Table 1.

Details of the 10 clusters of COVID-19 affected U.S. cities as identified by HC3

Id	Size	Members (FIPS code of the corresponding counties)
1	9	4027, 6001, 6013, 6019, 1073, 4019, 1097, 1101, 4013
2	11	12011, 10003, 11001, 9003, 9009, 9001, 8059, 8123, 8005, 8031, 8041
3	14	6029, 6037, 6059, 6065, 6073, 6067, 6071, 6075, 6081, 6083, 6085, 8001, 6107, 6111
4	16	55101, 55059, 55079, 53053, 55009, 53061, 53077, 49035, 49049, 53033, 51510, 51760, 48201, 48375, 48439, 48453
5	26	39153, 40109, 41051, 39095, 39099, 39049, 39061, 46099, 47037, 47149, 47157, 42101, 44003, 44007, 45079, 42095, 42069, 42077, 42003, 42011, 48157, 48113, 48121, 48141, 48029, 48085
6	16	34021, 34031, 34039, 35001, 36001, 36029, 36061, 39035, 37183, 38017, 37119, 37067, 37081, 36067, 36119, 37063
7	19	22071, 23005, 24510, 25005, 25009, 25013, 25017, 25021, 25023, 26049, 25025, 25027, 27123, 26163, 27053, 26125, 26161, 26081, 26099
8	10	33011, 34007, 34013, 34017, 28049, 29510, 31055, 31109, 32003, 32031
9	13	12031, 12057, 12095, 12099, 12071, 12086, 12103, 12105, 17043, 13089, 13095, 13121, 17031
10	17	22033, 22051, 19153, 19193, 20209, 21111, 22017, 17089, 17201, 17097, 17197, 18003, 18057, 18089, 18097, 18141, 19013