Check also Operating systems market share trends by region :

areppim line chart and statistics of trends of Operating systems market share in North America since 2008. Microsoft Win7 takes the largest share or 45% of the North American OS market. It is followed by Apple's MacOSX with 21%, and Win8.1 at 17%. Linux remains modest at 2%.

Microsoft Win7 takes the largest share or 45% of the North American OS market. It is followed by Apple's MacOSX with 21%, and Win8.1 at 17%. Linux remains modest at 2%.

Computer Operating System Percentage Market Share — North America
(As of May 2015)

Date	Win7	WinXP	WinVista	OS X	Win8	Win8.1	Linux	iOS	Win2003	Unknown	Win2000	Android	Playstation	Chrome OS		Win98	Win8.1 RT	Nintendo	WinME	Other
2008-07	0	67.43	19.83	8.49	0	0	0.93	0	0.51	0	2.14	0	0	0	0	0.34	0	0	0.24	0.08
2008-08	0	66.51	21.38	8.27	0	0	0.93	0	0.47	0	1.84	0	0	0	0	0.31	0	0	0.21	0.07
2008-09	0	65.6	21.51	9.09	0	0	0.85	0	0.5	0	1.88	0	0	0	0	0.3	0	0	0.2	0.07
2008-10	0	66.32	21.41	8.8	0	0	0.73	0	0.46	0	1.77	0	0	0	0	0.27	0	0	0.18	0.06
2008-11	0	69.98	20.12	7.14	0	0	0.56	0	0.33	0	1.43	0	0.04	0	0	0.19	0	0	0.14	0.06
2008-12	0	72.85	18.54	6.1	0	0	0.52	0	0.28	0.06	1.25	0	0.12	0	0	0.14	0	0	0.11	0.03
2009-01	0	68.14	22.65	6.63	0	0	0.58	0	0.29	0.17	1.13	0	0.13	0	0	0.13	0	0.02	0.11	0.02
2009-02	0.17	63.09	26.77	7.25	0	0	0.54	0	0.34	0.16	1.26	0	0.13	0	0	0.13	0	0.03	0.1	0.02
2009-03	0.26	59.34	29.47	8.03	0	0	0.58	0	0.33	0.21	1.29	0	0.18	0	0	0.14	0	0.04	0.11	0.02
2009-04	0.33	56.04	32.15	8.58	0	0	0.63	0	0.38	0.25	1.11	0	0.22	0	0	0.14	0	0.04	0.11	0.02
2009-05	0.51	55.34	32.81	8.14	0	0	0.61	0	0.83	0.31	0.97	0	0.21	0	0	0.13	0	0.03	0.1	0.02
2009-06	0.75	53.97	32.25	9.53	0	0	0.74	0	0.83	0.36	0.97	0	0.28	0	0	0.14	0	0.05	0.1	0.02
2009-07	0.95	53.08	33.58	9.6	0	0	0.75	0	0.4	0.17	0.85	0	0.34	0	0	0.12	0	0.05	0.1	0.02
2009-08	1.18	51.82	34.58	9.83	0	0	0.71	0	0.36	0.15	0.75	0	0.37	0	0	0.1	0	0.04	0.09	0.02
2009-09	1.56	51.38	34.44	10.12	0	0	0.71	0	0.39	0.14	0.7	0	0.3	0	0	0.1	0	0.05	0.08	0.02
2009-10	2.06	50.63	34.5	10.59	0	0	0.64	0	0.39	0.13	0.53	0	0.31	0	0	0.09	0	0.04	0.07	0.02
2009-11	4.28	48.67	33.47	11.29	0	0	0.66	0	0.41	0.22	0.44	0	0.33	0	0	0.08	0	0.05	0.07	0.02
