CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 1. Profile of Selected 1990 and 2000 Characteristics
Geographic Area: Grundy County, Iowa
Subject	1990 Census		Census 2000		Change 1990 to 2000
	Number	Percent	Number	Percent	Number	Percent
POPULATION
Total population	12,029	100.0	12,369	100.0	340	2.8
In households	11,832	98.4	12,196	98.6	364	3.1
In group quarters	197	1.6	173	1.4	-24	-12.2
HOUSEHOLD SIZE
Total households	4,790	100.0	4,964	100.0	174	3.6
1-person household	1,169	24.4	1,268	25.5	99	8.5
2-person household	1,819	38.0	1,939	39.1	120	6.6
3-person household	683	14.3	647	13.0	-36	-5.3
4-person household	680	14.2	678	13.7	-2	-0.3
5-or-more-person household	439	9.2	432	8.7	-7	-1.6
Mean number of persons per household	2.47	(X)	2.46	(X)	-0.01	(X)
VEHICLES AVAILABLE1
Total households	4,790	100.0	4,964	100.0	174	3.6
No vehicle available	240	5.0	209	4.2	-31	-12.9
1 vehicle available	1,361	28.4	1,337	26.9	-24	-1.8
2 vehicles available	2,001	41.8	2,148	43.3	147	7.3
3 vehicles available	891	18.6	961	19.4	70	7.9
4 vehicles available	224	4.7	206	4.1	-18	-8.0
5 or more vehicles available	73	1.5	103	2.1	30	41.1
Mean vehicles per household	1.95	(X)	1.99	(X)	0.05	(X)
WORKERS BY SEX1
Workers 16 years and over	5,348	100.0	6,080	100.0	732	13.7
Male	3,030	56.7	3,225	53.0	195	6.4
Female	2,318	43.3	2,850	46.9	532	23.0
MEANS OF TRANSPORTATION TO WORK
Workers 16 years and over	5,348	100.0	6,078	100.0	730	13.6
Drove alone	3,637	68.0	4,784	78.7	1,147	31.5
Carpooled	502	9.4	454	7.5	-48	-9.6
Public transportation (including taxicab)	14	0.3	4	0.1	-10	-71.4
Bicycle or walked	528	9.9	334	5.5	-194	-36.7
Motorcycle or other means	55	1.0	41	0.7	-14	-25.5
Worked at home	612	11.4	461	7.6	-151	-24.7
TRAVEL TIME TO WORK
Workers who did not work at home	4,736	100.0	5,617	100.0	881	18.6
Less than 5 minutes	699	14.8	732	13.0	33	4.7
5 to 9 minutes	1,176	24.8	1,057	18.8	-119	-10.1
10 to 14 minutes	550	11.6	646	11.5	96	17.5
15 to 19 minutes	394	8.3	658	11.7	264	67.0
20 to 29 minutes	801	16.9	1,102	19.6	301	37.6
30 to 44 minutes	748	15.8	992	17.7	244	32.6
45 or more minutes	368	7.8	430	7.7	62	16.8
Mean travel time to work (minutes)	17.4	(X)	20.6	(X)	3.2	(X)
TIME LEAVING HOME TO GO TO WORK
Workers who did not work at home	4,736	100.0	5,617	100.0	881	18.6
5:00 a.m. to 6:59 a.m.	1,360	28.7	1,691	30.1	331	24.3
7:00 a.m. to 7:59 a.m.	1,704	36.0	2,020	36.0	316	18.5
8:00 a.m. to 8:59 a.m.	592	12.5	717	12.8	125	21.1
9:00 a.m. to 9:59 a.m.	187	3.9	192	3.4	5	2.7
10:00 a.m. to 11:59 a.m.	117	2.5	147	2.6	30	25.6
12:00 p.m. to 11:59 p.m.	646	13.6	646	11.5	0	0.0
12:00 a.m. to 4:59 a.m.	130	2.7	204	3.6	74	56.9
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.

CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 2. Profile of Selected 2000 Characteristics
Geographic Area: Grundy County, Iowa
Subject	Census 2000
	Number	Percent
POPULATION BY AGE
Total population	12,369	100.0
Under 16 years	2,727	22.0
16 to 20 years	778	6.3
21 to 24 years	399	3.2
25 to 44 years	3,096	25.0
45 to 64 years	2,983	24.1
65 years and over	2,386	19.3
Mean age (years)	40.3	(X)
HOUSEHOLD INCOME IN 19991
Total households	4,964	100.0
Less than $15,000	586	11.8
$15,000 to 19,999	325	6.5
$20,000 to 24,999	360	7.3
$25,000 to 49,999	1,916	38.6
$50,000 to 74,999	1,101	22.2
$75,000 to 99,999	408	8.2
$100,000 or more	268	5.4
Mean household income (dollars)	47,405	(X)
Median household income (dollars)	39,396	(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		1.99	4,965	210	1,335	2,150	960	310
	Row percent	(X)	100.0	4.2	26.9	43.3	19.3	6.2
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
1-person household		1.13	1,270	150	865	210	25	20
	Row percent	(X)	100.0	11.8	68.1	16.5	2.0	1.6
	Column percent	(X)	25.6	71.4	64.8	9.8	2.6	6.5
2-person household		2.04	1,940	35	345	1,150	340	65
	Row percent	(X)	100.0	1.8	17.8	59.3	17.5	3.4
	Column percent	(X)	39.1	16.7	25.8	53.5	35.4	21.0
3-person household		2.42	645	15	65	280	225	60
	Row percent	(X)	100.0	2.3	10.1	43.4	34.9	9.3
	Column percent	(X)	13.0	7.1	4.9	13.0	23.4	19.4
4-or-more-person household		2.63	1,110	10	60	510	370	160
	Row percent	(X)	100.0	0.9	5.4	45.9	33.3	14.4
	Column percent	(X)	22.4	4.8	4.5	23.7	38.5	51.6
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		20.6	5,615	1,790	1,305	1,100	990	430
	Row percent	(X)	100.0	31.9	23.2	19.6	17.6	7.7
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
Drove alone		20.5	4,785	1,415	1,150	995	885	340
	Row percent	(X)	100.0	29.6	24.0	20.8	18.5	7.1
	Column percent	(X)	85.2	79.1	88.1	90.5	89.4	79.1
Carpooled		27.7	455	125	80	85	90	75
	Row percent	(X)	100.0	27.5	17.6	18.7	19.8	16.5
	Column percent	(X)	8.1	7.0	6.1	7.7	9.1	17.4
Public transportation (including taxicab)		62.5	4	4	0	0	0	4
	Row percent	(X)	100.0	100.0	0.0	0.0	0.0	100.0
	Column percent	(X)	0.1	0.2	0.0	0.0	0.0	0.9
Bicycle or walked		9.1	335	245	65	10	4	4
	Row percent	(X)	100.0	73.1	19.4	3.0	1.2	1.2
	Column percent	(X)	6.0	13.7	5.0	0.9	0.4	0.9
Motorcycle or other means		37.3	40	4	10	10	10	4
	Row percent	(X)	100.0	10.0	25.0	25.0	25.0	10.0
	Column percent	(X)	0.7	0.2	0.8	0.9	1.0	0.9
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.