County	Number of Crashes	Total Population	Crashes per 1,000 Residents	Crashes per 1,000 Bike Commuters
Santa Cruz	210	264808	0.79	52.5
San Mateo	255	729543	0.35	61.6
Los Angeles	4574	9893481	0.46	122.1
Orange	1210	3051771	0.4	85.8
Contra Costa	225	1065794	0.21	85.8
San Diego	1026	3138265	0.33	102.6
Alameda	706	1535248	0.46	55.1
Sonoma	157	487469	0.32	65.6
Sutter	32	94787	0.34	202.5
Stanislaus	186	518321	0.36	152.2
Butte	78	220542	0.35	32.6
San Bernardino	442	2056915	0.21	139.2
Santa Clara	688	1812208	0.38	47.8
San Francisco	189	817501	0.23	12.1
Santa Barbara	266	427288	0.62	31.6
Sacramento	602	1435207	0.42	83.4
Merced	99	258707	0.38	299.1
Humboldt	49	134613	0.36	41.8
Monterey	102	420569	0.24	72.5
Marin	131	254643	0.51	67.5
Yuba	19	72574	0.26	166.7
Placer	59	355924	0.17	55.3
Riverside	410	2228528	0.18	123.0
San Joaquin	85	693177	0.12	60.6
Yolo	107	202288	0.53	13.3
Ventura	205	829017	0.25	73.4
Kern	173	848204	0.2	123.7
Fresno	65	939605	0.07	23.9
San Luis Obispo	129	272094	0.47	50.9
Tulare	88	446644	0.2	98.9
Imperial	22	175201	0.13	74.8
Siskiyou	9	44503	0.2	176.5
Napa	55	137837	0.4	99.8
Mendocino	20	87497	0.23	45.5
Solano	101	417258	0.24	113.0
San Benito	13	56115	0.23	79.3
Tehama	12	63241	0.19	171.4
Madera	23	151435	0.15	114.4
Del Norte	7	28357	0.25	86.4
Shasta	11	177966	0.06	21.7
Lake	7	64260	0.11	152.2
Sierra	1	3127	0.32	62.5
Nevada	14	98509	0.14	55.6
Kings	28	151806	0.18	126.7
Inyo	6	18482	0.32	17.6
Glenn	4	28054	0.14	66.7
El Dorado	14	180982	0.08	28.3
Lassen	4	34018	0.12	50.0
Calaveras	2	45147	0.04	83.3
Modoc	1	9468	0.11	14.1
Mono	4	14217	0.28	20.7
Plumas	1	19586	0.05	21.3
Tuolumne	3	54728	0.05	29.7
Amador	1	37422	0.03	No data