Table 2. Characteristics of 1,976 rural and 1,167 metropolitan counties, by estimated prevalence of latent TB infection, United States, 2011–2015*.
| Characteristic | 1,976 rural counties |
1,167 metropolitan counties |
|||||
|---|---|---|---|---|---|---|---|
| 1,454 with estimated prevalence <1% | 320 with estimated prevalence 1%–<3% | 202 with estimated prevalence >3% | 527 with estimated prevalence <1% | 465 with estimated prevalence 1%–<3% | 175 with estimated prevalence >3% | ||
| US Census 2010 data | |||||||
| Combined population of counties | 28,727,127 | 11,750,121 | 5,816,158 | 37,414,210 | 115,341,399 | 109,697,523 | |
| Median county population, rounded
to thousands |
13,000 |
32,000 |
23,000 |
|
38,000 |
144,000 |
291,000 |
| Estimated prevalence of Mycobacterium tuberculosis infection | |||||||
| Estimated no. infected in all counties | 126,140 | 191,707 | 329,547 | 212,563 | 2,300,435 | 5,772,136 | |
| Estimated median no. infected/county |
0 |
500 |
1,112 |
|
124 |
2,376 |
12,388 |
| County population living in poverty, %† | |||||||
| <10 | 95 (7) | 13 (4) | 2 (1) | 112 (21) | 63 (14) | 25 (14) | |
| 10–15.5 | 564 (39) | 78 (24) | 29 (14) | 221 (42) | 171 (37) | 30 (17) | |
| 15.6–19.9 | 378 (26) | 95 (30) | 25 (12) | 124 (24) | 144 (31) | 58 (33) | |
|
>20 |
417 (29) |
134 (42) |
146 (72) |
|
70 (13) |
87 (19) |
62 (35) |
| Race/ethnic group in county with largest no. active TB cases reported | |||||||
| Black non-Hispanic | 81 (15) | 42 (13) | 60 (30) | 45 (14) | 86 (18) | 57 (33) | |
| White non-Hispanic | 241 (45) | 109 (34) | 34 (17) | 142 (44) | 110 (24) | 17 (10) | |
| Hispanic | 74 (14) | 58 (18) | 60 (30) | 25 (8) | 82 (18) | 43 (25) | |
| Alaska Native/Native American or Pacific Islander | 36 (7) | 14 (4) | 15 (7) | 8 (2) | 8 (2) | 3 (2) | |
| Asian | 43 (8) | 24 (8) | 8 (4) | 48 (14) | 118 (25) | 46 (26) | |
| No predominant race/ethnic group | 979 (67) | 73 (23) | 24 (12) | 259 (49) | 61 (13) | 9 (5) | |
*Values are no. (%) unless otherwise noted. County equivalents (i.e., Alaska boroughs, District of Columbia, Louisiana parishes, and Virginia independent cities) are also shown. US Department of Agriculture 2013 Rural–Urban Continuum Codes were dichotomized (i.e., codes 4–9 were considered rural and codes 0–3 were considered metropolitan). †County all-ages poverty level in 2011 as determined by US Census Bureau Small Area Income and Poverty Estimates.