County-to-County Commuting in the San Francisco Bay Area, 1960-2030
1960-2000 Decennial Census, and MTC Forecasts based on ABAG Projections 2003

County of Residence	County of Work	1960	1970	1980	1990	2000	2010	2020	2030
San Francisco	San Francisco	322,000	283,184	284,297	299,926	321,913	328,563	362,044	402,829
San Francisco	San Mateo	12,000	18,349	21,443	32,170	43,305	46,294	50,872	57,071
San Francisco	Santa Clara	1,000	2,972	3,721	7,992	15,868	18,049	16,074	16,329
San Francisco	Alameda	6,000	7,874	15,181	18,822	20,835	20,746	21,219	22,810
San Francisco	Contra Costa	1,000	1,129	2,430	5,747	4,568	4,194	4,473	5,276
San Francisco	Solano	0	362	349	377	418	338	400	531
San Francisco	Napa	0	77	14	117	237	213	267	342
San Francisco	Sonoma	0	120	355	468	835	690	1,223	2,272
San Francisco	Marin	2,000	1,419	3,332	5,006	6,450	5,670	7,529	9,865
San Francisco	Elsewhere	NA	NA	348	784	781	701	856	949
San Francisco	TOTAL	344,000	315,486	331,470	371,409	415,210	425,458	464,957	518,274
San Mateo	San Francisco	59,000	67,723	78,706	78,832	71,700	72,639	83,367	87,485
San Mateo	San Mateo	99,000	139,653	180,143	199,760	206,053	218,915	252,555	267,718
San Mateo	Santa Clara	14,000	20,933	33,853	44,001	55,470	61,689	61,887	61,905
San Mateo	Alameda	2,000	3,640	6,686	13,188	14,783	14,755	16,489	17,148
San Mateo	Contra Costa	0	474	738	3,715	1,789	1,628	1,853	2,082
San Mateo	Solano	0	145	220	183	303	237	297	382
San Mateo	Napa	0	11	18	0	141	124	165	204
San Mateo	Sonoma	0	50	115	110	345	285	542	962
San Mateo	Marin	0	335	643	1,406	973	847	1,179	1,480
San Mateo	Elsewhere	NA	NA	394	912	658	575	765	820
San Mateo	TOTAL	174,000	232,964	301,516	342,107	352,215	371,694	419,099	440,186
Santa Clara	San Francisco	7,000	9,052	7,438	7,536	7,946	7,302	10,681	12,543
Santa Clara	San Mateo	13,000	28,060	27,676	31,896	40,665	39,512	53,313	60,875
Santa Clara	Santa Clara	207,000	354,028	597,764	710,582	727,890	762,418	932,331	1,031,156
Santa Clara	Alameda	2,000	6,476	9,907	24,163	37,011	35,483	49,440	57,864
Santa Clara	Contra Costa	0	507	795	2,299	2,824	2,355	3,370	4,160
Santa Clara	Solano	0	121	64	121	581	406	633	908
Santa Clara	Napa	0	75	74	34	161	129	207	278
Santa Clara	Sonoma	0	91	149	116	505	379	873	1,710
Santa Clara	Marin	0	214	30	421	578	467	832	1,179
Santa Clara	Elsewhere	NA	NA	3,058	6,512	6,740	5,917	8,834	9,493
Santa Clara	TOTAL	229,000	398,624	646,955	783,680	824,901	854,368	1,060,514	1,180,166
Alameda	San Francisco	25,000	35,197	50,895	60,505	72,037	81,868	100,935	118,024
Alameda	San Mateo	3,000	11,378	15,125	26,633	33,501	40,081	47,134	54,397
Alameda	Santa Clara	4,000	10,684	27,474	53,139	69,669	89,267	91,411	99,553
Alameda	Alameda	310,000	342,111	387,411	433,159	453,859	516,337	600,705	692,298
Alameda	Contra Costa	8,000	13,016	18,913	34,613	35,518	38,214	46,090	56,546
Alameda	Solano	1,000	1,008	1,351	1,309	1,883	1,685	2,250	3,203
Alameda	Napa	0	235	72	211	340	346	492	677
Alameda	Sonoma	0	137	288	487	867	810	1,609	3,146
Alameda	Marin	1,000	647	1,119	2,723	3,745	3,653	5,492	7,684
Alameda	Elsewhere	NA	NA	1,137	2,510	3,558	3,615	4,858	5,601
Alameda	TOTAL	352,000	414,413	503,785	615,289	674,977	775,876	900,976	1,041,129
Contra Costa	San Francisco	10,000	20,491	38,236	47,678	49,524	63,508	72,960	74,767
Contra Costa	San Mateo	0	2,895	3,972	7,867	9,279	12,648	14,656	15,345
Contra Costa	Santa Clara	0	1,540	2,389	6,010	10,145	15,169	14,710	14,382
Contra Costa	Alameda	35,000	48,640	68,511	83,446	95,939	120,274	131,035	134,261
Contra Costa	Contra Costa	94,000	127,645	177,015	237,511	254,768	297,617	344,704	387,680
Contra Costa	Solano	2,000	2,152	3,648	6,060	6,506	6,800	8,433	10,394
Contra Costa	Napa	0	253	343	453	1,094	1,281	1,703	2,050
Contra Costa	Sonoma	0	169	175	428	1,037	1,081	2,018	3,487
Contra Costa	Marin	0	996	1,687	3,280	6,803	7,208	10,097	12,286
Contra Costa	Elsewhere	NA	NA	1,220	2,448	3,727	4,269	5,392	5,542
Contra Costa	TOTAL	141,000	204,781	297,196	395,181	438,822	529,855	605,708	660,194
Solano	San Francisco	1,000	1,249	4,371	9,805	10,385	15,681	17,161	16,672
Solano	San Mateo	0	359	827	2,577	2,880	4,692	5,265	5,185
Solano	Santa Clara	0	357	252	1,000	1,605	2,890	2,699	2,449
Solano	Alameda	1,000	1,450	4,817	10,326	12,587	18,683	19,162	18,099
Solano	Contra Costa	1,000	3,246	10,242	20,899	22,018	29,757	32,138	34,595
Solano	Solano	45,000	51,385	72,142	93,704	99,205	121,808	144,650	170,618
Solano	Napa	1,000	2,958	2,846	5,492	8,256	11,589	14,783	16,763
Solano	Sonoma	0	146	412	1,105	2,334	2,843	5,022	8,165
