CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 1. Profile of Selected 1990 and 2000 Characteristics
Geographic Area: Clarke County, Iowa
Subject	1990 Census		Census 2000		Change 1990 to 2000
	Number	Percent	Number	Percent	Number	Percent
POPULATION
Total population	8,287	100.0	9,133	100.0	846	10.2
In households	8,175	98.6	8,980	98.3	805	9.8
In group quarters	112	1.4	153	1.7	41	36.6
HOUSEHOLD SIZE
Total households	3,347	100.0	3,588	100.0	241	7.2
1-person household	889	26.6	927	25.8	38	4.3
2-person household	1,209	36.1	1,270	35.4	61	5.0
3-person household	470	14.0	562	15.7	92	19.6
4-person household	481	14.4	492	13.7	11	2.3
5-or-more-person household	298	8.9	337	9.4	39	13.1
Mean number of persons per household	2.44	(X)	2.50	(X)	0.06	(X)
VEHICLES AVAILABLE1
Total households	3,347	100.0	3,588	100.0	241	7.2
No vehicle available	206	6.2	225	6.3	19	9.2
1 vehicle available	957	28.6	985	27.5	28	2.9
2 vehicles available	1,219	36.4	1,400	39.0	181	14.8
3 vehicles available	680	20.3	608	16.9	-72	-10.6
4 vehicles available	204	6.1	253	7.1	49	24.0
5 or more vehicles available	81	2.4	117	3.3	36	44.4
Mean vehicles per household	2.00	(X)	2.01	(X)	0.02	(X)
WORKERS BY SEX1
Workers 16 years and over	3,718	100.0	4,475	100.0	757	20.4
Male	1,971	53.0	2,300	51.4	329	16.7
Female	1,747	47.0	2,175	48.6	428	24.5
MEANS OF TRANSPORTATION TO WORK
Workers 16 years and over	3,718	100.0	4,477	100.0	759	20.4
Drove alone	2,730	73.4	3,208	71.7	478	17.5
Carpooled	484	13.0	821	18.3	337	69.6
Public transportation (including taxicab)	20	0.5	32	0.7	12	60.0
Bicycle or walked	115	3.1	101	2.3	-14	-12.2
Motorcycle or other means	29	0.8	11	0.2	-18	-62.1
Worked at home	340	9.1	304	6.8	-36	-10.6
TRAVEL TIME TO WORK
Workers who did not work at home	3,378	100.0	4,173	100.0	795	23.5
Less than 5 minutes	354	10.5	433	10.4	79	22.3
5 to 9 minutes	973	28.8	982	23.5	9	0.9
10 to 14 minutes	515	15.2	668	16.0	153	29.7
15 to 19 minutes	447	13.2	479	11.5	32	7.2
20 to 29 minutes	409	12.1	451	10.8	42	10.3
30 to 44 minutes	223	6.6	416	10.0	193	86.5
45 or more minutes	457	13.5	744	17.8	287	62.8
Mean travel time to work (minutes)	18.5	(X)	23.3	(X)	4.7	(X)
TIME LEAVING HOME TO GO TO WORK
Workers who did not work at home	3,378	100.0	4,173	100.0	795	23.5
5:00 a.m. to 6:59 a.m.	1,277	37.8	1,546	37.0	269	21.1
7:00 a.m. to 7:59 a.m.	960	28.4	1,135	27.2	175	18.2
8:00 a.m. to 8:59 a.m.	483	14.3	435	10.4	-48	-9.9
9:00 a.m. to 9:59 a.m.	89	2.6	174	4.2	85	95.5
10:00 a.m. to 11:59 a.m.	76	2.2	84	2.0	8	10.5
12:00 p.m. to 11:59 p.m.	429	12.7	592	14.2	163	38.0
12:00 a.m. to 4:59 a.m.	64	1.9	207	5.0	143	223.4
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.

CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 2. Profile of Selected 2000 Characteristics
Geographic Area: Clarke County, Iowa
Subject	Census 2000
	Number	Percent
POPULATION BY AGE
Total population	9,133	100.0
Under 16 years	2,124	23.3
16 to 20 years	570	6.2
21 to 24 years	369	4.0
25 to 44 years	2,449	26.8
45 to 64 years	2,070	22.7
65 years and over	1,551	17.0
Mean age (years)	38.5	(X)
HOUSEHOLD INCOME IN 19991
Total households	3,588	100.0
Less than $15,000	579	16.1
$15,000 to 19,999	327	9.1
$20,000 to 24,999	379	10.6
$25,000 to 49,999	1,184	33.0
$50,000 to 74,999	746	20.8
$75,000 to 99,999	216	6.0
$100,000 or more	157	4.4
Mean household income (dollars)	41,063	(X)
Median household income (dollars)	34,474	(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		2.01	3,590	225	985	1,400	610	370
	Row percent	(X)	100.0	6.3	27.4	39.0	17.0	10.3
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
1-person household		1.09	925	170	540	185	25	4
	Row percent	(X)	100.0	18.4	58.4	20.0	2.7	0.4
	Column percent	(X)	25.8	75.6	54.8	13.2	4.1	1.1
2-person household		2.17	1,270	25	255	645	210	135
	Row percent	(X)	100.0	2.0	20.1	50.8	16.5	10.6
	Column percent	(X)	35.4	11.1	25.9	46.1	34.4	36.5
3-person household		2.37	560	10	80	245	145	75
	Row percent	(X)	100.0	1.8	14.3	43.8	25.9	13.4
	Column percent	(X)	15.6	4.4	8.1	17.5	23.8	20.3
4-or-more-person household		2.57	830	15	110	325	225	155
	Row percent	(X)	100.0	1.8	13.3	39.2	27.1	18.7
	Column percent	(X)	23.1	6.7	11.2	23.2	36.9	41.9
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		23.3	4,175	1,415	1,145	450	415	745
	Row percent	(X)	100.0	33.9	27.4	10.8	9.9	17.8
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
Drove alone		23.6	3,210	1,070	865	400	305	570
	Row percent	(X)	100.0	33.3	26.9	12.5	9.5	17.8
	Column percent	(X)	76.9	75.6	75.5	88.9	73.5	76.5
Carpooled		23.3	820	270	245	55	95	165
	Row percent	(X)	100.0	32.9	29.9	6.7	11.6	20.1
	Column percent	(X)	19.6	19.1	21.4	12.2	22.9	22.1
Public transportation (including taxicab)		30.2	30	4	15	0	0	10
	Row percent	(X)	100.0	13.3	50.0	0.0	0.0	33.3
	Column percent	(X)	0.7	0.3	1.3	0.0	0.0	1.3
Bicycle or walked		8.3	100	65	20	0	15	0
	Row percent	(X)	100.0	65.0	20.0	0.0	15.0	0.0
	Column percent	(X)	2.4	4.6	1.7	0.0	3.6	0.0
Motorcycle or other means		42.3	10	4	4	0	0	4
	Row percent	(X)	100.0	40.0	40.0	0.0	0.0	40.0
	Column percent	(X)	0.2	0.3	0.3	0.0	0.0	0.5
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.