Table 1.

Change in 2010 population counts for counties due to the implementation of differential privacy (N = 3,131)

Finding	Overall population			Non-Hispanic whites
	Counts			Counts
	Minimum	Average	Maximum	Minimum	Average	Maximum
Count	−811	−0.39	4,217	−305	−0.30	211
Percent (%)	−2.50	0.44	29.24	−48.84	−0.08	6.72
	Counties			Counties
	Reduce	No change	Increase	Reduce	No change	Increase
Counties	1,198	17	1,916	1,537	26	1,568
Percent (%)	38.26	0.54	61.19	49.09	0.83	50.08
	Non-Hispanic blacks			Hispanics
	Counts			Counts
	Minimum	Average	Maximum	Minimum	Average	Maximum
Count	−137	−0.31	279	−919	0.11	2,935
Percent (%)	−100	7.07	3,700.00	−72.92	15.32	1,650.00
	Counties			Counties
	Reduce	No change	Increase	Reduce	No change	Increase
Counties	1,686	58	1,359	1,332	15	1,784
Percent (%)	54.33	1.86	43.80	42.54	0.48	56.98

Change was estimated by subtracting the official 2010 population count from the DP count. For the percent calculations, we used the 2010 population counts as a denominator. In the case of non-Hispanic blacks, 28 counties do not have enough information to calculate percent change. For this section, the number of counties (N) is 3,103.