Solano	Marin	1,000	507	964	1,913	4,418	5,774	7,981	9,373
Solano	Elsewhere	NA	NA	3,113	6,533	8,918	13,436	17,005	16,908
Solano	TOTAL	50,000	61,657	99,986	153,354	172,606	227,153	265,866	298,827
Napa	San Francisco	0	458	549	1,044	1,305	1,689	1,633	1,443
Napa	San Mateo	0	119	149	286	462	626	609	546
Napa	Santa Clara	0	80	95	103	365	534	433	360
Napa	Alameda	0	796	880	1,087	1,229	1,545	1,392	1,205
Napa	Contra Costa	0	914	1,126	1,807	1,974	2,264	2,149	2,114
Napa	Solano	4,000	4,853	5,572	5,805	3,756	3,832	4,025	4,319
Napa	Napa	17,000	20,295	31,808	37,464	44,330	49,624	54,329	55,884
Napa	Sonoma	0	485	1,124	1,630	2,146	2,250	3,470	5,116
Napa	Marin	0	170	215	549	894	1,001	1,236	1,327
Napa	Elsewhere	NA	NA	144	438	529	584	647	621
Napa	TOTAL	21,000	28,170	41,662	50,213	56,990	63,949	69,923	72,935
Sonoma	San Francisco	1,000	3,652	6,489	8,357	8,192	11,750	8,464	5,589
Sonoma	San Mateo	0	268	883	1,528	1,633	2,460	1,768	1,178
Sonoma	Santa Clara	0	58	100	388	1,247	2,037	1,189	719
Sonoma	Alameda	0	364	826	1,839	2,367	3,323	2,224	1,429
Sonoma	Contra Costa	0	357	647	1,425	1,776	2,286	1,623	1,193
Sonoma	Solano	1,000	753	895	1,310	1,299	1,455	1,138	915
Sonoma	Napa	0	470	1,238	2,026	3,030	3,751	3,062	2,343
Sonoma	Sonoma	44,000	55,769	105,957	154,324	184,421	219,132	250,503	272,102
Sonoma	Marin	2,000	4,313	9,594	15,352	18,336	22,674	21,163	17,133
Sonoma	Elsewhere	NA	NA	681	1,307	1,323	1,386	1,276	1,055
Sonoma	TOTAL	48,000	66,004	127,310	187,856	223,624	270,254	292,410	303,656
Marin	San Francisco	19,000	31,191	37,662	33,656	30,893	37,572	34,424	31,034
Marin	San Mateo	0	2,201	2,591	3,212	2,614	3,364	3,082	2,810
Marin	Santa Clara	0	719	400	564	952	1,287	966	810
Marin	Alameda	1,000	2,312	3,526	5,256	4,729	5,613	4,707	4,066
Marin	Contra Costa	1,000	935	1,555	3,428	2,740	3,101	2,768	2,750
Marin	Solano	0	283	556	845	610	594	575	621
Marin	Napa	0	115	104	189	380	410	425	443
Marin	Sonoma	0	631	2,079	3,179	3,493	3,537	5,107	7,568
Marin	Marin	35,000	42,998	65,830	72,941	78,684	83,828	93,540	100,260
Marin	Elsewhere	NA	NA	191	237	469	491	506	467
Marin	TOTAL	56,000	81,385	114,494	123,507	125,564	139,797	146,100	150,829
Bay Area	San Francisco	444,000	452,197	508,643	547,339	573,895	620,572	691,669	750,386
Bay Area	San Mateo	127,000	203,282	252,809	305,929	340,392	368,592	429,254	465,125
Bay Area	Santa Clara	226,000	391,371	666,048	823,779	883,211	953,340	1,121,700	1,227,663
Bay Area	Alameda	357,000	413,663	497,745	591,286	643,339	736,759	846,373	949,180
Bay Area	Contra Costa	105,000	148,223	213,461	311,444	327,975	381,416	439,168	496,396
Bay Area	Solano	53,000	61,062	84,797	109,714	114,561	137,155	162,401	191,891
Bay Area	Napa	18,000	24,489	36,517	45,986	57,969	67,467	75,433	78,984
Bay Area	Sonoma	44,000	57,598	110,654	161,847	195,983	231,007	270,367	304,528
Bay Area	Marin	41,000	51,599	83,414	103,591	120,881	131,122	149,049	160,587
Bay Area	Elsewhere	NA	NA	10,286	21,681	26,703	30,974	40,139	41,456
Bay Area	TOTAL	1,415,000	1,803,484	2,464,374	3,022,596	3,284,909	3,658,404	4,225,553	4,666,196
Elsewhere	San Francisco	NA	NA	2,345	3,496	5,358	8,059	8,572	9,516
Elsewhere	San Mateo	NA	NA	1,554	3,813	6,466	9,847	10,431	12,032
Elsewhere	Santa Clara	NA	NA	16,745	33,081	52,034	84,296	83,280	95,932
Elsewhere	Alameda	NA	NA	4,507	20,292	32,768	49,398	52,911	61,852
Elsewhere	Contra Costa	NA	NA	1,184	5,727	7,514	10,208	11,472	14,004
Elsewhere	Solano	NA	NA	2,511	6,020	7,448	7,800	8,668	11,409
Elsewhere	Napa	NA	NA	381	821	1,543	2,152	2,340	2,621
Elsewhere	Sonoma	NA	NA	876	1,928	3,301	4,922	6,934	10,253
Elsewhere	Marin	NA	NA	179	587	997	1,324	1,684	2,158
Elsewhere	Bay Area	NA	NA	30,282	75,765	117,429	178,006	186,292	219,777
TOTAL	San Francisco	444,000	452,197	510,988	550,835	579,253	628,631	700,241	759,902
TOTAL	San Mateo	127,000	203,282	254,363	309,742	346,858	378,439	439,685	477,157
TOTAL	Santa Clara	226,000	391,371	682,793	856,860	935,245	1,037,636	1,204,980	1,323,595
TOTAL	Alameda	357,000	413,663	502,252	611,578	676,107	786,157	899,284	1,011,032
TOTAL	Contra Costa	105,000	148,223	214,645	317,171	335,489	391,624	450,640	510,400
TOTAL	Solano	53,000	61,062	87,308	115,734	122,009	144,955	171,069	203,300
TOTAL	Napa	18,000	24,489	36,898	46,807	59,512	69,619	77,773	81,605
TOTAL	Sonoma	44,000	57,598	111,530	163,775	199,284	235,929	277,301	314,781
TOTAL	Marin	41,000	51,599	83,593	104,178	121,878	132,446	150,733	162,745
TOTAL	Bay Area	1,415,000	1,803,484	2,484,370	3,076,680	3,375,635	3,805,436	4,371,706	4,844,517

