Table 2.

Loadings for the first principal component from non-spatial PCA across 3109 counties in the USA

Variable	PC1
% Population with income below poverty level	0.451
% Households with income less than $30 k/year	0.385
% Households on public assistance	0.325
Median household value	− 0.207
% Males and females unemployed	0.312
% Males not in workforce	0.358
% Occupied households with no vehicle	0.282
% Population with less than a HS education	0.383
% Females with management occupations	− 0.22
Variability explained by component	0.548