CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000) Table 1. Profile of Selected 1990 and 2000 Characteristics
Geographic Area: Delaware County, Iowa
Subject	1990 Census		Census 2000		Change 1990 to 2000
	Number	Percent	Number	Percent	Number	Percent
POPULATION
Total population	18,035	100.0	18,404	100.0	369	2.0
In households	17,805	98.7	18,143	98.6	338	1.9
In group quarters	230	1.3	261	1.4	31	13.5
HOUSEHOLD SIZE
Total households	6,360	100.0	6,861	100.0	501	7.9
1-person household	1,397	22.0	1,561	22.8	164	11.7
2-person household	2,019	31.7	2,391	34.8	372	18.4
3-person household	912	14.3	995	14.5	83	9.1
4-person household	1,041	16.4	1,006	14.7	-35	-3.4
5-or-more-person household	991	15.6	908	13.2	-83	-8.4
Mean number of persons per household	2.80	(X)	2.64	(X)	-0.16	(X)
VEHICLES AVAILABLE1
Total households	6,360	100.0	6,861	100.0	501	7.9
No vehicle available	312	4.9	354	5.2	42	13.5
1 vehicle available	1,618	25.4	1,692	24.7	74	4.6
2 vehicles available	2,859	45.0	2,762	40.3	-97	-3.4
3 vehicles available	1,153	18.1	1,431	20.9	278	24.1
4 vehicles available	271	4.3	445	6.5	174	64.2
5 or more vehicles available	147	2.3	177	2.6	30	20.4
Mean vehicles per household	1.99	(X)	2.07	(X)	0.08	(X)
WORKERS BY SEX1
Workers 16 years and over	8,110	100.0	9,190	100.0	1,080	13.3
Male	4,616	56.9	4,980	54.2	364	7.9
Female	3,494	43.1	4,210	45.8	716	20.5
MEANS OF TRANSPORTATION TO WORK
Workers 16 years and over	8,110	100.0	9,191	100.0	1,081	13.3
Drove alone	5,165	63.7	6,770	73.7	1,605	31.1
Carpooled	964	11.9	869	9.5	-95	-9.9
Public transportation (including taxicab)	14	0.2	22	0.2	8	57.1
Bicycle or walked	615	7.6	360	3.9	-255	-41.5
Motorcycle or other means	57	0.7	60	0.7	3	5.3
Worked at home	1,295	16.0	1,110	12.1	-185	-14.3
TRAVEL TIME TO WORK
Workers who did not work at home	6,815	100.0	8,081	100.0	1,266	18.6
Less than 5 minutes	855	12.5	771	9.5	-84	-9.8
5 to 9 minutes	1,705	25.0	1,590	19.7	-115	-6.7
10 to 14 minutes	1,188	17.4	1,586	19.6	398	33.5
15 to 19 minutes	923	13.5	1,108	13.7	185	20.0
20 to 29 minutes	823	12.1	1,000	12.4	177	21.5
30 to 44 minutes	604	8.9	784	9.7	180	29.8
45 or more minutes	717	10.5	1,242	15.4	525	73.2
Mean travel time to work (minutes)	17.3	(X)	21.3	(X)	4.0	(X)
TIME LEAVING HOME TO GO TO WORK
Workers who did not work at home	6,815	100.0	8,081	100.0	1,266	18.6
5:00 a.m. to 6:59 a.m.	2,415	35.4	2,956	36.6	541	22.4
7:00 a.m. to 7:59 a.m.	2,134	31.3	2,383	29.5	249	11.7
8:00 a.m. to 8:59 a.m.	847	12.4	868	10.7	21	2.5
9:00 a.m. to 9:59 a.m.	195	2.9	249	3.1	54	27.7
10:00 a.m. to 11:59 a.m.	133	2.0	140	1.7	7	5.3
12:00 p.m. to 11:59 p.m.	867	12.7	1,115	13.8	248	28.6
12:00 a.m. to 4:59 a.m.	224	3.3	370	4.6	146	65.2
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: Delaware County, Iowa
Subject	Census 2000
	Number	Percent
POPULATION BY AGE
Total population	18,404	100.0
Under 16 years	4,654	25.3
16 to 20 years	1,347	7.3
21 to 24 years	619	3.4
25 to 44 years	5,101	27.7
45 to 64 years	3,921	21.3
65 years and over	2,762	15.0
Mean age (years)	36.8	(X)
HOUSEHOLD INCOME IN 19991
Total households	6,861	100.0
Less than $15,000	1,002	14.6
$15,000 to 19,999	575	8.4
$20,000 to 24,999	560	8.2
$25,000 to 49,999	2,366	34.5
$50,000 to 74,999	1,455	21.2
$75,000 to 99,999	523	7.6
$100,000 or more	380	5.5
Mean household income (dollars)	45,781	(X)
Median household income (dollars)	37,168	(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		2.07	6,860	355	1,690	2,760	1,430	620
	Row percent	(X)	100.0	5.2	24.6	40.2	20.8	9.0
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
1-person household		1.14	1,560	230	990	270	50	20
	Row percent	(X)	100.0	14.7	63.5	17.3	3.2	1.3
	Column percent	(X)	22.7	64.8	58.6	9.8	3.5	3.2
2-person household		2.06	2,390	70	435	1,330	430	125
	Row percent	(X)	100.0	2.9	18.2	55.6	18.0	5.2
	Column percent	(X)	34.8	19.7	25.7	48.2	30.1	20.2
3-person household		2.40	995	30	125	395	325	120
	Row percent	(X)	100.0	3.0	12.6	39.7	32.7	12.1
	Column percent	(X)	14.5	8.5	7.4	14.3	22.7	19.4
4-or-more-person household		2.69	1,915	20	140	770	625	355
	Row percent	(X)	100.0	1.0	7.3	40.2	32.6	18.5
	Column percent	(X)	27.9	5.6	8.3	27.9	43.7	57.3
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		21.3	8,080	2,360	2,695	1,000	785	1,240
	Row percent	(X)	100.0	29.2	33.4	12.4	9.7	15.3
	Column percent	(X)	100.0	100.0	100.0	100.0	100.0	100.0
Drove alone		20.4	6,770	1,960	2,390	870	605	945
	Row percent	(X)	100.0	29.0	35.3	12.9	8.9	14.0
	Column percent	(X)	83.8	83.1	88.7	87.0	77.1	76.2
Carpooled		31.4	870	115	235	110	150	255
	Row percent	(X)	100.0	13.2	27.0	12.6	17.2	29.3
	Column percent	(X)	10.8	4.9	8.7	11.0	19.1	20.6
Public transportation (including taxicab)		15.9	20	0	20	4	0	0
	Row percent	(X)	100.0	0.0	100.0	20.0	0.0	0.0
	Column percent	(X)	0.2	0.0	0.7	0.4	0.0	0.0
Bicycle or walked		13.2	360	275	45	0	4	35
	Row percent	(X)	100.0	76.4	12.5	0.0	1.1	9.7
	Column percent	(X)	4.5	11.7	1.7	0.0	0.5	2.8
Motorcycle or other means		30.2	60	10	10	10	20	10
	Row percent	(X)	100.0	16.7	16.7	16.7	33.3	16.7
	Column percent	(X)	0.7	0.4	0.4	1.0	2.5	0.8
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.