Notes:
Data values represent average daily commuters for a typical spring weekday. For purposes here, commuters include workers working at home, as well as all commuters by any means of transportation. These data values do not represent home-based work trips.

Elsewhere is defined as Bay Area neighbor counties, including: Mendocino, Colusa, Yolo, Sacramento, Placer, San Joaquin, Stanislaus, Merced, San Benito, Monterey and Santa Cruz Counties. Interregional commute data was first collected in the 1980 Decennial Census.

TOTAL is defined as the nine county San Francisco Bay Area and the 12 neighbor counties.

Sources:
1960 Census data was adapted by staff of the Bay Area Transportation Study Commission (BATSC). 1970, 1980, 1990 and 2000 Census data was derived from journey-to-work datasets, summarized by MTC staff. 2010, 2020 and 2030 data are sketch planning commuter forecasts prepared by MTC staff using the Association of Bay Area Government's Projections 2003 data, and Census 2000 journey-to-work data.

These commuter forecasts are summarized in the MTC report "Commuter Forecasts for the San Francisco Bay Area: 1990-2030 (Based on ABAG Projections 2003 and Census 2000): Data Summary" (May 2004). This report is available in PDF format, at: Commuter_Forecasts_Data_Summary_May2004.pdf

The full report, in WORD and EXCEL formats, is included in the downloadable archive ("zipped") file: Commuter2003.zip