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County Name	Percent change Rank	Percent change	Total housing units 2000	Total housing units 2010
Franklin	1	59.2	16,084	25,603
Franklin	2	51.8	16,084	24,423
San Juan	3	39.0	9,752	13,555
San Juan	4	36.5	9,752	13,313
Kittitas	5	34.7	16,475	22,188
Kittitas	6	32.9	16,475	21,900
Mason	7	27.8	25,515	32,596
Mason	8	27.4	25,515	32,518
Thurston	9	27.0	86,652	110,073
Clark	10	26.5	134,030	169,520
Jefferson	11	26.3	14,144	17,863
Benton	12	26.2	55,963	70,606
Jefferson	13	25.6	14,144	17,767
Island	14	25.0	32,378	40,458
Clark	15	24.9	134,030	167,413
Thurston	16	24.8	86,652	108,182
Douglas	17	24.4	12,944	16,100
Island	18	24.3	32,378	40,234
Whatcom	19	23.8	73,893	91,447
Douglas	20	23.6	12,944	16,004
Snohomish	21	23.5	236,205	291,658
Skamania	22	23.2	4,576	5,637
Skamania	23	23.0	4,576	5,628
Whatcom	24	22.7	73,893	90,665
Benton	25	22.6	55,963	68,618
Snohomish	26	21.4	236,205	286,659
Grant	27	21.3	29,081	35,286
Skagit	28	21.0	42,681	51,660
Pend Oreille	29	20.9	6,608	7,989
Grant	30	20.6	29,081	35,083
Skagit	31	20.6	42,681	51,473
Stevens	32	20.2	17,599	21,156
Pend Oreille	33	20.1	6,608	7,936
Stevens	34	20.1	17,599	21,133
Pierce	35	18.7	277,060	328,924
Chelan	36	17.6	30,407	35,755
Pierce	37	17.4	277,060	325,375
Whitman	38	17.2	16,676	19,548
Okanogan	39	17.0	19,085	22,338
Kitsap	40	16.9	92,644	108,282
Ferry	41	16.6	3,775	4,403
Chelan	42	16.6	30,407	35,465
Spokane	43	16.6	175,005	204,023
Okanogan	44	16.6	19,085	22,245
Ferry	45	16.4	3,775	4,394
King	46	16.4	742,237	863,745
Clallam	47	16.3	30,683	35,690
Wahkiakum	48	16.2	1,792	2,083
Clallam	49	16.0	30,683	35,582
Kitsap	50	15.9	92,644	107,367
Whitman	51	15.9	16,676	19,323
Wahkiakum	52	15.3	1,792	2,067
Lewis	53	15.3	29,585	34,112
Spokane	54	15.1	175,005	201,434
Lewis	55	15.1	29,585	34,050
King	56	14.7	742,237	851,261
Klickitat	57	14.2	8,633	9,857
Klickitat	58	13.4	8,633	9,786
Cowlitz	59	12.5	38,624	43,451
Cowlitz	60	12.5	38,624	43,450
Pacific	61	11.9	13,991	15,662
Walla Walla	62	11.8	21,147	23,642
Pacific	63	11.1	13,991	15,547
Walla Walla	64	10.9	21,147	23,451
Lincoln	65	9.5	5,298	5,803
Lincoln	66	9.0	5,298	5,776
Yakima	67	8.6	79,174	86,006
Adams	68	8.5	5,773	6,264
Grays Harbor	69	8.4	32,489	35,208
Asotin	70	8.4	9,111	9,872
Grays Harbor	71	8.2	32,489	35,166
Asotin	72	8.2	9,111	9,858
Adams	73	8.1	5,773	6,242
Yakima	74	8.0	79,174	85,474
Columbia	75	5.8	2,018	2,136
Columbia	76	5.6	2,018	2,132
Garfield	77	-4.3	1,288	1,233
Garfield	78	-5.7	1,288	1,215