2009-12	7.01	46.97	32.54	11.13	0	0	0.67	0	0.4	0.3	0.43	0	0.35	0	0	0.08	0	0.05	0.06	0.02
2010-01	9.64	45.56	30.58	11.94	0	0	0.69	0	0.37	0.26	0.4	0	0.36	0	0	0.07	0	0.05	0.05	0.02
2010-02	11.41	45.15	29.05	12.33	0	0	0.69	0	0.39	0.15	0.39	0	0.28	0	0	0.06	0	0.04	0.05	0.02
2010-03	13.37	44.88	27.92	11.81	0	0	0.7	0	0.38	0.15	0.37	0	0.25	0	0	0.06	0	0.05	0.05	0.02
2010-04	14.6	44.2	27.01	12.14	0	0	0.72	0	0.38	0.16	0.36	0	0.28	0	0	0.05	0	0.05	0.04	0.02
2010-05	15.88	43.55	26.51	11.93	0	0	0.72	0.08	0.37	0.17	0.34	0	0.29	0	0	0.05	0	0.05	0.04	0.02
2010-06	17.28	43.22	26	11.3	0	0	0.71	0.23	0.35	0.12	0.31	0	0.31	0	0	0.05	0	0.06	0.04	0.02
2010-07	19.45	41.39	25.91	11.1	0	0	0.7	0.29	0.34	0.11	0.26	0	0.3	0	0	0.04	0	0.06	0.03	0.01
2010-08	20.68	40.61	24.67	11.78	0	0	0.73	0.37	0.35	0.1	0.26	0	0.31	0	0	0.04	0	0.06	0.03	0.01
2010-09	21.98	40.14	23.06	12.55	0	0	0.71	0.43	0.37	0.1	0.24	0	0.29	0	0	0.04	0	0.05	0.03	0.01
2010-10	23.39	38.86	22.56	12.92	0	0	0.7	0.48	0.37	0.09	0.21	0	0.3	0	0	0.03	0	0.04	0.03	0.01
2010-11	24.66	37.47	22.2	13.37	0	0	0.7	0.54	0.38	0.08	0.2	0	0.29	0	0	0.03	0	0.05	0.03	0.02
2010-12	26.73	35.57	21.61	13.63	0	0	0.71	0.69	0.37	0.09	0.17	0	0.32	0	0	0.03	0	0.05	0.02	0.01
2011-01	28.38	34.61	20.65	13.76	0	0	0.7	0.9	0.33	0.08	0.16	0	0.32	0	0	0.03	0	0.05	0.02	0.01
2011-02	29.78	33.86	19.74	14.09	0	0	0.71	0.89	0.3	0.08	0.15	0.01	0.3	0	0	0.02	0	0.05	0.02	0.01
2011-03	31.32	33.52	18.79	13.8	0	0	0.72	0.94	0.3	0.08	0.14	0.01	0.29	0	0	0.02	0	0.04	0.02	0.01
2011-04	32.66	32.38	18.37	13.86	0	0	0.72	1.09	0.31	0.08	0.12	0.02	0.3	0	0	0.02	0	0.05	0.01	0.01
2011-05	33.59	32.04	17.59	13.78	0	0	0.76	1.26	0.32	0.08	0.1	0.03	0.35	0.01	0	0.02	0	0.05	0.01	0.01
2011-06	35.42	30.52	17.38	13.54	0	0	0.77	1.42	0.32	0.08	0.08	0.05	0.32	0.01	0	0.02	0	0.05	0.01	0.02
2011-07	37.12	28.48	17.17	13.73	0	0	0.79	1.68	0.29	0.07	0.1	0.08	0.34	0.01	0	0.03	0	0.06	0.01	0.04
2011-08	38.71	27.95	16.35	13.53	0	0	0.79	1.71	0.29	0.04	0.09	0.08	0.33	0.01	0	0.02	0	0.05	0.01	0.02
2011-09	40.1	27.3	15.47	13.73	0	0	0.76	1.74	0.28	0.05	0.08	0.09	0.3	0.01	0	0.01	0	0.04	0.01	0.02
2011-10	41.08	26.22	15.25	13.91	0	0	0.78	1.81	0.26	0.06	0.08	0.17	0.28	0.01	0	0.01	0	0.04	0.01	0.04
