TABLE 1—

Demographic Data on 107 US Cities

	Mean	SD	Minimum	Maximum
1990 population	493,476	812,742	143,485	7,322,564
Percentage Black	23.14	17.78	1.32	75.67
Percentage married	50.13	6.40	35.00	63.77
Percentage in poverty	17.56	5.69	4.25	32.41
Percentage with less than high school education	9.14	4.97	2.35	31.92
Percentage unemployed	7.45	2.52	2.80	19.67
Boarded-up units per 1000	0.709	0.657	0.02	3.61
Percentage population change from 1980 to 1990	11.00	19.72	–16.41	89.53
Percentage uninsured	14.33	5.64	5.00	29.70

Note. Data are from the 1990 US Census.¹⁷