How and Why Arizona Demographics Are Changing; 2010-2020
This table shows population change from 7/1/2010 to 7/1/2020 for the state and counties,
  change due to Natural Increase and Net Migration and dominant reason for change by comparing these items.

AreaName	Pop2010	Pop2020	PopChg	PopChg%	Births	Deaths	NatInc	IntMig	DomMig	NetMig
Arizona	6,407,342	7,421,401	1,014,059	15.8	842,430	549,606	292,824	156,791	562,552	719,343
Apache County	71,828	71,875	47	0.1	9,709	6,392	3,317	509	-3,802	-3,293
Cochise County	131,823	127,450	-4,373	-3.3	15,393	13,099	2,294	2,642	-9,542	-6,900
Coconino County	134,624	142,481	7,857	5.8	16,092	8,115	7,977	1,787	-1,938	-151
Gila County	53,565	54,303	738	1.4	5,751	7,680	-1,929	250	2,455	2,705
Graham County	37,154	39,211	2,057	5.5	5,552	2,924	2,628	434	-1,027	-593
Greenlee County	8,342	9,341	999	12.0	1,330	588	742	159	79	238
La Paz County	20,499	21,480	981	4.8	1,990	2,716	-726	710	1,020	1,730
Maricopa County	3,825,183	4,579,081	753,898	19.7	537,212	297,223	239,989	106,792	405,394	512,186
Mohave County	200,336	217,206	16,870	8.4	18,194	29,677	-11,483	-573	28,907	28,334
Navajo County	107,693	112,112	4,419	4.1	15,322	10,197	5,125	676	-1,367	-691
Pima County	981,649	1,061,175	79,526	8.1	114,533	94,505	20,028	24,870	35,422	60,292
Pinal County	379,106	480,828	101,722	26.8	45,774	29,172	16,602	8,860	76,053	84,913
Santa Cruz County	47,402	46,808	-594	-1.3	6,411	2,996	3,415	1,098	-5,178	-4,080
Yavapai County	210,990	240,226	29,236	13.9	18,369	29,288	-10,919	782	39,123	39,905
Yuma County	197,148	217,824	20,676	10.5	30,798	15,034	15,764	7,795	-3,047	4,748

NatInc: Natural Increase; (Births less Deaths)
IntMig: International Migration; DomMig: Domestic Migration; NetMig: Net Migration (IntMig+DomMig)
NatInc + NetMig may differ slightly from PopChg due to a "residual" value.
Source: Census Bureau Population Estimates & ProximityOne
http://proximityone.com/demographics2060.htm