Table 1.

Characteristics of 212 ZIP codes in the study area.

	Overall (N = 212)
	Mean (SD)	Median [Min, Max]
Median age (years)	40.0 (7.31)	40.5 [20.2, 83.4]
Female sex (%)	51.1 (6.71)	51.4 [0, 86.5]
White race (%)	77.4 (25.0)	87.7 [2.30, 100]
Hispanic (%)	5.85 (8.85)	3.30 [0, 65.3]
High school education or less (%)	39.5 (17.6)	39.9 [6.30, 100]
Poverty (%)	10.5 (10.5)	6.45 [0, 57.8]
Median income (10,000 USD)	3.49 (1.42)	3.37 [0.406, 16.3]
Population density (10 people per sq. mile)	501 (630)	230 [4.22, 3,360]
Smoking prevalence (%)	16.7 (4.72)	16.2 [4.50, 29.6]
Smoking categories
High	111 (52.4%)
Low	101 (47.6%)
Distance to major highway (km)	2.08 (2.19)	1.25 [0.00509, 10.5]