California counties (58)

Alameda	Alpine	Amador	Butte
Calaveras	Colusa	Contra Costa	Del Norte
El Dorado	Fresno	Glenn	Humboldt
Imperial	Inyo	Kern	Kings
Lake	Lassen	Los Angeles	Madera
Marin	Mariposa	Mendocino	Merced
Modoc	Mono	Monterey	Napa
Nevada	Orange	Placer	Plumas
Riverside	Sacramento	San Benito	San Bernardino
San Diego	San Francisco	San Joaquin	San Luis Obispo
San Mateo	Santa Barbara	Santa Clara	Santa Cruz
Shasta	Sierra	Siskiyou	Solano
Sonoma	Stanislaus	Sutter	Tehama
Trinity	Tulare	Tuolumne	Ventura
Yolo	Yuba

Enrollment by county and year

	2015	2016	2017	2018	2019	2020	2021	2022
State of Califonria	6,210,828	6,201,619	6,205,739	6,200,546	6,169,652	6,148,300	5,969,412	5,834,462
Alameda	223,883	225,117	225,996	227,511	227,200	226,694	221,968	213,874
Alpine	89	85	82	80	79	70	73	61
Amador	4,020	4,046	4,074	4,134	4,147	4,162	3,906	4,031
Butte	30,932	31,071	31,279	31,657	31,751	30,031	29,057	28,614
Calaveras	5,753	5,643	5,583	5,450	5,320	5,302	5,023	5,242
Colusa	4,586	4,628	4,670	4,627	4,675	4,718	4,652	4,734
Contra Costa	174,213	175,759	176,729	177,412	177,295	177,641	171,791	166,585
Del Norte	4,121	4,160	4,258	4,228	4,266	4,327	4,247	4,195
El Dorado	26,913	26,930	26,969	27,822	28,163	31,067	29,419	30,470
Fresno	199,099	199,981	201,780	203,894	206,330	207,537	204,648	202,889
Glenn	5,669	5,628	5,625	5,580	5,672	6,040	6,072	6,268
Humboldt	18,068	18,308	18,187	18,440	17,986	18,036	17,455	17,496
Imperial	37,191	37,424	37,573	37,716	37,703	37,373	36,605	36,101
Inyo	5,194	4,698	4,550	4,497	4,495	4,473	4,058	3,797
Kern	179,879	180,969	184,754	189,429	191,966	198,607	194,990	194,380
Kings	28,653	28,368	28,883	29,202	29,565	29,949	29,677	29,153
Lake	8,342	8,437	9,433	9,549	9,643	9,849	9,536	9,923
Lassen	4,121	4,056	3,903	3,452	3,492	3,811	3,837	3,807
Los Angeles	1,530,600	1,514,802	1,502,860	1,486,140	1,458,534	1,431,660	1,385,199	1,327,262
Madera	30,865	31,077	31,468	31,725	31,923	32,139	31,490	31,676
Marin	33,020	33,460	33,527	33,623	33,297	33,367	31,776	30,450
Mariposa	1,868	1,907	1,888	1,862	1,880	1,868	1,797	1,843
Mendocino	13,009	13,209	13,165	13,197	13,112	13,210	12,846	12,672
Merced	56,997	57,458	58,255	58,796	59,143	59,531	58,648	59,061
Modoc	1,436	1,471	1,445	1,411	1,393	1,394	1,366	1,381
Mono	2,029	2,011	1,998	1,890	1,912	1,933	1,722	1,702
Monterey	75,997	76,768	77,517	77,945	77,917	77,337	75,587	73,809
Napa	20,978	20,794	20,546	20,384	20,200	19,999	19,518	18,993
Nevada	12,260	11,971	11,577	11,400	11,314	11,504	11,062	10,730
Orange	496,719	492,591	489,968	485,373	478,348	472,926	451,726	439,600
Placer	69,560	70,139	71,394	72,599	73,354	75,083	73,156	73,557
Plumas	2,161	2,196	2,156	2,169	2,206	2,219	2,054	2,084
Riverside	425,225	427,011	427,970	428,460	427,942	430,892	420,464	416,517
Sacramento	240,208	241,908	243,583	245,006	245,799	248,638	244,443	239,879
San Benito	11,161	11,114	11,164	11,253	11,426	11,542	11,207	11,324
San Bernardino	407,323	405,615	403,771	400,481	405,340	406,404	398,414	397,276
San Diego	502,352	503,280	504,032	506,900	505,042	501,615	484,771	474,738
San Francisco	58,388	58,973	60,252	60,512	60,970	61,699	59,316	56,257
San Joaquin	142,571	144,253	147,327	148,726	150,836	152,142	148,538	147,781
San Luis Obispo	34,768	34,860	34,785	34,730	34,512	34,380	32,573	32,101
San Mateo	94,986	95,277	95,382	94,908	94,017	93,174	89,793	85,648
Santa Barbara	68,578	69,062	69,058	69,744	69,372	68,999	66,908	67,015
Santa Clara	276,306	274,489	272,828	271,698	266,743	262,703	251,374	239,105
Santa Cruz	40,415	40,286	40,310	40,241	40,097	40,505	39,313	38,556
Shasta	26,522	26,186	26,298	26,735	26,732	27,020	26,078	26,236
Sierra	372	381	376	407	407	432	395	394
Siskiyou	5,726	5,804	5,879	5,934	6,096	6,066	5,904	5,864
Solano	63,713	63,579	63,526	63,420	63,064	62,847	60,416	59,487
Sonoma	70,748	70,748	70,553	70,086	69,388	67,804	66,038	64,431
Stanislaus	106,689	107,424	109,274	109,780	110,131	110,150	107,916	106,844
Sutter	21,456	21,689	22,628	23,683	24,800	23,298	23,666	24,425
Tehama	10,570	10,700	10,814	10,950	10,907	11,090	10,804	10,874
Trinity	1,517	1,509	1,652	1,584	1,597	1,579	1,585	1,519
Tulare	101,880	102,353	103,224	104,049	103,928	105,011	103,569	103,565
Tuolumne	6,120	5,999	6,093	6,070	6,100	6,042	5,682	5,875
Ventura	141,762	140,422	138,952	137,612	135,585	135,186	130,974	127,959
Yolo	29,272	29,592	29,750	29,998	30,008	30,493	29,729	29,363
Yuba	13,975	13,943	14,166	14,385	14,532	14,732	14,581	14,989