CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000)
Geographic Area: Working in Polk County, Iowa
TABLE 1. SELECTED CHARACTERISTICS BY PLACE OF WORK, 1990 and 2000
Selected Characteristics (Universe: All Workers)		1990		2000		Change 1990 to 2000
Selected Characteristics (Universe: All Workers)		Number	Percent	Number	Percent	Number	Percent
Workers 16 years or over		203,482	100	234,065	100	30,583	15.0
Sex
Male		105,546	51.9	120,580	51.5	15,034	14.2
Female		97,936	48.1	113,490	48.5	15,554	15.9
Mode to work
Drove alone		157,617	77.5	191,955	82.0	34,338	21.8
2-person carpool		25,026	12.3	22,400	9.6	-2,626	-10.5
3-or-more-person carpool		5,220	2.6	4,220	1.8	-1,000	-19.2
Bus or trolley bus		4,378	2.2	3,550	1.5	-828	-18.9
All other transit¹		31	0.0	73	0.0	42	135.5
Bicycle or walked		4,875	2.4	4,415	1.9	-460	-9.4
Taxicab, motorcycle, or other mode		1,278	0.6	1,280	0.5	2	0.2
Worked at home		5,057	2.5	6,165	2.6	1,108	21.9
Travel time to work (Universe = Workers who did not work at home)
Less than 5		6,065	3.1	5,720	2.5	-345	-5.7
5 to 9		22,852	11.5	24,960	11.0	2,108	9.2
10 to 14		36,628	18.5	41,865	18.4	5,237	14.3
15 to 19		42,615	21.5	45,065	19.8	2,450	5.7
20 to 29		48,739	24.6	58,455	25.6	9,716	19.9
30 to 44		26,486	13.3	32,440	14.2	5,954	22.5
45- 59		8,577	4.3	10,360	4.5	1,783	20.8
60 or more		6,463	3.3	9,040	4.0	2,577	39.9
Mean travel time (minutes)		19.8	(X)	21.4	(X)	1.6	(X)
Median travel time (minutes)		19.0	(X)	16.0	(X)	-3.0	(X)

TABLE 2. MODE TO WORK BY TRAVEL TIME, 2000
(Universe = Workers who did not work at home)
	Mean travel time (mins.)	Total	Less than 10 minutes	10 to 19 minutes	20 to 29 minutes	30 to 44 minutes	45 -59 minutes	60 or more minutes
Total	21.4	227,900	30,680	86,930	58,455	32,440	10,360	9,040
Row percent		100	13.5	38.1	25.6	14.2	4.5	4.0
Column percent		100	100	100	100	100	100	100
Drove alone	20.7	191,955	25,660	75,790	50,415	26,005	7,485	6,605
Row percent		100	13.4	39.5	26.3	13.5	3.9	3.4
Column percent		84.2	83.6	87.2	86.2	80.2	72.2	73.1
2-person carpool	24.8	22,400	2,020	7,625	5,785	3,955	1,760	1,250
Row percent		100	9.0	34.0	25.8	17.7	7.9	5.6
Column percent		9.8	6.6	8.8	9.9	12.2	17.0	13.8
3+ carpool	30.9	4,220	285	1,225	680	940	545	545
Row percent		100	6.8	29.0	16.1	22.3	12.9	12.9
Column percent		1.9	0.9	1.4	1.2	2.9	5.3	6.0
Bus or trolley bus	31.3	3,550	50	590	1,040	1,135	480	265
Row percent		100	1.4	16.6	29.3	32.0	13.5	7.5
Column percent		1.6	0.2	0.7	1.8	3.5	4.6	2.9
All other transit¹	18.8	73	8	28	14	14	4	0
Row percent		100	0.0	0.0	0.0	0.0	0.0	0.0
Column percent		0.0	0.0	0.0	0.0	0.0	0.0	0.0
Bicycle or walked	11.8	4,415	2,475	1,235	325	220	4	149
Row percent		100	56.1	28.0	7.4	5.0	0.1	3.4
Column percent		1.9	8.1	1.4	0.6	0.7	0.0	1.6
All other modes¹	39.1	1,280	170	430	200	174	90	215
Row percent		100	13.3	33.6	15.6	13.6	7.0	16.8
Column percent		0.6	0.6	0.5	0.3	0.5	0.9	2.4
Notes:
1. See notes1.htm
2. Workers-at-work shown here differs from local employment in many ways. For more information, please read notes2.htm

CENSUS TRANSPORTATION PLANNING PACKAGE (CTPP 2000)
Geographic Area: Working in Polk County, Iowa
TABLE 3. MODE TO WORK BY VEHICLES AVAILABLE IN HOUSEHOLDS
Mode to Work (Universe = Workers living in households)				Workers living in households…
Mode to Work (Universe = Workers living in households)				Total	Without a vehicle	With 1 vehicle	With 2+ vehicles
Total				232,305	5,630	46,115	180,560
Drove alone				191,105	2,910	36,490	151,705
2-person carpool				22,290	660	4,955	16,675
3-or-more-person carpool				4,220	155	855	3,215
Bus or trolley bus				3,490	750	1,165	1,570
Streetcar, trolley car, subway, or elevated, Railroad or Ferryboat				75	0	25	42
Bicycle or walked				3,710	855	1,285	1,570
Taxicab, motorcycle or other means				1,280	200	275	805
Worked at Home				6,130	95	1,065	4,970

TABLE 4. SEX OF WORKER BY INDUSTRY¹ AND OCCUPATON¹
(Universe = All Workers)				All Workers	Sex
(Universe = All Workers)				All Workers	Male	Female
Workers 16 years and over				234,065	120,580	113,490
Industry
Agriculture, forestry, fishing and hunting and mining				1,280	915	365
Construction				14,405	13,060	1,340
Manufacturing				20,345	15,275	5,070
Wholesale trade				10,355	7,495	2,860
Retail trade				28,235	15,005	13,230
Transportation and warehousing and utilities				13,585	10,365	3,215
Information				8,965	4,450	4,515
Finance, insurance, real estate and rental and leasing				36,825	13,740	23,085
Profess., scientific, management, administrative, waste management				21,455	11,715	9,740
Educational, health and social services				40,285	9,030	31,255
Arts, entertainment, recreation, accommodation and food services				15,670	7,660	8,010
Other services (except public administration)				9,845	5,075	4,770
Public administration				12,295	6,325	5,970
Armed forces				520	465	55
Occupation
Management				21,650	12,960	8,690
Farmers and farm managers				475	415	60
Business and financial operations specialists				16,420	6,950	9,470
Computer and mathematical				8,430	5,355	3,075
Architecture and engineering				2,920	2,485	430
Life, physical and social science				1,970	990	975
Community and social service				3,505	1,455	2,050
Legal				2,725	1,605	1,120
Education, training and library				10,110	2,250	7,865
Arts, design, entertainment, sports and media				4,955	2,275	2,680
Healthcare practitioners and technicians				10,585	2,620	7,970
Healthcare support				3,795	415	3,380
Protective service				2,980	2,335	650
Food preparation and serving related				10,135	4,205	5,930
Building and grounds cleaning and maintenance				6,000	4,015	1,980
Personal care and service				6,660	1,210	5,450
Sales and related				28,415	15,420	12,995
Office and administrative support				44,560	11,500	33,060
Farming, fishing, and forestry				500	405	95
Construction and excavation				11,190	10,875	320
Installation, maintenance and repairs				7,995	7,640	355
Production				13,320	10,185	3,135
Transportation and material moving				14,655	12,910	1,745
Armed Forces				115	105	10