2011-11	40.44	27.58	15.56	12.91	0	0	0.73	1.88	0.27	0.03	0.07	0.17	0.24	0.01	0	0.01	0	0.04	0.01	0.06
2011-12	41.57	25.52	15.59	13.3	0	0	0.78	2.21	0.26	0.05	0.06	0.24	0.25	0.01	0	0.01	0	0.05	0.01	0.1
2012-01	42.2	24.57	14.78	13.79	0	0	0.75	2.75	0.29	0.05	0.06	0.32	0.24	0.01	0	0.01	0	0.04	0.01	0.13
2012-02	43.5	24.07	13.66	14.09	0	0	0.74	2.86	0.33	0.06	0.07	0.34	0.07	0.01	0	0.01	0	0.04	0.01	0.14
2012-03	45	23.31	12.26	14.3	0.02	0	0.78	3.07	0.32	0.12	0.06	0.36	0.11	0.01	0.11	0.01	0	0.04	0.01	0.13
2012-04	45.88	22.27	11.74	14.54	0.11	0	0.8	3.25	0.3	0.03	0.06	0.38	0.22	0.01	0.24	0.01	0	0.04	0	0.12
2012-05	47.07	21.5	11.46	14.13	0.12	0	0.79	3.47	0.3	0.03	0.05	0.42	0.23	0.01	0.25	0.01	0	0.04	0	0.11
2012-06	48.82	20.37	11.86	12.98	0.15	0	0.76	3.58	0.26	0.05	0.05	0.44	0.25	0.01	0.26	0	0	0.04	0	0.12
2012-07	50.03	19.09	11.81	12.64	0.17	0	0.82	3.9	0.25	0.06	0.04	0.46	0.26	0.01	0.3	0	0	0.04	0	0.11
2012-08	53.26	18.88	11.89	14.21	0.21	0	0.83	0	0.23	0.07	0.04	0.05	0	0.02	0.31	0	0	0	0	0.02
2012-09	53.25	18.46	11.63	14.84	0.24	0	0.88	0	0.23	0.05	0.04	0.03	0	0.02	0.3	0	0	0	0	0.02
2012-10	54.33	17.69	10.93	15.17	0.3	0	0.89	0	0.21	0.07	0.03	0.05	0	0.02	0.28	0	0	0	0	0.01
2012-11	54.4	17.16	10.61	15.04	1.19	0	0.87	0	0.2	0.08	0.03	0.08	0	0.02	0.29	0	0	0	0	0.01
2012-12	54.4	16.49	10.43	14.96	2.24	0	0.86	0	0.19	0.09	0.03	0.14	0	0.03	0.12	0	0	0	0	0.01
2013-01	54.17	16.31	10.19	14.85	3.07	0	0.83	0	0.2	0.1	0.03	0.19	0	0.04	0	0	0	0	0	0.01
2013-02	53.68	16.28	9.94	14.77	3.76	0	0.89	0	0.22	0.14	0.03	0.22	0	0.05	0	0	0	0	0	0.01
2013-03	54.22	15.71	9.5	14.28	4.75	0	0.92	0	0.25	0.17	0.03	0.11	0	0.06	0	0	0	0	0	0.01
2013-04	57.16	13.09	9.3	12.66	5.75	0	1.18	0	0.54	0.14	0.02	0.1	0	0.05	0	0	0	0	0	0.01
2013-05	55.36	13.7	8.92	13.04	6.14	0	1.76	0	0.63	0.19	0.02	0.16	0	0.06	0	0	0	0	0	0.01
2013-06	52.74	13.7	8.68	14.71	7.04	0	1.92	0	0.53	0.28	0.04	0.27	0	0.07	0	0	0	0	0	0.02
2013-07	52.62	13.45	8.57	14.63	7.95	0.03	1.57	0	0.49	0.17	0.03	0.37	0	0.08	0	0.02	0	0	0	0.01
2013-08	51.56	14.68	8.5	14.18	8.23	0.03	1.47	0	0.54	0.19	0.03	0.43	0	0.09	0	0.04	0	0	0	0.01
2013-09	50.93	16.33	8.78	13.07	8.33	0.03	1.03	0	0.6	0.21	0.04	0.47	0	0.1	0	0.04	0	0	0	0.02
2013-10	51.03	15.8	8.89	12.87	8.38	0.32	1.13	0	0.59	0.22	0.03	0.57	0	0.12	0	0.03	0	0	0	0.01
