CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 1. Profile of Selected 1990 and 2000 Characteristics
Geographic Area: Alameda County, California
Subject	1990 Census		Census 2000		Change 1990 to 2000
	Number	Percent	Number	Percent	Number	Percent
POPULATION
Total population	1,279,182	100.0	1,443,741	100.0	164,559	12.9
In households	1,242,348	97.1	1,416,090	98.1	173,742	14.0
In group quarters	36,834	2.9	27,651	1.9	-9,183	-24.9
HOUSEHOLD SIZE
Total households	480,079	100.0	523,787	100.0	43,708	9.1
1-person household	128,370	26.7	136,028	26.0	7,658	6.0
2-person household	150,526	31.4	156,621	29.9	6,095	4.0
3-person household	81,580	17.0	87,051	16.6	5,471	6.7
4-person household	66,434	13.8	75,661	14.4	9,227	13.9
5-or-more-person household	53,169	11.1	68,426	13.1	15,257	28.7
Mean number of persons per household	2.59	(X)	2.70	(X)	0.12	(X)
VEHICLES AVAILABLE1
Total households	480,079	100.0	523,787	100.0	43,708	9.1
No vehicle available	57,592	12.0	56,831	10.9	-761	-1.3
1 vehicle available	163,148	34.0	182,107	34.8	18,959	11.6
2 vehicles available	167,769	34.9	189,652	36.2	21,883	13.0
3 vehicles available	64,883	13.5	66,780	12.7	1,897	2.9
4 vehicles available	18,915	3.9	19,943	3.8	1,028	5.4
5 or more vehicles available	7,772	1.6	8,474	1.6	702	9.0
Mean vehicles per household	1.69	(X)	1.69	(X)	[ >0 ]	(X)
WORKERS BY SEX1
Workers 16 years and over	633,191	100.0	678,910	100.0	45,719	7.2
Male	343,396	54.2	362,100	53.3	18,704	5.4
Female	289,795	45.8	316,810	46.7	27,015	9.3
MEANS OF TRANSPORTATION TO WORK
Workers 16 years and over	633,191	100.0	678,910	100.0	45,719	7.2
Drove alone	422,775	66.8	450,496	66.4	27,721	6.6
Carpooled	80,773	12.8	93,652	13.8	12,879	15.9
Public transportation (including taxicab)	63,138	10.0	72,174	10.6	9,036	14.3
Bicycle or walked	33,055	5.2	30,304	4.5	-2,751	-8.3
Motorcycle or other means	8,564	1.4	8,343	1.2	-221	-2.6
Worked at home	24,886	3.9	23,941	3.5	-945	-3.8
TRAVEL TIME TO WORK
Workers who did not work at home	608,305	100.0	654,969	100.0	46,664	7.7
Less than 5 minutes	12,117	2.0	9,512	1.5	-2,605	-21.5
5 to 9 minutes	53,277	8.8	47,151	7.2	-6,126	-11.5
10 to 14 minutes	84,868	14.0	80,662	12.3	-4,206	-5.0
15 to 19 minutes	96,900	15.9	90,169	13.8	-6,731	-6.9
20 to 29 minutes	114,047	18.7	117,235	17.9	3,188	2.8
30 to 44 minutes	138,669	22.8	146,551	22.4	7,882	5.7
45 or more minutes	108,427	17.8	163,689	25.0	55,262	51.0
Mean travel time to work (minutes)	25.8	(X)	30.8	(X)	5.0	(X)
TIME LEAVING HOME TO GO TO WORK
Workers who did not work at home	608,305	100.0	654,969	100.0	46,664	7.7
5:00 a.m. to 6:59 a.m.	157,683	25.9	159,610	24.4	1,927	1.2
7:00 a.m. to 7:59 a.m.	179,786	29.6	186,020	28.4	6,234	3.5
8:00 a.m. to 8:59 a.m.	114,872	18.9	130,755	20.0	15,883	13.8
9:00 a.m. to 9:59 a.m.	41,097	6.8	53,000	8.1	11,903	29.0
10:00 a.m. to 11:59 a.m.	24,750	4.1	30,268	4.6	5,518	22.3
12:00 p.m. to 11:59 p.m.	74,471	12.2	71,712	10.9	-2,759	-3.7
12:00 a.m. to 4:59 a.m.	15,646	2.6	23,604	3.6	7,958	50.9
1See the entry for this item in the Technical Notes in the root directory or state subdirectories (filename: tech_notes.txt). >0Value is too near zero to display. (X)Not applicable. Source:U.S. Census Bureau. Census of Population and Housing, 1990 and 2000 long-form (sample) data.

CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 2. Profile of Selected 2000 Characteristics
Geographic Area: Alameda County, California
Subject	Census 2000
	Number	Percent
POPULATION BY AGE
Total population	1,443,741	100.0
Under 16 years	318,774	22.1
16 to 20 years	92,062	6.4
21 to 24 years	79,189	5.5
25 to 44 years	493,944	34.2
45 to 64 years	312,109	21.6
65 years and over	147,663	10.2
Mean age (years)	35.0	(X)
HOUSEHOLD INCOME IN 19991
Total households	523,787	100.0
Less than $15,000	64,441	12.3
$15,000 to 19,999	22,491	4.3
$20,000 to 24,999	24,020	4.6
$25,000 to 49,999	121,984	23.3
$50,000 to 74,999	103,553	19.8
$75,000 to 99,999	70,947	13.5
$100,000 or more	116,351	22.2
Mean household income (dollars)	72,629	(X)
Median household income (dollars)	55,946	(X)
Household Size by Vehicles Available1
Household Size		Mean vehicles per household	Vehicles available
			Total households	No vehicle	1 vehicle	2 vehicles	3 vehicles	4 or more vehicles
Total households		1.69	523,785	56,830	182,105	189,650	66,780	28,415
	Row percent	(X)	100.0	10.8	34.8	36.2	12.7	5.4
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
1-person household		0.95	136,030	29,560	88,780	14,235	2,340	1,110
	Row percent	(X)	100.0	21.7	65.3	10.5	1.7	0.8
	Column percent	(X)	26.0	52.0	48.8	7.5	3.5	3.9
2-person household		1.70	156,620	12,520	46,870	77,430	15,915	3,885
	Row percent	(X)	100.0	8.0	29.9	49.4	10.2	2.5
	Column percent	(X)	29.9	22.0	25.7	40.8	23.8	13.7
3-person household		1.95	87,050	5,970	21,355	37,325	17,690	4,715
	Row percent	(X)	100.0	6.9	24.5	42.9	20.3	5.4
	Column percent	(X)	16.6	10.5	11.7	19.7	26.5	16.6
4-or-more-person household		2.23	144,085	8,780	25,100	60,665	30,835	18,705
	Row percent	(X)	100.0	6.1	17.4	42.1	21.4	13.0
	Column percent	(X)	27.5	15.4	13.8	32.0	46.2	65.8
Means of Transportation to Work by Travel Time to Work1
Means of Transportation		Mean travel time to work (minutes)	Travel time to work
			Workers who did not work at home	Less than 10 minutes	10 to 19 minutes	20 to 29 minutes	30 to 44 minutes	45 or more minutes
Workers who did not work at home		30.8	654,970	56,665	170,830	117,235	146,550	163,690
	Row percent	(X)	100.0	8.7	26.1	17.9	22.4	25.0
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
Drove alone		28.7	450,495	41,355	130,360	87,330	96,730	94,720
	Row percent	(X)	100.0	9.2	28.9	19.4	21.5	21.0
	Column percent	(X)	68.8	73.0	76.3	74.5	66.0	57.9
Carpooled		32.5	93,650	5,545	22,005	15,955	24,195	25,950
	Row percent	(X)	100.0	5.9	23.5	17.0	25.8	27.7
	Column percent	(X)	14.3	9.8	12.9	13.6	16.5	15.9
Public transportation (including taxicab)		47.1	72,175	565	4,190	7,460	20,545	39,420
	Row percent	(X)	100.0	0.8	5.8	10.3	28.5	54.6
	Column percent	(X)	11.0	1.0	2.5	6.4	14.0	24.1
Bicycle or walked		16.0	30,305	8,385	12,410	5,150	3,045	1,310
	Row percent	(X)	100.0	27.7	41.0	17.0	10.0	4.3
	Column percent	(X)	4.6	14.8	7.3	4.4	2.1	0.8
Motorcycle or other means		36.8	8,345	810	1,870	1,340	2,035	2,290
	Row percent	(X)	100.0	9.7	22.4	16.1	24.4	27.4
	Column percent	(X)	1.3	1.4	1.1	1.1	1.4	1.4
1See the entry for this item in the Technical Notes in the root directory or state subdirectories (filename: tech_notes.txt). (X)Not applicable. Source:U.S. Census Bureau. Census of Population and Housing, 1990 and 2000 long-form (sample) data.