretation).

Region% TCUSAzχ2 interp.
1-New England19.2%Low
2-Middle Atlantic11.5%Low
3-East North Central39.7%High
4-West North Central44.4%High
5-South Atlantic23.1%ns
6-East South Central23.4%ns
7-West South Central12.1%Low
8-Mountain39.1%High
9-Pacific19.7%Low
United States23.5%
  • z For communities ≥2,500 population