2013-11	51.84	14.6	7.87	13.25	8.09	1.37	1.2	0	0.47	0.24	0.04	0.8	0	0.14	0	0.03	0.03	0	0	0.02
2013-12	50.21	13.18	6.1	15.42	8.56	2.93	1.24	0	0.35	0.18	0.05	1.36	0	0.3	0	0.04	0.07	0	0	0.02
2014-01	49.05	12.34	5.46	16.71	8.24	4.36	1.23	0	0.23	0.1	0.04	1.63	0	0.43	0	0.04	0.11	0	0	0.02
2014-02	50.05	11.16	5.25	17.07	8.2	5.26	1.27	0	0.23	0.34	0.03	0.41	0	0.5	0	0.04	0.15	0	0	0.02
2014-03	48.34	14.46	4.87	16.2	7.71	5.67	1.21	0	0.24	0.52	0.05	0	0	0.51	0	0.03	0.16	0	0	0.02
2014-04	49.49	12.49	4.76	16.44	7.41	6.52	1.5	0	0.2	0.42	0.04	0	0	0.52	0	0.03	0.16	0	0	0.02
2014-05	48.87	12.16	4.72	15.83	7.11	7.94	1.86	0	0.23	0.47	0.04	0	0	0.54	0	0.03	0.16	0	0	0.02
2014-06	48.29	13.55	4.59	15.25	7.22	8.16	1.39	0	0.21	0.53	0.05	0	0	0.52	0	0.03	0.18	0	0	0.02
2014-07	48.72	12.46	5.09	14.93	7.4	8.5	1.48	0	0.19	0.46	0.05	0	0	0.48	0	0.03	0.18	0	0	0.02
2014-08	49.19	10.28	4.84	15.89	7.12	9.63	1.54	0	0.17	0.46	0.04	0	0	0.56	0	0.05	0.19	0	0	0.02
2014-09	47.58	11.92	4.29	16.43	6.38	10.11	1.57	0	0.2	0.54	0.05	0	0	0.68	0	0.04	0.18	0	0	0.02
2014-10	48.23	10.26	3.85	16.81	5.5	11.87	1.56	0	0.22	0.62	0.05	0	0	0.74	0	0.04	0.22	0	0	0.03
2014-11	50.41	6.7	4.42	16.48	4.21	14.06	1.39	0	0.26	0.79	0.06	0	0	0.82	0	0.04	0.34	0	0	0.03
2014-12	47.41	12.8	4.74	14.06	3.94	13.6	1.48	0	0.25	0.74	0.08	0	0	0.74	0	0.04	0.08	0	0	0.03
2015-01	48.18	7.9	3.79	16.44	3.6	16.38	1.58	0	0.2	0.78	0.07	0	0	0.97	0	0.05	0	0	0	0.06
2015-02	46.84	8.94	3.48	16.62	3.46	16.79	1.73	0	0.18	0.77	0.04	0	0	0.99	0	0.05	0	0	0	0.11
2015-03	46.65	6.83	3.12	18.2	3.48	17.35	2.28	0	0.16	0.76	0.03	0	0	0.99	0	0.03	0	0	0	0.12
2015-04	46.6	6.8	2.86	18.03	3.49	17.57	2.54	0	0.16	0.77	0.02	0	0	0.99	0	0.02	0	0	0	0.14
2015-05	44.99	6.55	2.79	20.9	3.15	17.15	2.18	0	0.19	0.83	0.03	0	0	1.03	0	0.04	0	0	0	0.17
Average change rate (last 12 months)	-0.7%	-5.0%	-4.3%	2.3%	-6.6%	6.6%	1.3%	n/a	-1.6%	4.9%	-2.4%	n/a	n/a	5.5%	n/a	2.4%	-100.0%	n/a	n/a	19.5%

Source: StatCounter Global Stats

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Computer Operating System Percentage Market Share — North America(As of May 2015)

Computer Operating System Percentage Market Share — North America
(As of May 2015)