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. 2019 Mar 8;2(3):e190138. doi: 10.1001/jamanetworkopen.2019.0138

Table 1. Characteristics of Census Tracts in Chicago, Illinois; Los Angeles, California; and New York City, New York, in 2015.

Census Tract Characteristics No. (%)
Chicago Los Angeles New York City
Total Census Tracts (n = 798) Low-Access Census Tracts (n = 367)a Total Census Tracts (n = 1006) Low-Access Census Tracts (n = 416)a Total Census Tracts (n = 2128) Low-Access Census Tracts (n = 225)a
Total residents, No.
<2000 201 (25.2) 104 (28.3) 26 (2.6) 16 (3.8) 340 (16.0) 47 (20.9)
2000-3999 326 (40.9) 148 (40.3) 550 (54.7) 220 (52.9) 914 (43.0) 87 (38.7)
4000-5999 195 (24.4) 88 (24.0) 378 (37.6) 162 (38.9) 550 (25.8) 62 (27.6)
≥6000 76 (9.5) 27 (7.4) 52 (5.2) 18 (4.3) 323 (15.2) 29 (12.9)
Racial/ethnic composition
White majority 242 (30.3) 59 (16.1) 272 (27.0) 166 (39.9) 712 (33.5) 111 (49.3)
Black majority 280 (35.1) 205 (55.9) 27 (2.7) 24 (5.8) 455 (21.4) 62 (27.6)
Hispanic/Latino majority 168 (21.1) 73 (19.9) 492 (48.9) 156 (37.5) 407 (19.1) 2 (0.9)
Other majority or integrated 108 (13.5) 30 (8.2) 215 (21.4) 70 (16.8) 554 (26.0) 50 (22.2)
Median annual household income, $b
<50 000 488 (61.2) 271 (74.0) 536 (53.8) 187 (45.5) 886 (42.1) 50 (22.7)
50 000-99 000 252 (31.6) 91 (24.9) 377 (37.8) 170 (41.4) 1034 (49.2) 72 (72.3)
100 000-149 000 56 (7.0) 4 (1.1) 62 (6.2) 41 (10.0) 157 (7.5) 11 (5.0)
≥150 000 1 (0.1) 0 22 (2.2) 13 (3.2) 26 (1.2) 0
Travel distance, mean (SD), km 7.9 (4.7) 11.9 (3.1) 7.9 (4.0) 18.2 (8.4) 4.3 (2.9) 11.3 (2.9)
a

Low access was defined as travel distance more than 8.0 km, based on definitions developed by Crandall and colleagues.5

b

Income data were not available for a small number of census tracts in Chicago (n = 1), Los Angeles (n = 5), and New York City (n = 5).